One-pot syntheses of dihydro benzo[b][1,4]thiazepines and -diazepines via coupling–isomerization–cyclocondensation sequences
作者:Roland U. Braun、Thomas J.J. Müller
DOI:10.1016/j.tet.2004.08.001
日期:2004.10
2,4-Di(hetero)aryl substituted 2,3-dihydro benzo[b][1,4]heteroazepines 7 and 9 (hetero=S, NH) can be readily synthesized in a one-pot process initiated by a coupling-isomerization sequence of an electron poor (hetero)aryl halide 4 and a terminal propargyl alcohol 5 subsequently followed by a cyclocondensation with 2-mercapto or 2-amino anilines 6 or 8, respectively. In addition, the structures were established unambiguously by an X-ray structure analysis of 9b. (C) 2004 Elsevier Ltd. All rights reserved.
A Novel 1,5-Benzoheteroazepine Synthesis via a One-Pot Coupling−Isomerization−Cyclocondensation Sequence
作者:Roland U. Braun、Kirsten Zeitler、Thomas J. J. Müller
DOI:10.1021/ol006721k
日期:2000.12.1
2,4-Di(hetero)aryl substituted 2,3-dihydro 1,5-benzoheteroazepines (hetero = NH, O, S) can be readily sythesized in a one-pot process initiated by a coupling-isomerization sequence of an electron poor (hetero)aryl halide and a terminal propargyl alcohol subsequently followed by a cyclocondensation with 2-amino, 2-hydroxy, or 2-mercapto anilines. In addition, the structures were established unambiguously by an X-ray structure analysis of 7a.
Monga, Vikramdeep; Nayak, Surendra Kumar; Singh, Gurpreet, Indian Journal of Heterocyclic Chemistry, 2017, vol. 27, # 2, p. 143 - 149