This invention provides intermediates useful in a method of preparing amine stereoisomers. It also provides a method of preparing sulfoxide and sulfinylamine stereoisomers using certain of the intermediates.
This application is a divisional of application Ser. No. 10/508,941, filed Mar. 2, 2005 now U.S. Pat. No. 7,129,378 the entirety of which is incorporated herein by reference, which is a 371 of international patent application number PCT/US03/08827 filed Apr. 7, 2003 and claims the benefit of U.S. provisional patent application No. 60/371,158 filed on Apr. 10, 2002.