A strain-release-driven, cation-templated nucleophilic 7- and 8-exo-trig-cyclization of tethered Boc-protected amines to cyclopropenes is described. The featured reaction proceeds in diastereo- and regioselective fashion and allows for preparation of the corresponding 2,5-diazabicyclo[5.1.0]octan-6-ones and 2,6-diazabicyclo[6.1.0]nonan-7-ones as sole products in high yields. Preliminary studies on
描述了由束缚的Boc保护的胺到环
丙烯的应变释放驱动的,阳离子模板的亲核7-和8 -exo- trig-环化。该特征反应以非对映和区域选择性方式进行,并允许制备相应的2,5-二
氮杂双环[5.1.0]辛-6-酮和2,6-二
氮杂双环[6.1.0]壬南-7-酮为唯一化合物。产品高产。对这些新颖的
环丙烷融合
培养基杂环的抗癌活性进行了初步研究。