Formation of tetrahydrofurans via a 5-endo-tet cyclization of aziridines – synthesis of (−)-pachastrissamine
作者:Chen-Wei Lin、Sin-Wei Liu、Duen-Ren Hou
DOI:10.1039/c3ob40797g
日期:——
The formation of tetrahydrofurans from 2-hydroxyalkyl-oxirane or aziridine is reported. The 5-endo-tet cyclization/ring opening of aziridine proceeded smoothly to give tetrahydrofurans (THFs) under mild conditions. In contrast, the corresponding process of oxirane was unsuccessful and a sequence of SN2 substitution/cyclization was required to form THFs. The application of the process to prepare ent-(â)-pachastrissamine is described.
据报道,2-羟基烷基环氧乙烷或氮丙啶可以形成四氢呋喃。在温和条件下,氮丙啶的5-endo-tet环化/开环反应顺利进行,生成四氢呋喃(THFs)。相比之下,环氧乙烷的相应过程未能成功,需要通过一系列SN2取代/环化步骤才能形成THFs。本文描述了该过程在制备ent-(−)-pachastrissamine中的应用。