作者:Masakazu Sono、Yasuyo Nakashiba、Katsuyuki Nakashima、Motoo Tori
DOI:10.1021/jo9918450
日期:2000.5.1
Samarium(II) iodide has been employed to promote vinylogous pinacol coupling reaction of aldehyde onto alpha,beta-unsaturated ketones. The diastereoselectivity of 6-endo products was changed by addition of a proton source and/or HMPA and by the reaction temperature. The cyclization reactions described herein provide a general approach to the syntheses of 3,3-dimethylhydrindanes with a cis-relationship
碘化mar已被用于促进醛醇式频哪醇偶联反应到α,β-不饱和酮上。通过添加质子源和/或HMPA以及通过反应温度来改变6内基产物的非对映选择性。本文所述的环化反应提供了在温和的反应条件下以良好的非对映选择性在C-4处的OH与C-3a处的质子之间具有顺式关系的3,3-二甲基丙烷的合成的一般方法。