1,5-annelated 4-methylenecyclopentenes by intramolecular type I zinc-ene reactions followed by Pd(0)-catalyzed cyclization
作者:J. van der Louw、C.M.D. Komen、A. Knol、F.J.J. de Kanter、J.L. van der Baan、F. Bickelhaupt、G.W. Klumpp
DOI:10.1016/s0040-4039(00)99387-0
日期:1989.1
3-(Alk-m-ynyl)-2-(methoxymethyl)-2-propenylzinc bromides 1 (m = 4,5,6) undergo intramolecular carbometallation. The products 2 were converted by Pd(0)-catalyzed cyclization to 1,5-annelated 4-methylenecyclopentenes 3.
3-(烷基-间-炔基)-2-(甲氧基甲基)-2-丙烯基溴化锌1(m = 4,5,6)经历分子内碳金属化反应。产物2通过Pd(0)催化的环化反应转化为1,5-退火的4-亚甲基环戊烯3。