Selective mono- and bis-sulfenylation of activemethylene groups with a variety of disulfides at an ambient temperature is reported. Sulfenylation is promoted by iodine as a catalyst and sulfenyl iodides as intermediates, under metal-free conditions. The method is greener in terms of solvent selection and the use of less hazardous DMSO as an oxidant. The procedure is highly efficient with readily available
Metal free sulfenylation of active methylene compounds and indole: TBATB mediated synthesis
作者:Rajjakfur Rahaman、Namita Devi、Pranjit Barman
DOI:10.1016/j.tetlet.2015.05.062
日期:2015.7
The present work addresses a development of metal free one pot direct method for sulfenylation of active methylene compounds and indole. The reaction might proceed through sulfenyl bromide as an intermediate, which initiates the C-S bond formation. The reaction was performed using tetrabutylammonium tribromide (TBATB) as a brominating agent, CH2Cl2 as a solvent at room temperature. (C) 2015 Elsevier Ltd. All rights reserved.
Koval', I. V.; Panasenko, T. G., Journal of Organic Chemistry USSR (English Translation), 1989, vol. 25, # 8.1, p. 1512 - 1514
作者:Koval', I. V.、Panasenko, T. G.
DOI:——
日期:——
KOVAL, I. V.;PANASENKO, T. G., ZH. ORGAN. XIMII, 25,(1989) N, S. 1677-1680
作者:KOVAL, I. V.、PANASENKO, T. G.
DOI:——
日期:——
KOVAL, I. V.;PANASENKO, T. G., YKP. XIM. ZH., 56,(1990) N, S. 638-641