Protonated DBU as catalyst for cascade addition–cyclization of 2-alkynylaniline and carbon disulfide
摘要:
Protonated 1,8-diazabicyclo[5,4,0]undec-7-ene as catalyst for cascade addition/cyclization of 2-alkynylaniline and carbon disulfide has been described. This process provides a convenient route for synthesis of a variety of benzo[d][1,3]thiazine-2(4H)-thiones in high yields with high regio- and stereoselectivity at room temperature without metal. (C) 2013 Elsevier Ltd. All rights reserved.
Protonated DBU as catalyst for cascade addition–cyclization of 2-alkynylaniline and carbon disulfide
作者:Peng Zhao、Qian Liao、Hongxin Gao、Chanjuan Xi
DOI:10.1016/j.tetlet.2013.02.074
日期:2013.5
Protonated 1,8-diazabicyclo[5,4,0]undec-7-ene as catalyst for cascade addition/cyclization of 2-alkynylaniline and carbon disulfide has been described. This process provides a convenient route for synthesis of a variety of benzo[d][1,3]thiazine-2(4H)-thiones in high yields with high regio- and stereoselectivity at room temperature without metal. (C) 2013 Elsevier Ltd. All rights reserved.