Synthesis of Carbazoles from Ynamides by Intramolecular Dehydro Diels−Alder Reactions
作者:María Fernanda Martínez-Esperón、David Rodríguez、Luis Castedo、Carlos Saá
DOI:10.1021/ol050609a
日期:2005.5.1
[reaction: see text]. A new approach to carbazoles and benzannulated carbazoles by means of intramolecular dehydro Diels-Alder reactions of ynamides is reported. By using this approach, carbazoles and benzo[b]-, tetrahydrobenzo[b]-, naphtho[1,2-b]-, naphtho[2,1-b]-, and dibenzo[a,c]carbazoles have been prepared in moderate-to-good yields.
[反应:请参见文字]。报道了通过酰胺类的分子内脱氢Diels-Alder反应来制备咔唑和苯并二甲基咔唑的新方法。通过这种方法,已经制备了咔唑和苯并[b]-,四氢苯并[b]-,萘[1,2-b]-,萘[2,1-b]-和二苯并[a,c]咔唑中等至良好的产量。