133706-55-5Relevant articles and documents
Synthesis and Stereochemistry of Optically Active Selenonium Imides
Kamigata, Nobumasa,Taka, Hideo,Matsuhisa, Ayumi,Matsuyama, Haruo,Shimizu, Toshio
, p. 2257 - 2264 (2007/10/02)
Diastereomeric mixtures of 4-phenyl(methyl)selenonium-N-toluene-4'-sulfonimides (dia.-1) amd 4-phenyl(2',4',6'-triisopropylphenyl)selenonium-N-toluene-4''-sulfonimides (dia.-7) were synthesized.Optical resolution by the fractional recrystallization of dia.-7 from methanol gave the optically pure (-)-selenonium imide as stable crystals.The absolute configuration around the selenium atom was determined to be S based on the CD spectra.The kinetics for the epimerization by pyramidal inversion of the optically active selenonium imide were studied.
Synthesis of Optically Active Selenonium Ylide
Kamigata, Nobumasa,Nakamura, Yoshihiro,Matsuyama, Haruo,Shimizu, Toshio
, p. 249 - 250 (2007/10/02)
Fractional recrystallization of diastereomeric methylselenonium 4,4-dimethyl-2,6-dioxocyclohexylide from hexane-ether gave optically pure (+)-selenonium ylide as a stable crystal.