作者:Martin E. Maier、Prodeep Phukan、Matthias Bauer
DOI:10.1055/s-2003-40210
日期:——
Several aldol products resulting from Evans aldol reactions were converted to primary alcohols. After conversion to the corresponding tosylates, heating with Nal and DBU in dimethoxyethane (glyme) effected clean elimination to the terminal olefin. This simple one-pot procedure was applied to other tosylates and a tosylate derived from a homoallylic alcohol. The latter gave rise to a diene.
由 Evans 醛醇反应产生的几种醛醇产物被转化为伯醇。在转化为相应的甲苯磺酸酯后,在二甲氧基乙烷(甘醇二甲醚)中与 Nal 和 DBU 一起加热实现了末端烯烃的完全消除。这种简单的一锅法适用于其他甲苯磺酸盐和衍生自高烯丙醇的甲苯磺酸盐。后者产生二烯。