97678-49-4Relevant articles and documents
ASYMMETRIC MICHAEL ADDITION OF THIOPHENOL TO MALEIC ACID ESTERS
Yamashita, Hiroyuki,Mukaiyama, Teruaki
, p. 363 - 366 (2007/10/02)
(S)-(-)-Diisopropyl phenylthiosuccinate (81percent optical purity) is prepared in 95percent yield by the asymmetric Michael addition of thiophenol to diisopropyl maleate in the presence of a catalytic amount of cinchonine.The succinate thus prepared is transformed into (R)-(+)-3,4-epoxy-1-butanol without racemization.