Aldol condensations of chiral ethylketones: Control by chiral boron reagents.
作者:Ian Paterson、M. Anne Lister
DOI:10.1016/s0040-4039(00)80157-4
日期:——
The chiral reagents (+)- and (−)-Ipc)2BOTf, in the presence of Et3N, are used to control the aldolcondensation reactions of chiral ethylketone 5 with prochiral aldehydes. The SS isomer, 6 or 8, or SA isomer, 7 or 9, is then formed in > 99% ee and with up to 93% diastereoselectivity.