Expedient Preparation of All Isomers of 2-Aminocyclobutanecarboxylic Acid in Enantiomerically Pure Form
作者:Carlos Fernandes、Elisabeth Pereira、Sophie Faure、David J. Aitken
DOI:10.1021/jo900175p
日期:2009.4.17
A short, convenient, gram scale protocol has been established to allow facile access to all four stereoisomers of 2-aminocyclobutanecarboxylic acid, each in enantiomerically pure form (ee >99%). Starting from the readily available cis racemate, the procedure combines efficient α-phenylethylamine derivative resolution and controlled cis-to-trans epimerization procedures, and proceeds with invariably