作者:Stephen G. Davies、Ai M. Fletcher、Linlu Lv、Paul M. Roberts、James E. Thomson
DOI:10.1016/j.tetasy.2012.07.001
日期:2012.6
The conjugate addition of lithium (R)-N-benzyl-N-(alpha-methylbenzyl)amide to a range of beta-fluoroaryl-alpha,beta-unsaturated esters gave the corresponding beta-amino esters with high diastereoselectivity and in good isolated yields. Sequential treatment of the resultant beta-fluoroaryl-beta-amino esters under optimised hydrogenolysis conditions, followed by ester hydrolysis with 2.0 M aq HCl, provided access to a range of beta-fluoroaryl-beta-amino acids in good yield. (c) 2012 Elsevier Ltd. All rights reserved.