Reductive cyclization of ester-containing enynes with a practical titanocene reagent. Synthesis of bicyclic cyclopentenones and iminocyclopentenes
作者:Robert B. Grossman、Stephen L. Buchwald
DOI:10.1021/jo00048a001
日期:1992.10
The combination of Cp2TiCl2 with 2 equiv of EtMgBr provides an effective reagent for the reductive cyclization of enynes, including ester-containing enynes, to bicyclic titanacyclopentenes. These metallacycles may then be transformed into bicyclic cyclopentenones or iminocyclopentenes in good yields by reaction with CO or an isocyanide, respectively.
ITO, JOSIXIKO;TAMAO, KOXEHJ;IVAMOTO, MAIKTO
作者:ITO, JOSIXIKO、TAMAO, KOXEHJ、IVAMOTO, MAIKTO
DOI:——
日期:——
TAMAO, KOHEI;KOBAYASHI, KENJI;ITO, YOSHIHIKO, J. AMER. CHEM. SOC., 110,(1988) N 4, 1286-1288