WO2022166441A1 - 一种2-乙酰基-1,10-菲啰啉的制备方法 - Google Patents
一种2-乙酰基-1,10-菲啰啉的制备方法 Download PDFInfo
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- WO2022166441A1 WO2022166441A1 PCT/CN2021/139664 CN2021139664W WO2022166441A1 WO 2022166441 A1 WO2022166441 A1 WO 2022166441A1 CN 2021139664 W CN2021139664 W CN 2021139664W WO 2022166441 A1 WO2022166441 A1 WO 2022166441A1
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- acetyl
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- phenanthroline
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- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- IWYAYHRXSODVBC-UHFFFAOYSA-N 1-(1,10-phenanthrolin-2-yl)ethanone Chemical compound C1=CN=C2C3=NC(C(=O)C)=CC=C3C=CC2=C1 IWYAYHRXSODVBC-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000003960 organic solvent Substances 0.000 claims abstract description 28
- JJAIRKHLRUPWEQ-UHFFFAOYSA-N 1-(1,2-dihydro-1,10-phenanthrolin-2-yl)ethanone Chemical compound C1=CC2=CC=CN=C2C2=C1C=CC(C(=O)C)N2 JJAIRKHLRUPWEQ-UHFFFAOYSA-N 0.000 claims abstract description 22
- WREVVZMUNPAPOV-UHFFFAOYSA-N 8-aminoquinoline Chemical compound C1=CN=C2C(N)=CC=CC2=C1 WREVVZMUNPAPOV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000007259 addition reaction Methods 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 15
- GBLMMVFQENXAFZ-NSCUHMNNSA-N (e)-4-oxopent-2-enal Chemical compound CC(=O)\C=C\C=O GBLMMVFQENXAFZ-NSCUHMNNSA-N 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 14
- 239000007800 oxidant agent Substances 0.000 claims abstract description 13
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 13
- 239000012298 atmosphere Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 230000001590 oxidative effect Effects 0.000 claims abstract description 6
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N pentanal Chemical compound CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 claims description 40
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 38
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 27
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- KFSLWBXXFJQRDL-UHFFFAOYSA-N peroxyacetic acid Substances CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 17
- 229920000137 polyphosphoric acid Polymers 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 15
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 12
- WQEVDHBJGNOKKO-UHFFFAOYSA-K vanadic acid Chemical compound O[V](O)(O)=O WQEVDHBJGNOKKO-UHFFFAOYSA-K 0.000 claims description 11
- 238000010009 beating Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 150000007522 mineralic acids Chemical class 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- HZNVUJQVZSTENZ-UHFFFAOYSA-N 2,3-dichloro-5,6-dicyano-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(C#N)=C(C#N)C1=O HZNVUJQVZSTENZ-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 150000007524 organic acids Chemical class 0.000 claims description 6
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims description 6
- UGNWTBMOAKPKBL-UHFFFAOYSA-N tetrachloro-1,4-benzoquinone Chemical group ClC1=C(Cl)C(=O)C(Cl)=C(Cl)C1=O UGNWTBMOAKPKBL-UHFFFAOYSA-N 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- DKGAVHZHDRPRBM-UHFFFAOYSA-N tert-butyl alcohol Substances CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- GICPSHAAHUIHRL-UHFFFAOYSA-N CC(C(CC=O)NC1=C2N=CC=CC2=CC=C1)=O Chemical compound CC(C(CC=O)NC1=C2N=CC=CC2=CC=C1)=O GICPSHAAHUIHRL-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 description 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 230000001476 alcoholic effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- LSMQCFPLQFCYAW-UHFFFAOYSA-N 1,10-phenanthroline-2-carbonitrile Chemical compound C1=CN=C2C3=NC(C#N)=CC=C3C=CC2=C1 LSMQCFPLQFCYAW-UHFFFAOYSA-N 0.000 description 1
- ZRJUDAZGVGIDLP-UHFFFAOYSA-N 2-bromo-1,10-phenanthroline Chemical compound C1=CN=C2C3=NC(Br)=CC=C3C=CC2=C1 ZRJUDAZGVGIDLP-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- LEIMLDGFXIOXMT-UHFFFAOYSA-N trimethylsilyl cyanide Chemical compound C[Si](C)(C)C#N LEIMLDGFXIOXMT-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
Definitions
- the invention relates to the technical field of organic synthesis, in particular to a preparation method of 2-acetyl-1,10-phenanthroline.
- 2-acetyl-1,10-phenanthroline is mainly used in optoelectronic materials, which mainly uses 2-bromophenanthroline to extract bromine through butyllithium at -78 °C, and then react with N,N- Prepared by dimethylacetamide reaction.
- the raw materials of the above preparation method are expensive, the synthesis conditions are too harsh, and the industrialization advantage is not large.
- the object of the present invention is to provide a preparation method of 2-acetyl-1,10-phenanthroline.
- the preparation method has simple synthetic route, easy industrial production, and green and friendly raw materials.
- the invention provides a kind of preparation method of 2-acetyl-1,10-phenanthroline, comprising the following steps:
- the 2-acetyl-1,2-dihydrophenanthroline, the oxidizing agent and the second organic solvent are mixed to undergo an oxidation reaction to obtain the 2-acetyl-1,10-phenanthroline.
- the molar ratio of the 8-aminoquinoline to 3-acetylacrolein is 1:(0.9-3.0).
- the acid includes an organic acid or an inorganic acid
- the mass ratio of the acid to the 8-aminoquinoline is 100:(60-145).
- the organic acid includes one or more of acetic acid, polyphosphoric acid, phosphorus oxychloride, trifluoroacetic acid and trifluoromethanesulfonic acid;
- the inorganic acid includes one or more of hydrochloric acid, sulfuric acid and vanadic acid.
- the temperature of the addition reaction is 50-65° C., and the time is 15-25 h.
- the catalyst is one or more of polyphosphoric acid, vanadic acid, concentrated hydrochloric acid, sulfuric acid, trifluoromethanesulfonic acid and trifluoroacetic acid;
- the mass concentration of the concentrated hydrochloric acid is 30-36%.
- the mass ratio of the 4-oxo-3-(quinoline-8-amino)pentanal to the catalyst is 1:(0.1-10).
- the temperature of the cyclization reaction is 77-82° C., and the time is 15-25 h.
- the oxidant is tetrachlorobenzoquinone, dichlorodicyanobenzoquinone, potassium permanganate, hydrogen peroxide, tert-butanol peroxy or peracetic acid.
- the mass ratio of the 2-acetyl-1,2-dihydrophenanthroline to the oxidizing agent is (70-120): (35-200).
- the temperature of the oxidation reaction is room temperature, and the time is 5-10 h.
- the steps of solid precipitation, first filtration, pulping, second filtration, rinsing and drying are performed in sequence.
- the precipitation of solid is to add water or saturated aqueous sodium bicarbonate solution to the product system obtained after the oxidation reaction is completed to precipitate the solid;
- the volume ratio of the water or saturated aqueous sodium bicarbonate solution to the second organic solvent is 30:13 or 30:15.
- the beating is mixing the filter cake obtained by the first filtration with toluene and beating at a temperature of 70° C. for 30 minutes.
- the invention provides a preparation method of 2-acetyl-1,10-phenanthroline, comprising the following steps: in a protective atmosphere, mixing 8-aminoquinoline, 3-acetyl acrolein, an acid and a solvent, Addition reaction is carried out to obtain 4-oxo-3-(quinoline-8-amino)pentanal; the 4-oxo-3-(quinoline-8-amino)pentanal, the catalyst and the first organic
- the solvent is mixed, and a cyclization reaction is carried out to obtain 2-acetyl-1,2-dihydrophenanthroline; the 2-acetyl-1,2-dihydrophenanthroline, the oxidant and the second organic solvent are mixed, An oxidation reaction occurs to give the 2-acetyl-1,10-phenanthroline.
- the preparation method has simple synthetic route, mild reaction conditions, easy industrial production, and green and friendly preparation raw materials.
- Fig. 1 is the nuclear magnetic spectrum of 2-acetyl-1,10-phenanthroline prepared in Example 1.
- the invention provides a kind of preparation method of 2-acetyl-1,10-phenanthroline, comprising the following steps:
- the 2-acetyl-1,2-dihydrophenanthroline, the oxidizing agent and the second organic solvent are mixed to undergo an oxidation reaction to obtain the 2-acetyl-1,10-phenanthroline.
- the preparation process of the 2-acetyl-1,10-phenanthroline is preferably as shown in formula I:
- the present invention 8-aminoquinoline, 3-acetylacrolein, acid and solvent are mixed in a protective atmosphere, and an addition reaction is carried out to obtain 4-oxo-3-(quinoline-8-amino)pentanal.
- the present invention does not have any special limitation on the protective atmosphere, and a non-oxygen atmosphere well-known to those skilled in the art can be used.
- the protective atmosphere is specifically a nitrogen atmosphere.
- the structural formula of the 8-aminoquinoline is The 8-aminoquinoline is preferably a commercially available product; the structural formula of the 3-acetyl acrolein is The structural formula of described 4-oxo-3-(quinoline-8-amino) pentanal is
- the acid preferably includes an organic acid or an inorganic acid; the inorganic acid preferably includes one or more of hydrochloric acid, sulfuric acid and vanadic acid; in the present invention, when the inorganic acid includes hydrochloric acid, The hydrochloric acid is preferably mixed in the form of a solution, and the mass concentration of the hydrochloric acid is preferably 30-36%; when the inorganic acid includes sulfuric acid and/or vanadic acid, both the sulfuric acid and vanadic acid are preferably sulfuric acid or vanadium. Pure acid.
- the organic acid preferably includes one or more of acetic acid, polyphosphoric acid, phosphorus oxychloride, trifluoroacetic acid and trifluoromethanesulfonic acid. The acid acts as a catalyst to promote the addition reaction.
- the solvent includes water and alcohol-based organic solvent; the alcohol-based organic solvent is more preferably methanol.
- the present invention does not have any special limitation on the ratio of the water and the alcoholic organic solvent, and can be mixed according to any ratio.
- the alcoholic organic solvent is methanol, and the volume ratio of the water to the alcoholic organic solvent is 3:4 and 1:2.
- the use of a mixed solvent including water and an alcoholic organic solvent can prevent the polymerization of 3-acetyl acrolein and the uniformity of the system, and further improve the product yield.
- the molar ratio of the 8-aminoquinoline and 3-acetylacrolein is preferably 1:(0.9-3.0), more preferably 1:(1.5-2.5); the acid and the 8
- the mass ratio of -aminoquinoline is preferably 100:(60-145), more preferably 100:(70-75).
- the mass ratio of the 8-aminoquinoline to the solvent is preferably 1 g: (3-20) mL, more preferably 1 g: (4-7) mL.
- the present invention does not have any special limitation on the mixing, and it can be carried out by a process well known to those skilled in the art.
- the temperature of the addition reaction is preferably 50-65°C, more preferably 55-60°C; the time is preferably 15-25h, more preferably 18-23h.
- the present invention also preferably includes filtration; the present invention does not have any special limitation on the filtration, and can be performed by a process well known to those skilled in the art.
- the present invention mixes the 4-oxo-3-(quinoline-8-amino)pentanal, the catalyst and the first organic solvent , cyclization reaction was carried out to obtain 2-acetyl-1,2-dihydrophenanthroline.
- the catalyst is preferably one or more of polyphosphoric acid, vanadic acid, concentrated hydrochloric acid, sulfuric acid, trifluoromethanesulfonic acid and trifluoroacetic acid, and the mass concentration of the concentrated hydrochloric acid is preferably 30 ⁇ 36%; when the catalysts are two or more of the above specific options, the present invention does not have any special restrictions on the proportion of the above specific substances, and the mixture can be carried out according to any proportion.
- the catalyst is polyphosphoric acid and vanadic acid; the mass ratio of the polyphosphoric acid and vanadic acid is specifically 45:1.
- the first organic solvent is preferably one or more of ethyl acetate, methyl tert-butyl ether, toluene, chlorinated alkanes and polyphosphoric acid; when the first organic solvent is the above
- the present invention does not have any special limitation on the mixing ratio of the above-mentioned specific substances, and the mixture can be carried out according to any mixing ratio.
- the first organic solvent is ethyl acetate.
- the mass ratio of the 4-oxo-3-(quinoline-8-amino)pentanal to the catalyst is preferably 1:(0.1-10), more preferably 1:(0.3-1).
- the mass ratio of the 4-oxo-3-(quinoline-8-amino)pentanal to the volume of the first organic solvent is preferably 1 g: (3-20) mL, more preferably 1 g: (3 to 5) mL.
- the present invention does not have any special limitation on the mixing, and it can be carried out by a process well known to those skilled in the art.
- the temperature of the cyclization reaction is preferably 77-82°C, more preferably 80°C; the time is preferably 15-25h, more preferably 18-22h.
- the cyclization reaction is preferably carried out under reflux conditions.
- the present invention also preferably includes the process of successively recovering the solvent and using acetic acid jacket to steam; the method of recovering the solvent is preferably reduced pressure distillation; the process of using the acetic acid jacket to steam is preferably reduced pressure. Distilled.
- the catalyst includes polyphosphoric acid or the first organic solvent includes polyphosphoric acid
- the definition of can use the type well-known to those skilled in the art.
- the present invention mixes the 2-acetyl-1,2-dihydrophenanthroline, an oxidizing agent and a second organic solvent, and an oxidation reaction occurs to obtain The 2-acetyl-1,10-phenanthroline.
- the oxidant is preferably tetrachlorobenzoquinone, dichlorodicyanobenzoquinone, potassium permanganate, hydrogen peroxide, tert-butanol peroxy or peracetic acid, more preferably tetrachlorobenzoquinone or peroxygen Acetic acid; when the catalyst is peracetic acid, the peracetic acid is preferably added in the form of a solution; the mass concentration of the peracetic acid is preferably 35%.
- the second organic solvent is preferably acetic acid, dichloromethane, chloroform, dichloroethane, toluene or an ether solvent, more preferably acetic acid.
- the mass ratio of the 2-acetyl-1,2-dihydrophenanthroline to the oxidizing agent is preferably (70-120):(35-200), more preferably (100-110):( 38-180), most preferably 109:175 or 75:38.5.
- the mass ratio of the 2-acetyl-1,2-dihydrophenanthroline to the second organic solvent is preferably 1 g: (3-15) mL, more preferably 1 g: ( 4 to 7) mL, most preferably 1 g: 5.96 mL.
- the present invention does not have any special limitation on the mixing, and it can be carried out by a process well known to those skilled in the art.
- the mixing is to dissolve the 2-acetyl-1,2-dihydrophenanthroline in the second organic solvent and then add an oxidant.
- the temperature of the oxidation reaction is preferably room temperature, and the time is preferably 5-10 hours, more preferably 6-8 hours.
- the oxidation reaction is preferably carried out under stirring conditions, and the present invention does not have any special limitation on the rotational speed of the stirring, and the rotational speed well known to those skilled in the art can be used.
- the present invention also preferably includes the successive steps of precipitating solids, first filtration, beating, second filtration, rinsing and drying; Water or saturated aqueous sodium bicarbonate solution is added to the obtained product system to precipitate solids.
- the volume ratio of the water or saturated aqueous sodium bicarbonate solution to the second organic solvent is preferably 30:13 or 30:15.
- the beating is preferably made by mixing the filter cake obtained by the first filtration with toluene and beating at a temperature of 70° C.
- the rinsing agent used in the rinsing is preferably isopropyl ether; the drying is preferably drying; the present invention does not have any special limitation on the drying, and can be performed by a process well known to those skilled in the art.
- the 2-acetyl-1,2-dihydrophenanthroline was dissolved in 750 mL of toluene, 110 g of peracetic acid with a mass concentration of 35% was added dropwise, stirred at room temperature for 6 hours, added to 1500 mL of water, stirred, and allowed to stand for fractionation. layer, the toluene layer was washed with water, then the temperature was raised to 70°C for beating for 30min, cooled to 5°C, filtered, rinsed and dried with isopropyl ether to obtain 61g of 2-acetyl-1,10-phenanthroline with a purity of 98.1%;
- the 2-acetyl-1,10-phenanthroline was subjected to a nuclear magnetic test, and the test results were similar to those of Example 1.
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Abstract
Description
Claims (14)
- 一种2-乙酰基-1,10-菲啰啉的制备方法,其特征在于,包括以下步骤:在保护气氛中,将8-氨基喹啉、3-乙酰基丙烯醛、酸和溶剂混合,进行加成反应,得到4-氧代-3-(喹啉-8-氨基)戊醛;将所述4-氧代-3-(喹啉-8-氨基)戊醛、催化剂和第一有机溶剂混合,进行环合反应,得到2-乙酰基-1,2-二氢菲啰啉;将所述2-乙酰基-1,2-二氢菲啰啉、氧化剂和第二有机溶剂混合,发生氧化反应,得到所述2-乙酰基-1,10-菲啰啉。
- 如权利要求1所述的制备方法,其特征在于,所述8-氨基喹啉和3-乙酰基丙烯醛的摩尔比为1:(0.9~3.0)。
- 如权利要求1所述的制备方法,其特征在于,所述酸包括有机酸或无机酸;所述酸与所述8-氨基喹啉的质量比为100:(60~145)。
- 如权利要求3所述的制备方法,其特征在于,所述有机酸包括醋酸、多聚磷酸、三氯氧磷、三氟乙酸和三氟甲磺酸中的一种或几种;所述无机酸包括盐酸、硫酸和矾酸中的一种或几种。
- 如权利要求1~4任一项所述的制备方法,其特征在于,所述加成反应的温度为50~65℃,时间为15~25h。
- 如权利要求1所述的制备方法,其特征在于,所述催化剂为多聚磷酸、钒酸、浓盐酸、硫酸、三氟甲磺酸和三氟乙酸中的一种或几种;所述浓盐酸的质量浓度为30~36%。
- 如权利要求1或6所述的制备方法,其特征在于,所述4-氧代-3-(喹啉-8-氨基)戊醛和催化剂的质量比为1:(0.1~10)。
- 如权利要求7所述的制备方法,其特征在于,所述环合反应的温度为77~82℃,时间为15~25h。
- 如权利要求1所述的制备方法,其特征在于,所述氧化剂为四氯苯醌、二氯二氰基苯醌、高锰酸钾、双氧水、过氧叔丁醇或过氧乙酸。
- 如权利要求1或9所述的制备方法,其特征在于,所述2-乙酰基-1,2-二氢菲啰啉和氧化剂的质量比为(70~120):(35~200)。
- 如权利要求10所述的制备方法,其特征在于,所述氧化反应的温度为室温,时间为5~10h。
- 如权利要求1所述的制备方法,其特征在于,所述氧化反应完成后,还包括依次进行的析出固体、第一过滤、打浆、第二过滤、淋洗和干燥。
- 如权利要求12所述的制备方法,其特征在于,所述析出固体为在所述氧化反应完成后得到的产物体系中加入水或饱和碳酸氢钠水溶液使固体析出;所述水或饱和碳酸氢钠水溶液与第二有机溶剂的体积比为30:13或30:15。
- 如权利要求12所述的制备方法,其特征在于,所述打浆为将所述第一过滤得到的滤饼与甲苯混合在70℃的温度下打浆30min。
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