A series of α-quaternary arylglycines were prepared in high optical purity (up to 98% ee) by α-alkylation of deprotonated α-aminonitriles derived by the Strecker reaction from (4S,5S)-5-amino-2,2-dimethyl-4-phenyl-1,3-dioxane. The procedure includes only chromatographic purification of the final products and is devoid of chromatography or crystallization operations on intermediates to raise the optical
通过由(4 S,5 S)-5-
氨基-2,2的Strecker反应衍生的去质子化的α-
氨基腈的α-烷基化反应制备了一系列光学纯度高(高达ee达98%ee)的α-季芳基甘
氨酸。 -二甲基-4-苯基-1,3-
二恶烷。该方法仅包括最终产物的色谱纯化,并且没有对中间体进行色谱或结晶操作以提高光学纯度。