Reaction of α,β-Unsaturated Carboxylic Acids with Manganese(III) Acetate in the Presence of Chloride Ion
作者:Hiroshi Yonemura、Hiroshi Nishino、Kazu Kurosawa
DOI:10.1246/bcsj.59.3153
日期:1986.10
2-diphenylethanal. Fluorenylideneacetic acid gave 9-chloro-9-(dichloromethyl)fluorene, 9-acetoxy-9-(dichloromethyl)fluorene, and 9-fluorenone. 1-Cyclohexenecarboxylic acid yielded 1,2-dichlorocyclohexanecarboxylic acid and 1-acetoxy-2-chlorocyclohexanecarboxylic acid. The reaction can be explained in terms of a free-radical mechanism involving manganese(III) acetate–Cl− complexation, addition of Cl−
3-苯基丙烯酸与乙酸锰 (III)-Cl− 络合物反应生成 1,2,2-三氯-1-苯基乙烷、1-乙酰氧基-2,2-二氯-1-苯基乙烷和 2,2-二氯-1-苯基乙醇。(E)-2,3-二苯基丙烯酸得到2,2-二氯-1,2-二苯基乙酮和2-乙酰氧基-1,2-二苯基乙酮。3,3-二苯基丙烯酸生成 2,2-二氯-1,1-二苯基乙烯、1-乙酰氧基-2,2-二氯-1,1-二苯基乙烷、2,2-二氯-1,1-二苯基-1-乙醇和 2-羟基-2,2-二苯乙醛。芴基乙酸得到9-氯-9-(二氯甲基)芴、9-乙酰氧基-9-(二氯甲基)芴和9-芴酮。1-环己烯甲酸产生1,2-二氯环己烷甲酸和1-乙酰氧基-2-氯环己烷甲酸。该反应可以用涉及乙酸锰(III)-Cl-络合的自由基机制来解释,