Synthesis and Exploratory Photochemistry of ,-unsaturated Carboxylic Acid, Carboxamide and Nitrile Derivatives

[摘要] The ketone chromophore of 1-Acetyl-1-methyl-2-cyclopentene (1) was replaced by nitrile, carboxylic acid and acetamide group, and their photochemical reactions were investigated. While the ¥â,¥ã-unsaturated ketone 1 afforded 1,2 ar 1,3-Acyl shift product, these replaced chromophores did not afford any monomeric rearranged products. 1-Cyano-1-methyl-2-cyclohexene also afforded no product anology of the 1,2-acyl shift reaction. The replacement of the ketone chromophore by nitrile, carboxylic acid and carboxamide has greatly altered the photochemistry of ¥â,¥ã-unsaturated ketones.

[学科分类] 化学（综合）