139615-68-2Relevant articles and documents
Stereoselective synthesis of (3E,5E)-dien-2-ones and (2E,4E)-dienals via 2-phenylsulfonyl 1,3-dienes
Baeckvall, Jan-E.,Ericsson, Anna M.,Plobeck, Niklas A.,Juntunen, Seppo K.
, p. 131 - 134 (2007/10/02)
Michael addition of nitroalkanes to 2-phenylsulfonyl 1,3 dienes proceeded smoothly in the presence of DBU to give nitrosulfones (e.g. 2) in high yield. Transformation of the nitro group of the adduct to a keto function (Nef type reaction) and subsequent elimination of benzenesulfinic acid afforded conjugated dienones and dienals with high stereoselectivity.