Synthesis of chiral 3E,5E-octadiene-1,2R,7R,8-tetraol frameworks by means of palladium(II)-promoted hetero-Claisen rearrangement: Mechanistic aspect
作者:Seiki Saito、Akiyoshi Kuroda、Hiroshi Matsunaga、Shushiro Ikeda
DOI:10.1016/0040-4020(96)00854-x
日期:1996.10
for the exclusive formation of symmetrical dienediol such as 1,6-bis(acetoxy)-2,4-diene in palladium(II)-promoted [3,3]sigmatropic rearrangement of 3,4-bis(acetoxy)-1,5-diene system. This mechanism referred to as migration-induced intramolecular dioxanium ion switching (MIDIS) process can reasonably explain why the vicinal acetoxy groups move from 3,4-position not to 5,6- but two-directionally to 1
已经提出了一种可能的机理,用于在钯(II)促进的3,4-双(3,3)σ重排中独家形成对称的二烯二醇,例如1,6-双(乙酰氧基)-2,4-二烯。乙酰氧基)-1,5-二烯体系。这种被称为迁移诱导的分子内二恶烷离子交换(MIDIS)过程的机制可以合理地解释为什么邻位乙酰氧基不是从3,4-位置移动到5,6-而是从两个方向移动到1,6-位置。