Wenschuh, Eberhard; Hesselbarth, Frank, Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 59, # 1-4, p. 133 - 136
作者:Wenschuh, Eberhard、Hesselbarth, Frank
DOI:——
日期:——
TBD-catalyzed α-sulfenylation of cyclic ketones: desymmetrization of 4-substituted cyclohexanones
作者:Belén Poladura、Ángel Martínez-Castañeda、Humberto Rodríguez-Solla、Carmen Concellón、Vicente del Amo
DOI:10.1016/j.tet.2012.05.124
日期:2012.8
A low loading of triazabicyclo[4.4.0]dec-5-ene (TBD) catalyzes the alpha-sulfenylation reaction of ketones employing tetramethylthiuram disulfide (TMTDS) as electrophilic reagent. This methodology is mild, effective and straightforward, rendering the desired products in high yield. Prochiral 4-substituted cyclohexanones can be desymmetrized with remarkable diastereoselectivity following this protocol. The dithiocarbamoyl function was shown to be easily removed upon reduction, affording thiols (1-mercaptan-2-ols). (C) 2012 Elsevier Ltd. All rights reserved.