5,5-Dimethyl-2-phenylamino-2-oxazoline as an effective chiral auxiliary for asymmetric alkylations
作者:Thanh Nguyen Le、Quynh Pham Bao Nguyen、Jae Nyoung Kim、Taek Hyeon Kim
DOI:10.1016/j.tetlet.2007.09.001
日期:2007.10
The novel chiralauxiliaries, 5,5-diphenyl-2-phenylamino-2-oxazoline and 5,5-dimethyl-2-phenylamino-2-oxazoline, were prepared from l-valine methyl ester. The 5,5-dimethyl compound was shown to be a particularly effective chiralauxiliary for asymmetric alkylation affording high yields and diastereoselectivities.