作者:Klaus Totschnig、Ernst P. Ellmerer-Müller、Paul Peringer
DOI:10.1080/10426509608046388
日期:1996.6.1
phenyldi-chlorophosphine with the N-methylamides of α-hydroxy isobutyric acid and the two chiral carboxylic acids (S) lactic acid and (R,S) mandelic acid, which leads to diastereomeric products. Reaction control by means of 31P n.m.r. demonstrates two surprising findings: the preferred generation of the thermody-namically less stable cis-isomer and an epimerization of the phosphorus chirality centre at room