Catalytic and asymmetric oxidation of sulphides with iron complexes of chiral ‘twin coronet’ porphyrins
作者:Yoshinori Naruta、Fumito Tani、Kazuhiro Maruyama
DOI:10.1039/c39900001378
日期:——
Iron porphyrins that are modified on both faces by chiral binaphthalenes catalysedasymmetricoxidation of sulphides in fair to good enantiomeric excesses and excellent turnover numbers of the catalysts in the presence of 1-methylimidazole.
Optically pure chiral sulfoxides using ephedrine as a chiral auxiliary
作者:Scott C. Benson、John K. Snyder
DOI:10.1016/s0040-4039(00)79417-2
日期:1991.10
Optically pure chiral sulfoxides can be formed in good to excellent yields by sequential displacement reactions of organometallic reagents on the 1,2,3-oxathiazolidine-S-oxide formed from ephedrine and thionyl chloride, a modification of the Wudl and Lee procedure.