作者:Albert Padwa、M. Woods Wannamaker
DOI:10.1016/s0040-4020(01)86547-9
日期:1991.8
behavior of several arylsulfonyl substituted alkynes with 2-diazopropane has been carried out. These activated acetylenes react to give 3H-pyrazoles which extrude nitrogen on photolysis to produce cyclopropenes in high yield. Soft nucleophiles such as thiophenoxide readily add to the activated pi-bond to give thiophenyl substituted cyclopropanes. Reaction of 1-phenylsulfonyl-2,3,3-trimethylcyclopropene
已经研究了几种芳基磺酰基取代的炔烃与2-重氮丙烷的环加成行为。这些活化的乙炔反应生成3H-吡唑,可在光解时挤出氮,从而以高收率生产环丙烯。柔软的亲核试剂(例如噻吩氧化物)可以轻松地添加到活化的pi键中,得到硫苯基取代的环丙烷。1-苯基磺酰基-2,3,3-三甲基环丙烯与正丁基锂反应,然后与各种亲电试剂进行烷基化,生成芳基磺酰基取代的亚甲基环丙烷。这些化合物进行热重排,以形成热力学上更稳定的异丙基环丙烷。