Acetic Acid → 3-(3'-p-Chlorobenzyl-phenyl)-propionic acid

反応式

C(OCC)(=O)CC(O[CH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[C:9]([C:13](=O)[C:14]2[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=2)[CH:8]=1)=O.S(=O)(=O)(O)O.O.[C:32]([OH:35])(=[O:34])[CH3:33]>>[Cl:20][C:17]1[CH:16]=[CH:15][C:14]([CH2:13][C:9]2[CH:8]=[C:7]([CH2:6][CH2:33][C:32]([OH:35])=[O:34])[CH:12]=[CH:11][CH:10]=2)=[CH:19][CH:18]=1

参加物

反応物 4

HCID 176Acetic Acid

HCID 962Water2 回

HCID 1118Sulfuric Acid

HCID 54279655Ethyl 3-(p-chlorobenzoyl)-benzyl malonate

生成物 1

HCID 214956773-(3'-p-Chlorobenzyl-phenyl)-propionic acid

実験手順

A solution of 15.2 g of ethyl 3-(p-chlorobenzoyl)-benzyl malonate in 50 ml of acetic acid was added to a solution of 50 ml of sulfuric acid and 50 ml of water and the mixture was refluxed under a nitrogen atmosphere for 20 hours and then cooled to room temperature. The mixture was poured into water and then extracted with methylene chloride. The organic phase was extracted with N sodium hydroxide and the alkaline phase was treated with activated carbon, filtered and acidified by addition at 10° C with stirring of 270 ml of N hydrochloric acid. The mixture was vacuulm filtered and the precipitate was washed with water and dried under reduced pressure to obtain 3.11 g of 3-(3'-p-chlorobenzyl-phenyl)-propionic acid which was used as is for the next step.