顺-2-丁烯 、
丁炔二酸二甲酯 反应 24.0h,
生成
2-Eth-(Z)-ylidene-5-eth-(E)-ylidene-3,4-dimethyl-hexanedioic acid dimethyl ester 、 (1S,2R,3R,4R,5S,6S)-2,3,5,6-Tetramethyl-bicyclo[2.2.0]hexane-1,4-dicarboxylic acid dimethyl ester 、 (2R,3R,5R,6R)-2,3,5,6-Tetramethyl-bicyclo[2.2.0]hexane-1,4-dicarboxylic acid dimethyl ester 、 (1S,2R,3R,4R,5S,6R)-2,3,5,6-Tetramethyl-bicyclo[2.2.0]hexane-1,4-dicarboxylic acid dimethyl ester