Candida antartica B (immobilized CAL-B) mediated resolutions of trans-2-(phenylthio)cyclohexanol derivatives using vinyl acetate as acylating agent and MTBE as solvent provide excellent enantioselectivity (up to >99%) and high yield of both the enantiomers in short reaction time. (C) 2013 Elsevier B.V. All rights reserved.
Reactions of mercuric salts with bis(diethylthiocarbamoyl) disulfide and benzenesulfenyl chloride
A convenient method for 1,2-acetoxysulfenylation of alkenes using disulfide promoted by (diacetoxyiodo)benzene (PhI(OAc)(2), DIB)/KI was developed. The reaction is highly regioselective for styrene derivatives while aliphatic alkenes lead to a mixture of two regioisomers. (c) 2013 Elsevier Ltd. All rights reserved.
Generation of cyclohexene-s-phenylepisulfonium fluoborate and its reaction with nucleophilic reagents