According to the present invention, a sulfinyl imine having an alcohol, thiol or amine residue on a sulfinyl group is stereoselectively reduced, or a sulfinyl imine stereoisomer having an alcohol, thiol or amine residue on a sulfinyl group is nucleophilic. Reacting with an atomic source to provide a sulfinylamine stereoisomer, and then contacting the sulfinylamine stereoisomer with a reagent suitable for cleavage of a sulfur-nitrogen bond to provide the amine stereoisomer. A method for producing amine stereoisomers is provided. The present invention also provides methods for using some of the above intermediates in the preparation of novel intermediates, sulfoxide and sulfinylamine stereoisomers useful in the above methods.
Practical and highly stereoselective technology for preparation of enantiopure sulfoxides and sulfinamides utilizing activated and functionally differentiated N-sulfonyl-1,2,3-oxathiazolidine-2-oxide derivatives
作者:Zhengxu Han、Dhileepkumar Krishnamurthy、Paul Grover、Q. Kevin Fang、Xiping Su、H. Scott Wilkinson、Zhi-Hui Lu、Daniel Magiera、Chris H. Senanayake
DOI:10.1016/j.tet.2005.03.122
日期:2005.6
A simple, general, and practical technology to prepare enantiopure 1,2,3-oxathiazolidine-2-oxide derivatives using chiral aryl N-sulfonyl aminoalcohol derivatives and thionyl chloride is reported. The versatility of these novel chiral building blocks (MIOO and TMPOO), was exemplified by the expedient production of a variety of unique chiral sulfoxides and valuable chiral sulfinamides in excellent yields