S. Bull, S. Davies, A. Garner
Dec 11, 2001
Citations
0
Influential Citations
6
Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
Addition of a range of organocuprates to (S)-N,N′-bis(p-methoxybenzyl)-3-methylene-6-isopropylpiperazine-2,5-dione 8 affords cis-3-isopropyl-6-alkyldiketopiperazines in excellent yield and >95% de. Subsequent deprotection and hydrolysis of these cis-3-isopropyl-6-alkyldiketopiperazines affords homochiral (S)-α-amino acids in excellent yield.