Zinc-Catalyzed Synthesis of Dithioacetals through Double Hydrosulfenylation of Alkynes by Thiols
作者:Nobukazu Taniguchi、Kenji Kitayama
DOI:10.1055/s-0037-1610302
日期:2018.12
various solvents, and the corresponding products are obtained regioselectively. Dihydrosulfenylation of alkynes with thiols can also be achieved by using a zinc catalyst, and the reaction is preferentially promoted over monohydrosulfenylation. The reaction can also give dithioacetals regioselectively in excellent yields.
The anti-Markovnikov addition of thiols to alkenes/alkynes and thiolysis of epoxides is described using Amberlyst-15(C) as a selective, commercially available, inexpensive and reusable catalyst. The products like diorganyl sulphides, beta-hydroxy sulphides and phenyl(styryl)sulfanes were obtained in good to excellent yields in short reaction time and with high regio-selectivity. The catalyst was reused up to five consecutive recycles without any loss in its catalytic activity. The developed methodology is a metal free protocol for C-S bond formation reaction with high atom economy. (C) 2013 Elsevier B.V. All rights reserved.
2-(4-Pyridyl)ethyl as a protective group for sulfur functionality
作者:Alan R. Katritzky、Ichiro Takahashi、Charles M. Marson
DOI:10.1021/jo00375a029
日期:1986.12
KATRITZKY, A. R.;KHAN, GH. R.;SCHWARZ, O. A., TETRAHEDRON LETT., 1984, 25, N 12, 1223-1226
作者:KATRITZKY, A. R.、KHAN, GH. R.、SCHWARZ, O. A.
DOI:——
日期:——
KATRIZKY A. R.; TAKAHASHI ICHIRO; MARSON CH. M., J. ORG. CHEM., 51,(1986) N 25, 4914-4920
作者:KATRIZKY A. R.、 TAKAHASHI ICHIRO、 MARSON CH. M.