Regioselective Ring-Opening Metathesis−Cross Metathesis of Bridgehead-Substituted 7-Azanorbornene
作者:J. Carreras、A. Avenoza、J. H. Busto、J. M. Peregrina
DOI:10.1021/ol0631051
日期:2007.3.1
[structure: see text]. In this paper we describe a highly regioselective ring-opening metathesis-cross metathesis (ROM-CM) process between methyl N-Boc-7-azabicyclo[2.2.1]hept-2-en-1-carboxylate, a bridgehead-substituted 7-azanorbornene system, and electron-poor olefins. The reaction opens the way to the synthesis of interesting alpha-amino diacids and pyrrolizinone derivatives that incorporate quaternary
[结构:见文字]。在本文中,我们描述了N-Boc-7-氮杂双环[2.2.1]庚-2-烯-1-羧酸甲酯(桥头取代的7位)之间的高区域选择性开环复分解(ROM-CM)过程-氮杂降冰片烯体系和贫电子烯烃。该反应开辟了合成有趣的α-氨基二酸和吡咯烷酮衍生物的方法,该衍生物结合了季立体中心。