STEREOSELECTIVITY OF DIENE-TRANSMISSIVE DIELS-ALDER REACTION; CYCLOADDITION REACTION OF CROSS-CONJUGATED TRIENE SYSTEM TO OLEFINIC DIENOPHILES
作者:Otohiko Tsuge、Eiji Wada、Shuji Kanemasa
DOI:10.1246/cl.1983.1525
日期:1983.10.5
stereoselectivity of diene-transmissive Diels–Alder reaction of a cross-conjugated triene, 3-benzylidene-2,4-bis(trimethylsilyloxy)-1,4-pentadiene, with a variety of olefinic dienophiles was investigated. Cyclic dienophiles gave the stereoselective bis-adducts via the endo mono-cycloadducts, whereas the exo mono-adducts were obtained as major products in the reaction with acyclic dienophiles. The steric regulation
研究了交叉共轭三烯、3-亚苄基-2,4-双(三甲基甲硅烷氧基)-1,4-戊二烯与多种烯烃亲二烯体的二烯透射狄尔斯-阿尔德反应的立体选择性。环状亲二烯体通过内单环加合物产生立体选择性双加合物,而外单加合物是与非环状亲二烯体反应的主要产物。讨论了二烯传输的 Diels-Alder 反应的空间调节。