1-Alkylthio-3-aryloxypropan-2-ols: synthesis and enantiomer separation by lipase-catalyzed transesterification
作者:Monika Wielechowska、Jan Plenkiewicz
DOI:10.1016/j.tetasy.2003.08.005
日期:2003.10
The optically active (R)- and (S)-1-alkylthio-3-aryloxypropan-2-ols were prepared in the reaction of the appropriate arylglycidyl ethers and alkyl thiols followed by lipase-catalyzed transesterification. The effect of aryl and alkyl substituents, the enzyme preparation as well as the reaction conditions have been compared in terms of enantiomeric excess of the obtained acetate and the unreacted alcohol. (C) 2003 Elsevier Ltd. All rights reserved.
Direct conversion of tert-butyl 2-hydroxyalkyl sulfides to 1,3-oxathiolanes
作者:Michael J. Porter、Fabienne Saez、Amandeep Kaur Sandhu
DOI:10.1016/j.tet.2005.10.026
日期:2006.1
tert-Butyl 2-hydroxyalkyl sulfides, prepared by reaction of epoxides with 2-methylpropane-2-thiol, are converted directly to 1,3-oxathiolanes upon treatment with pivalaldehyde and boron trifluoride diethyl etherate in the presence of thioanisole.