Synthesis of enantiomerically pure α-amino acids via chemo- and diastereoselective alkylation of (5S)-5-phenyl-5,6-dihydro-2H-1,4-oxazin-2-one
作者:Laurence M. Harwood、Simon N.G. Tyler、A. Susan Anslow、Iain D. MacGilp、Michael G.B. Drew
DOI:10.1016/s0957-4166(97)00587-9
日期:1997.12
(5S)-5-Phenyl-5,6-dihydro-2H-1,4-oxazin-2-one 2 undergoes Lewis acid-mediated chemo- and diastereoselective nucleophilic addition of Grignard reagents to furnish adducts 3 which can be dismantled to allow-ready access to enantiomerically pure (S)-alpha-amino acids 4. (C) 1997 Elsevier Science Ltd. All rights reserved.
(5S)-5-苯基-5,6-二氢-2H-1,4-氧嗪-2-酮在路易斯酸介导下进行化学和立体选择性良好的Grignard试剂亲核加成反应,生成加成物。随后,该加成物可以通过简便的方法转化为光学纯的(S)-α-氨基酸。版权(C) 1997 Elsevier Science Ltd. 所有权利保留。