Synthesis and Diels-Alder reactions of a facially dissymmetric tetracyclo-fused maleic anhydride with cyclic dienes
作者:Teh-Chang Chou、Tzong-Shing Jiang、Jenn-Tsang Hwang、Cheng-Tung Lin
DOI:10.1016/s0040-4039(00)73140-6
日期:1994.6
Facially dissymmetric maleicanhydride 1 is synthesized and undergoes Diels-Alder cycloadditions with cyclic dienes exclusively on the face syn to its etheno-bridges.
Stereoselectivity in the Diels-Alder Cycloadditions of a Facially Dissymmetric Bicyclo[2.2.2]octadiene-Grafted Maleic Anhydride with Exocyclic Butadienes. Unexpected Facial Selectivity in the Cycloaddition with 2,3,5,6-tetramethylidenebicyclo[2.2.2]octene
作者:Teh-Chang Chou、Liang-Hsuan Kuo、Kun-Fa Liu
DOI:10.1002/jccs.200300045
日期:2003.4
The Diels-Aldercycloadditions of facially dissymmetric maleicanhydride 1 with facially nonequivalent exocyclic 1,3-butadienes(dimethylidenebicyclo[2.2.2]octene 3 and 2,3,5,6-tetramethylidenebicyclo[2.2.2]-octene (4)) were investigated. In each cycloaddition, the reaction occurred via the course in which 1 added exclusively by its syn-face (same face as the etheno-bridge) onto either π-face of the