Chlorination of αβ-unsaturated carbonyl compounds. Part III. Reaction of chlorine with trans-cinnamic acid and the trans-cinnamate ion
作者:Mercedes C. Cabaleiro、M. D. Johnson、B. E. Swedlund、J. G. Williams
DOI:10.1039/j29680001022
日期:——
2-dichloroethylbenzene. The chlorostyrene is formed by a direct reaction of the trans-cinnamateion with chlorine, and not by elimination of carbon dioxide from the addition products or from the intermediate ion-pairs. The ethylbenzene derivatives are formed by further chlorination of the chlorostyrene. The trans-cinnamateion also undergoes chlorodecarboxylation in aqueous solution, whereas trans-cinnamic acid
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−