158556-22-0

Upstream product

• 94-09-7 p-aminoethylbenzoate 
• 104804-98-0 potassium 2,4,6-triisopropylbenzeneselenolate 
• 619-58-9 4-iodobenzoic acid 
• 158556-23-1 ethyl 4-(2',4',6'-triisopropylphenylselanyl)benzoate 
• 2028-79-7 4-(ethoxycarbonyl)benzenediazonium chloride 
• 1778-11-6 (4-Ethoxycarbonyl)phenylselenocyanate 
• 104804-99-1 4-carboxyphenyl 2,4,6-tri-isopropylphenyl selenide 

Downstream Products

• 104805-00-7 4-<(-)-menthyloxycarbonyl>phenyl 2,4,6-tri-isopropylphenyl selenide 
• 158647-76-8 4-<(-)-menthyloxycarbonyl>phenyl 2,4,6-tri-isopropylphenyl selenoxide 
• 104805-03-0 C₂₃H₃₀O₃Se 

Relevant academic research and scientific papers

SYNTHESIS OF OPTICALLY ACTIVE SELENOXIDE

Fractional recrystallization of diastereomeric 2,4,6-triisopropylphenyl 4'-(l-menthyloxycarbonyl)phenyl selenoxide gave optically pure (-)-selenoxide.Transesterification of this diastereomerically pure (-)-selenoxide with methanol gave enantiomeric (-)-2,4,6-triisopropylphenyl 4'-(methoxycarbonyl)-phenyl selenoxide in 88.1percent optical purity.

Synthesis and Stereochemistry of Optically Active Selenonium Imides

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.