T. Takahashi et al., NUCLEOPHILIC-SUBSTITUTION REACTION OF OPTICALLY PURE CHLOROSELENURANEWITH ACTIVE METHYLENE-COMPOUNDS - FORMATION OF OPTICALLY PURE SELENONIUM YLIDES, Chemistry Letters, (5), 1995, pp. 379-380
Nucleophilic substitution reaction of (R(Se))-chloroselenurane 1 with
active methylene compounds proceeded in highly stereoselective manner
with retention of configuration to give (S-Se)-selenonium ylides 2. (S
-Se)- and (R(Se))-Ylides, 2 and 3, were stereospecifically formed from
the reaction of (R(Se))- and (S-Se)-selenoxides, 4 and 5, with active
methylene compounds.