CN1803760A - N-arylation process with hydrazone as ligand in aqueous phase system - Google Patents

N-arylation process with hydrazone as ligand in aqueous phase system Download PDF

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CN1803760A
CN1803760A CN 200610033067 CN200610033067A CN1803760A CN 1803760 A CN1803760 A CN 1803760A CN 200610033067 CN200610033067 CN 200610033067 CN 200610033067 A CN200610033067 A CN 200610033067A CN 1803760 A CN1803760 A CN 1803760A
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reaction
acylhydrazone
aqueous phase
phase system
arylation
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CN100336794C (en
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万一千
朱新海
马彦
陈功
宋化灿
苏丽
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Sun Yat Sen University
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Abstract

The provided N-arylation method in water phase system for C-N coupling reaction comprises: using aryl halide and amine or nitrogen-contained heteroaromatic compound as material and water as solvent, heating traditionally or with microwave; using the carbonate, fluoride, phosphate and hydrate of alkali metal or alkali earth metal as base; with transient metal catalysis, adding surfactant to promote the C-N coupling reaction with acylated hydrazone compound as ligand. This invention just needs mild reaction condition, and has wide application.

Description

It with the acylhydrazone N-arylation method in the aqueous phase system of part
Technical field
The present invention relates to chemical field, especially a kind of method of N-arylation reaction.
Technical background
Arylamines is the important compound of a class, extensively is present in to have in the natural of physiologically active and the non-natural product, and the research that the C-N key is formed reaction causes that people pay attention to widely.
The Ullmann reaction of carbon-nitrogen cross-coupling was from existing so far history (Ley, the S.V. for a long time of reported first in 1903; Thomas, A.W.Angew.Chem.Int.Ed.2003,42,5400 reach relevant quoted passage).Because this reaction is normally in high boiling polar solvent, carry out under at the copper powder of high temperature, catalytic amount or equivalent as the condition of catalyzer, thereby there is long reaction time, the subsequent disposal difficulty of reaction, the not high drawback of reaction product complexity and reaction yield.Nineteen eighty-three, people such as Migita have found that the earliest the catalytic C-N key of Pd forms reaction (Kosugi, M.; Kameyama, M.; Migita, T.Chem.Lett.1983,927), 1994, Buchwald and Hartwig developed the catalytic C-N key of Pd simultaneously independently and have formed reaction ((a) Guram, A.S.; Buchwald, S.L.J.Am.Chem.Soc.1994,116,7901; (b) Paul, F.; Patt, J.; Hartwig, J.E.J.Am.Chem.Soc.1994,116,5969).Adopt the catalytic C-N key of Pd to form the more traditional Ullmann reaction of reaction and have condition gentleness relatively, reacting phase is to advantage such as simple, need to use high boiling organic solvent but also exist, toxicity is bigger, the price height, and to the shortcomings such as dependency of unstable and hypertoxic organophosphorus ligand, therefore, in recent years, the catalytic Ullmann of Cu reacts the very big development of having got back.People's such as Buckwald patent PCT/US02/12785 (WO02/085838) and Ley, S.V. and; Thomas, the summary of A.W. (Ley, S.V.; Thomas, A.W.Angew.Chem.Int.Ed.2003,42,5400) in introduced the formation method of the C-N key under the copper katalysis.By adding suitable part, use the Cu salt of catalytic amount, the Ullmann reaction can be carried out under comparatively gentle condition.Yet, no matter adopt which kind of metal catalyst, the N-arylation reaction of being reported in these documents is normally carried out in organic solvent.On the other hand, reaction takes the long application that has also seriously hindered high-throughput bioactivity screening in present medicine and the agricultural chemicals R﹠D process.Therefore, the objective requirement that to invent a kind of quick, eco-friendly reaction process be current such reaction will have good application prospects.
People such as Pell ó n have reported the catalytic C-N linked reaction of copper in the aqueous solution ((a) Pell ó n, R.F.; Carrasco, R.; Rod é s, L.Synth.Comm.1993,23 (10), 1447; (b) Pell ó n, R.F.; Est é vez-Braun, A.; Docampo, M.L.; Mart í n, A.; Ravelo, A.G.Synlett 2005, (10), 1606), have the aryl halides of carboxyl and the reaction of amine but only be confined to the ortho position.People such as Twieg reported cuprous iodide catalytic be synthetic method (Lu, the Z. of arylamines in the aqueous solution of part with the 2-dimethylaminoethanol; Twieg, R.J.Tetrahedron Lett.2005,46,2997), but only be confined to aromatic halogenate and amino acid or with certain water miscible short-chain fat amine is arranged and has the reaction of the aliphatic amide of hydroxyl.Reported the linked reaction of aromatic halogenate and ammoniacal liquor or short-chain alkyl amine in the catalytic aqueous solution of copper sulfate in the European patent EP 0549263.But above-mentioned reaction all can only be carried out at specific compound, thereby can not promote the use of.And people such as Buchwald have reported formation reaction (Huang, the X. of C-N key in the catalytic aqueous solution of Pd; Anderson, K.W.; Zim, D.; Jiang, L.; Klapars, A.; Buchwald, S.L.J.Am.Chem.Soc.2003,125,6653) there is defective because of the cost of its catalyst system.
The present invention is under Guangdong Province's natural science fund assistance, and the research that provides a kind of quick, eco-friendly N-arylation method to carry out is provided.
Summary of the invention
The objective of the invention is to overcome the shortcoming that exists in the prior art C-N linked reaction method, provide a kind of easy, quick, reaction conditions is gentle, the N-arylation method of wide application range of substrates, environmental friendliness, process economy.
The present invention is the formation method of C-N key in a kind of aqueous solution.It is characterized in that with aryl halides and amine or nitrogen heterocyclic ring aromatic compound be raw material, with water as solvent, adopt and reflux or the microwave-assisted heating, carbonate, fluorochemical, phosphoric acid salt and oxyhydroxide with basic metal or alkaline-earth metal are alkali, by adding tensio-active agent, under transition metal-catalyzed condition, use the C-N linked reaction of acylhydrazone compounds as part.
Involved reaction can adopt following reaction formula to represent among the present invention:
Wherein X-can be a bromine or iodine.
R represents 2-on the halo aromatic ring, 3-, and the substituting group of 4-position, or represent two on the aromatic ring to replace or multi-substituent, and can be H ,-NO 2,-CN ,-COOH ,-COOR, ethanoyl, alkyl, alkoxyl group, aryl, halogen, trifluoromethyl etc. but not only be confined to these substituting groups.
R 1R 2NH contains straight or branched alkyl, C 5-C 7Cycloalkyl, benzyl, (substituting group is an alkyl to substituted benzyl, alkoxyl group etc.) etc. Armeen, secondary amine, or five to the heptatomic cyclic secondary amine, or contains the primary amine of aromatic substituent (aromatic substituent is benzene or has alkyl, substituent benzene such as alkoxyl group).
R 1R 2NH contains NH to arrive seven membered heterocyclic class aromatic compound at intra-annular five, as imidazoles, pyrroles, pyrazoles etc.
Concrete reaction process of the present invention is: catalyzer, part, aryl halides, amine, alkali, tensio-active agent and water are added in microwave reaction pipe or the round-bottomed flask successively, and the mode that adopts microwave-assisted heating or common heating bath to reflux stirs reacting by heating down; After reaction finished, separating reaction mixed solution and purifying obtained N-arylation product.
Described separating reaction mixed solution and purifying can be used ethyl acetate extraction, washing, and the saturated common salt washing, anhydrous magnesium sulfate drying filters, precipitation, reaction mixture is purified through the silicagel column column chromatography for separation, gets N-arylation product.
Below the inventive method is further described:
(1) is reaction solvent with water, has good environmental compatibility;
(2) the reaction heating can be adopted the mode that microwave-assisted heating or common heating bath reflux.During the microwave-assisted heating, temperature of reaction is 60-180 ℃, is preferably 80-150 ℃, and the reaction times is 1-30min, is preferably 2-10min; Or adopt common heating bath, and temperature of reaction is 50-100 ℃, is preferably 60-100 ℃, the reaction times is 0.5-24h, is preferably 2-12h;
(3) reactant aryl halides can be that replace or non-replacement, and reactant amine can be primary amine or secondary amine, can be aromatic amine, aliphatic amide or nitrogen-containing heterocycle compound; The mol ratio of aryl halides and amine is preferably 1: 1 to 1: 4;
(4) employed part is the acylhydrazone compounds, can be single acylhydrazone or two acylhydrazone compounds, as oxalyl dihydrazone, benzoyl hydrazone, phenylacetyl hydrazone, naphthalene acetyl hydrazone etc.; The mol ratio of used part and catalyzer is preferably 1: 2 to 2: 1;
(5) can use the salt of copper, cobalt, iron, zinc, manganese and title complex to make catalyzer, the mol ratio of catalyzer and substrate aryl halides is preferably 1: 20 to 1: 1;
(6) used alkali can be carbonate, phosphoric acid salt, fluorochemical, borate and the oxyhydroxide of basic metal or alkaline-earth metal or the compound that can be converted into respective compound in water; The mol ratio of alkali and substrate aryl halides is preferably 1: 1 to 3: 1;
(7) employed tensio-active agent can be quaternary ammonium salts, dodecane sulfonate class, PEG class but not only be confined to these tensio-active agents; The mol ratio of tensio-active agent and substrate aryl halides is preferably 1: 20 to 1: 1.
That carbon provided by the invention-nitrogen coupling reaction method has is simple to operate, the reaction times is short, temperature is low, product simply is easy to separate and characteristics such as environmental friendliness.Especially with water as reaction solvent, adopt the type of heating of microwave-assisted, with the reacting phase ratio of reporting in the document of the same type, effectively shorten the reaction times, improved the environment friendly that reacts, conform to the requirement of Green Chemistry development more, may have broad application prospects aspect preparing at the high-throughput of natural product, medicine and agricultural chemicals.
Embodiment
Below in conjunction with embodiment content of the present invention is described further.
Synthesizing of embodiment 1:N-phenylbenzylamine
With 8mg (0.1mmol) CuO, 55mg (0.2mmol) bisoxalydihydrazone, 102mg (0.5mmol) iodobenzene, 160mg (1.5mmol) benzylamine, 56mg (1.0mmol) KOH, 8.1mg (0.025mmol) TBAB, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 2min under 130 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (50: 1)] through the silicagel column column chromatography for separation, get N-phenylbenzylamine 82mg, yield 90%.
MS (the ESI source, m/z): 184 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 7.32 (dd, J=7.2,6.6Hz, 4H), 7.24-7.26 (m, 1H), 7.15 (t, J=7.8,2H), 6.69 (t, J=7.2Hz, 1H), 6.61 (d, J=7.8,2H), 4.31 (s, 2H), 3.97 (brs, 1H).
Synthesizing of embodiment 2:N-p-nitrophenyl benzylamine
Figure A20061003306700071
With 37mg (0.25mmol) FeSO 4, 70mg (0.25mmol) bisoxalydihydrazone, 102mg (0.5mmol) be to the nitro bromobenzene, 54mg (0.5mmol) benzylamine, 228mg (1.5mmol) CsF, 68mg (0.25mmol) SDS-Na, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 10min under 80 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (5: 1)] through the silicagel column column chromatography for separation, get N-p-nitrophenyl benzylamine 51mg, yield 45%.
MS (the ESI source, m/z): 229 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 8.07 (d, J=9Hz, 2H), 7.31-7.39 (m, 5H), 6.56 (d, J=9Hz, 2H), 4.85 (brs, 1H), 4.42 (s, 2H).
Synthesizing of embodiment 3:N-p-methoxyphenyl benzylamine
With 13mg (0.05mmol) CuSO 4.5H 2O, 20mg (0.1mmol) diacetone base oxalyl dihydrazone, 94mg (0.5mmol) be to the methoxyl group bromobenzene, 214mg (2.0mmol) benzylamine, 69mg (0.5mmol) K 2CO 3, 161mg (0.5mmol) TBAB, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 5min under 130 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (30: 1)] through the silicagel column column chromatography for separation, get N-p-methoxyphenyl benzylamine 98mg, yield 92%.
MS (the ESI source, m/z): 214 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 7.27-7.37 (m, 5H), 6.74-6.78 (m, 2H), 6.60-6.64 (m, 2H), 4.28 (s, 2H), 3.73 (s, 3H).
Synthesizing of embodiment 4:N-p-methylphenyl benzylamine
With 38mg (0.2mmol) CuI, 111mg (0.4mmol) bisoxalydihydrazone, 171mg (1.0mmol) be to the methyl bromobenzene, 321mg (3.0mmol) benzylamine, 168mg (3.0mmol) KOH, 32.2mg (0.1mmol) TBAB, 10ml H 2O adds in the 50ml round-bottomed flask, reflux 10h.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (50: 1)] through the silicagel column column chromatography for separation, get N-p-methylphenyl benzylamine 162mg, yield 82%.
MS (the ESI source, m/z): 198 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 7.24-7.36 (m, 5H), 6.96 (d, J=7.8Hz, 2H), 6.54 (d, J=8.1Hz, 2H), 4.29 (s, 2H), 3.88 (brs, 1H), 2.22 (s, 3H).
Embodiment 5:N, N-diphenylamine synthetic
Figure A20061003306700082
With 16mg (0.2mmol) CuO, 50mg (0.2mmol) dicyclo pentanone oxalyl dihydrazone, 78mg (0.5mmol) bromobenzene, 214mg (2.0mmol) benzylamine, 212mg (1.0mmol) K 3PO 4, 161mg (0.5mmol) TBAB, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 5min under 150 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter, the filtrate decompression distillation is through silicagel column column chromatography for separation purification [eluent: petrol ether/ethyl acetate (30: 1)], get N, N-diphenylamine 6l mg, yield 72%.
MS (the ESI source, m/z): 170 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 7.30-7.25 (m, 4H), 7.09 (d, J=7.6Hz, 4H), 6.94 (t, J=7.3Hz, 2H), 5.98 (s, 1H).
Synthesizing of embodiment 6:N-p-methoxyphenyl piperidines
Figure A20061003306700083
With 40mg (0.5mmol) CuO, 70mg (0.25mmol) bisoxalydihydrazone, 94mg (0.5mmol) be to the methoxyl group bromobenzene, 85mg (1.0mmol) piperidines, 40mg (1.0mmol) NaOH, 81mg (0.25mmol) TBAB, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 5min under 120 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (20: 1)] through the silicagel column column chromatography for separation, get N-p-methoxyphenyl piperidines 74mg, yield 77%.
MS (the ESI source, m/z): 192 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 6.91-6.87 (m, 2H), 6.83-6.79 (m, 2H), 3.75 (s, 3H), 3.01 (t, J=5.4Hz, 4H), 1.75-1.68 (m, 4H), 1.57-1.50 (m, 2H).
Synthesizing of embodiment 7:N-p-methoxyphenyl-N-n-propyl amine
Figure A20061003306700091
With 14mg (0.1mmol) Cu 2O, 46mg (0.2mmol) pimelinketone phenylacetyl hydrazone, 187mg (1.0mmol) be to the methoxyl group bromobenzene, 236mg (4.0mmol) Tri N-Propyl Amine, 112mg (2.0mmol) KOH, 322mg (1.0mmol) TBAB, 10ml H 2O adds in the 50ml round-bottomed flask, reflux 6h.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (30: 1)] through the silicagel column column chromatography for separation, get N-p-methoxyphenyl-N-n-propyl amine 83mg, yield 50%.
MS (the ESI source, m/z): 166 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 6.74 (d, J=8.7Hz, 2H) 6.55 (d, J=8.7Hz, 2H), 3.73 (s, 3H), 3.02 (t, J=7.1Hz, 2H), 1.66-1.58 (m, 2H), 0.99 (t, J=7.4Hz, 3H).
Synthesizing of embodiment 8:N-p-methoxyphenyl imidazoles
Figure A20061003306700092
With 27mg (0.2mmol) CuCl 2, 28mg (0.1mmol) bisoxalydihydrazone, 94mg (0.5mmol) be to the methoxyl group bromobenzene, 136mg (2.0mmol) imidazoles, 326mg (1.0mmol) Cs 2CO 3, 161mg (0.5mmol) TBAB, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 10min under 150 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (10: 1)] through the silicagel column column chromatography for separation, get N-p-methoxyphenyl imidazoles 55mg, yield 63%.
MS (the ESI source, m/z): 175 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 7.78 (s, 1H), 7.31 (d, J=8.0Hz, 2H), 7.20 (d, J=8.0Hz, 2H), 7.00 (s, 1H), 6.98 (s, 1H), 3.85 (s, 3H).
Synthesizing of embodiment 9:N-p-methoxyphenyl benzylamine
Figure A20061003306700101
With 13mg (0.05mmol) CuSO 4.5H 2O, 20mg (0.1mmol) dicyclohexyl oxalyl dihydrazone, 94mg (0.5mmol) be to the methoxyl group bromobenzene, 214mg (2.0mmol) benzylamine, 69mg (0.5mmol) K 2CO 3, 161mg (0.5mmol) TBAB, 1.5ml H 2O adds in the 8ml microwave reaction pipe, and 100W reacts 5min under 60 ℃ of conditions.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (30: 1)] through the silicagel column column chromatography for separation, get N-p-methoxyphenyl benzylamine 66mg, yield 62%.
Embodiment 10:N-is synthetic to the acetyl phenylbenzylamine
Figure A20061003306700102
With 2mg (0.025mmol) CuO, 14mg (0.05mmol) bisoxalydihydrazone, 100mg (0.5mmol) be to the ethanoyl bromobenzene, 160mg (1.5mmol) benzylamine, 56mg (1.0mmol) KOH, 8.1mg (0.025mmol) TBAB, 10ml H 2O adds in the 50ml round-bottomed flask, is heated to 50 ℃ of reaction 2h.After reaction stops, using ethyl acetate extraction, washing, saturated common salt washing, behind the anhydrous magnesium sulfate drying, filter the filtrate decompression distillation, purify by [eluent: petrol ether/ethyl acetate (5: 1)] through the silicagel column column chromatography for separation, get N-acetyl phenylbenzylamine 34mg, yield 30%.
MS (the ESI source, m/z): 226 (M ++ 1); 1H NMR (CDCl 3, 300MHz) δ 7.82 (d, J=8.7Hz, 2H), 7.39-7.29 (m, 5H), 6.60 (, J=8.7Hz, 2H), 4.41 (s, 2H), 2.51 (s, 3H).

Claims (10)

1. one kind is the N-arylation method in the aqueous phase system of part with the acylhydrazone, may further comprise the steps:
1) with water as solvent, aryl halides, aminated compounds, catalyzer, part, alkali, tensio-active agent are added in the reaction vessel, stir reacting by heating down, reaction expression is as follows:
Wherein X-is a bromine or iodine;
R on the aryl halides represents 2-on the halo aromatic ring, 3-, and the substituting group of 4-position, or represent two on the aromatic ring to replace or multi-substituent;
R 1R 2NH is one of following: contain the straight or branched alkyl, the cycloalkyl of C5-C7, benzyl, Armeen, the secondary amine of substituted benzyl (substituting group is an alkyl, alkoxyl group etc.) etc.; Or five to the heptatomic cyclic secondary amine; Or contain the primary amine of aromatic substituent (aromatic substituent is benzene or has alkyl, substituent benzene such as alkoxyl group); Or contain NH at intra-annular five to seven membered heterocyclic class aromatic compound;
Described part is the acylhydrazone compounds;
Described catalyzer is metal-salt and compound thereof.
2) after reaction finished, separating reaction mixed solution and purifying obtained N-arylation product.
2. as claimed in claim 1 is N-arylation method in the aqueous phase system of part with the acylhydrazone, and it is characterized in that: described step 1) adopts the microwave-assisted heating, and temperature of reaction is 60-180 ℃, and the reaction times is 1-30min.
3. as claimed in claim 1 is N-arylation method in the aqueous phase system of part with the acylhydrazone, and it is characterized in that: described step 1) adopts common heating bath, and temperature of reaction is 50-100 ℃, and the reaction times is 0.5-24h.
4. as claimed in claim 1 is N-arylation method in the aqueous phase system of part with the acylhydrazone, and it is characterized in that: the mol ratio of described aryl halides and aminated compounds is 1: 1 to 1: 4.
5. the N-arylation method in the aqueous phase system as claimed in claim 1 is characterized in that: described catalyzer is one of following: the salt of copper, cobalt, iron, zinc, manganese and title complex.
As claim 1 or 5 described be N-arylation method in the aqueous phase system of part with the acylhydrazone, it is characterized in that: the mol ratio of described catalyzer and aryl halides is 1: 20 to 1: 1.
7. in the aqueous phase system as claimed in claim 1 is the N-arylation method of part with the acylhydrazone, it is characterized in that: described part is single acylhydrazone or acyl two hydrazone compounds, comprises oxalyl dihydrazone, benzoyl hydrazone, phenylacetyl hydrazone, naphthalene acetyl hydrazone.
As claim 1 or 6 or 7 described be N-arylation method in the aqueous phase system of part with the acylhydrazone, it is characterized in that: the mole of described part and catalyzer is 1: 2 to 2: 1.
9. as claimed in claim 1 is N-arylation method in the aqueous phase system of part with the acylhydrazone, and it is characterized in that: the mol ratio of described alkali and aryl halides is 1: 1 to 3: 1.
10. as claimed in claim 1 is N-arylation method in the aqueous phase system of part with the acylhydrazone, and it is characterized in that: the mol ratio of described tensio-active agent and aryl halides is 1: 20 to 1: 1.
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CN105949075A (en) * 2016-06-24 2016-09-21 江苏倍合德化工有限公司 Synthesis method of mefenamic acid
CN111848441A (en) * 2020-07-28 2020-10-30 朱翠萍 N-substituted benzoyl hydrazone compound and preparation method and application thereof
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CN115872894A (en) * 2022-11-15 2023-03-31 上海慧聚药业有限公司 Synthesis of non-ionic contrast agents

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