Synthesis and stereochemical studies of some 4,4-diethoxycarbonyl-2,6-diaroyl-3,5- diarylthiane-1,1-dioxides

Abstract

376-377<span style="font-size:16.5pt;mso-bidi-font-size:8.5pt; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Michael addition of diethyl malonate over 2,2'-sulfonyl-bis(1,3-diarylprop-2-en-1-ones 1a-e in the presence of sodium ethoxide furnish 4,4-diethoxycarbonyl-2,6-diaroyl-3,5-diarylthiane-1,1-dioxides 2a-e in very good yields. The stereochemistry of 2a-e has been deduced from 1H NMR spectroscopic data.</span