Mechanistic and stereochemical studies on Ferrier reaction by means of chirally deuterated glucose
作者:Noriaki Yamauchi、Takumi Terachi、Tadashi Eguchi、Katsumi Kakinuma
DOI:10.1016/s0040-4020(01)86708-9
日期:1994.4
formation from 5-enopyranosides, was investigated by using (E)-selectively deuterated methyl [6-2H]-2,3,4-tri-O-benzyl-α-D-xylo-hex-5-enopyranoside. The overall reaction was non-stereoselective with respect to the C-6 position of the substrate. Crucial organomercurial intermediates were isolated and characterized. The loss of stereochemical integrity was attributed mainly to the formation of an open-chain organomercurial
通过使用(E)-选择性氘代甲基[6- 2 H] -2,3,4-三-O-苄基-α-D-木糖己二酸来研究费雷尔反应的机理,即从5-烯吡喃糖苷形成环糖醇。-5-enopyranoside。相对于底物的C-6位置,整个反应是非立体选择性的。分离并表征了关键的有机汞中间体。立体化学完整性的损失主要归因于开链有机汞的形成及其快速平衡。建议了一种涉及自由基中间体的机制。