A variety of hindered alpha-trisubstituted optically active secondary alcohols has been converted into their enantiomers by treating the corresponding triflates with KNO2 in DMF in the presence of 18-crown-6 at room temperature.
Synthesis of Unsymmetrically Substituted α-Aminoalkylphosphonate Esters
作者:Robert M. Moriarty、Kaiming Liu、Hui Zhuang、David Lenz、Alan Brimfield、Chizhong Xia
DOI:10.1080/00397919508011823
日期:1995.9
The title compounds were designed as haptens for production of monoclonal antibodies as potential catalysts for phosphoryl transfer reactions of phosphates and phosphonates. These haptens conform to the ''bait and switch'' model.
GESCHÜTZTE 3,5-DIHYDROXY-2,2-DIMETHYL-VALERONITRILE FÜR DIE SYNTHESE VON EPOTHILONEN- UND DERIVATEN UND VERFAHREN ZUR HERSTELLUNG UND DIE VERWENDUNG