Metal-Free [2+2+1] Annulation of Alkynes, Nitriles and Nitrogen Atoms from Iminoiodanes for Synthesis of Highly Substituted Imidazoles
作者:Akio Saito、Yui Kambara、Takuma Yagyu、Keiichi Noguchi、Akira Yoshimura、Viktor V. Zhdankin
DOI:10.1002/adsc.201500032
日期:2015.3.9
Boron trifluoride nitrile complexes promote oxidative [2+2+1] annulations of alkynes, nitriles and N‐atoms from iminoiodanes to give the corresponding 2,4‐disubstituted and 2,4,5‐trisubstituted N‐tosylimidazoles in moderate to good yields with high regioselectivities.
三氟化硼腈络合物可促进亚氨基碘的炔烃,腈和N-原子的[2 + 2 + 1]氧化环化反应,从而以中等至良好的收率得到相应的2,4-二取代和2,4,5-三取代的N-甲苯磺酰咪唑,高区域选择性。