α-Aroylidineketene dithioacetal chemistry: CuI catalyzed synthesis of 2-styryl benzimidazoles enroute to regioselective hydrothiolation
作者:Pandi Dhanalakshmi、Sivakumar Shanmugam
DOI:10.1016/j.tet.2015.06.008
日期:2015.9
Reactivity of alpha-aroylidineketene dithioacetals 2 was investigated to synthesize novel 2-styrylbenzimidazole derivatives 4 and their hydrothiolated product 2-(2-(methylthio)-2-arylethyl)-1H-benzoidlimidazoles 5 has been reported. Compounds 4 and 5 were synthesized by cyclocondensation of alpha-aroylidineketene dithioacetals 2 and o-phenylene diamine (OPD) 3 in the presence and absence of copper catalyst respectively. Regioselective one-pot tandem hydrothiolation of olefin functionality in 4 was achieved under AcOH conditions. (C) 2015 Elsevier Ltd. All rights reserved.
Singh, L. W.; Ila, H.; Junjappa, H., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 607 - 610
作者:Singh, L. W.、Ila, H.、Junjappa, H.
DOI:——
日期:——
SINGH, L. W.;ILA, H.;JUNJAPPA, H., INDIAN J. CHEM., 26,(1987) N 7, 607-610