New Concise Route to 2-Amino-3-hydroxycycloalkanecarboxylic Acids by Imidate-Mediated Intramolecular Conjugate Addition
作者:Yoshitaka Matsushima、Jun Kino
DOI:10.1002/ejoc.200801173
日期:2009.4
Trichloroacetimidates, generated either in situ or prepared and isolated from methyl 3-hydroxycycloalk-1-enecarboxylates, undergo stereoselective intramolecular conjugate addition reactions to produce oxazolines. These oxazolines lead, in a novel, simple way, to 2-amino-3-hydroxycycloalkanecarboxylic acids and their derivatives. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
三氯乙酰亚胺酯,无论是原位生成的还是从 3-羟基环烷-1-烯羧酸甲酯制备和分离的,经过立体选择性分子内共轭加成反应生成恶唑啉。这些恶唑啉以一种新颖、简单的方式导致 2-氨基-3-羟基环烷羧酸及其衍生物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)