Laboratoire Charles Friedel, Ecole Nationale Supérieure de Chimie de Paris UMR 7223, 11 rue P. et M. Curie, F-75231 Paris Cedex 05, France.
Chem Commun (Camb). 2009 Dec 7(45):6988-90. doi: 10.1039/b913554e. Epub 2009 Oct 14.
The enantioselective asymmetric gold-catalyzed cycloisomerization reactions of heteroatom tethered 1,6-enynes are conducted in the presence of a chiral cationic Au(i) catalyst ((R)-4-MeO-3,5-(t-Bu)(2)-MeOBIPHEP-(AuCl)(2)/AgOTf system) in toluene under mild conditions and lead to functionalized bicyclo[4.1.0]heptene derivatives in excellent enantiomeric excesses ranging from 90-98%.
在手性阳离子金(i)催化剂((R)-4-MeO-3,5-(t-Bu)(2)-MeOBIPHEP-(AuCl)(2)/AgOTf 体系)存在下,在温和条件下,将杂原子键合的 1,6-烯炔进行对映选择性不对称金催化环异构化反应,在甲苯中得到功能化的双环[4.1.0]庚烯衍生物,对映过量高达 90-98%。