On the Reaction Pathway and Stereochemistry of Allylic Tin Reagents-Benzaldehyde Condensation. A Substituent Effect Study
作者:Hiroshi Yamataka、Kazuyoshi Nishikawa、Terukiyo Hanafusa
DOI:10.1246/cl.1990.1711
日期:1990.9
A substituent effect study on the reactivity and steneoselectivity of the Lewis acid mediated addition of allyl- and crotylstannanes to arylaldehydes indicates that the reaction proceeds via a polar antiperiplanar transition state with the exception of 2,4,6-trimethylbenzaldehyde, for which a cyclic pathway competes with the open pathway.
对路易斯酸介导的烯丙基和巴豆基锡烷与芳醛加成的反应性和立体选择性的取代基效应研究表明,该反应通过极性反周向过渡态进行,2,4,6-三甲基苯甲醛除外,其循环途径与开放路径竞争。