Carbocyclic α-amino acids: asymmetric synthesis of all four 1-amino-2-hydroxycyclohexanecarboxylic acids
作者:Kamalesh Pai Fondekar、Franz-J Volk、August W Frahm
DOI:10.1016/s0957-4166(99)00045-2
日期:1999.2
respectively, the four stereoisomers of 1-amino-2-hydroxycyclohexanecarboxylic acid are obtained via an asymmetric Strecker synthesis with ee values ranging from 87 to 98%. Their stereochemistry is established by NMR methods and by X-ray analyses. Hydrogenolysis of a benzylic C–N bond by conc. sulphuric acid as well as cleavage of a methoxy ether by conc. HCl are two intriguing reactions which are observed