Nickel(0)-mediated [2+2+1] cyclization reaction of chromium carbene complexes and internal alkynes
作者:José Barluenga、Pablo Barrio、Lorena Riesgo、Luis A. López、Miguel Tomás
DOI:10.1016/j.tet.2006.03.117
日期:2006.8
heteroaryl chromiumFischercarbenecomplexes undergo Ni(0)-mediated [2+2+1] cyclizationreaction with internal unactivated and electron-poor internal alkynes to yield highly substituted cyclopentadienes with complete regioselectivity in most cases. The intramolecular version of this cyclization has been accomplished with 1,8-diphenyl-1,7-octadiyne to produce indene derivatives. This three-component [2+2+1]