3, 3-位に同じ置換基をもつα, α-ジメチルスチルベンの幾何異性体の合成

概要

論文の詳細を見る
The geometrical isomers of 3, 3′-dimethoxy (2)-, 3, 3′-dimethyl (3)-, 3, 3′-dibromo (4)-, and 3, 3′-dinitro (5)-α, α′-dimethylstilbene were prepared from the corresponding 3-substituted acetophenones by Vargha and Kovacss method. While the hydrazones-of 3-bromo or 3-nitroacetophenone yielded both cis- and trans-(4) or (5), respectively, as was expected, the hydrazones of 3-methoxyacetophenone gave only trans-(2) or (3), respectively. The oily products considered to be another isomers of (2) or (3) were also obtained from the reaction mixtures but attempt to isolate these compounds in pure form was abandoned owing to difficulty of purification.
社団法人有機合成化学協会の論文