Asymmetric synthesis of substituted 1-aminocyclopropane-1-carboxylic acids from a new chiral glycine equivalent with 3,6-dihydro-2H-1,4-oxazin-2-one structure
作者:Rafael Chinchilla、Larry R Falvello、Nuria Galindo、Carmen Nájera
DOI:10.1016/s0957-4166(98)00244-4
日期:1998.7
Condensation of the new chiral glycine equivalent 10 with aldehydes at room temperature in the presence of K2CO3 under solid-liquid phase-transfer-catalysed conditions afforded stereoselectively new chiral (Z)-alpha,beta-didehydroamino acid (DDAA) derivatives with oxazinone structure 14. These systems have been used in diastereoselective cyclopropanation reactions for the synthesis of enantiomerically pure 1-aminocyclopropanecarboxylic acids (ACCs) such as (-)-allo-norcoronamic and (-)-allo-coronamic acids. (C) 1998 Elsevier Science Ltd. All rights reserved.