Pseudoephedrine alpha-fluoroacetamide (1), a nonvolatile, crystalline
solid, is alkylated efficiently and with high diastereoselectivity wit
h reactive alkylhalides. The alkylation products can be hydrolyzed und
er mild basic conditions to form alpha-fluoro carboxylates with high e
nantiomeric enrichment. (C) 1998 Elsevier Science Ltd. All rights rese
rved.