triflate and (R,R)-Ph-BOX as a catalyst. This method was successfully applied to a variety of 2-hydroxyalkanamides in high enantioselectivity with up to 92% ee, and then tosylated product was easily transformed into opticallyactive α-amino acid derivatives.
Silylation-Based Kinetic Resolution of α-Hydroxy Lactones and Lactams
作者:Robert W. Clark、T. Maxwell Deaton、Yan Zhang、Maggie I. Moore、Sheryl L. Wiskur
DOI:10.1021/ol402982w
日期:2013.12.20
A silylation-based kinetic resolution has been developed for alpha-hydroxy lactones and lactams employing the chiral isothiourea catalyst (-)-benzotetramisole and triphenylsilyl chloride as the silyl source. The system is more selective for lactones than lactams, and selectivity factors up to 100 can be achieved utilizing commercially available reagents.