Cyanoallenes were successfully used in organophosphine-catalyzed [3+2]-type annulation to give cyano-substituted dihydropyrroles in good yield. Chiral phosphines were also screened, leading to some initial results in the asymmetric version of cyanoallene-based annulations.
在有机膦催化的[3+2]型环化反应中,成功地利用
氰烯得到了
氰基取代的二氢
吡咯,收率很高。此外,还对手性膦进行了筛选,从而在基于
氰烯的不对称环化反应中取得了一些初步成果。