A convenient synthetic method was reported for the preparation of N-phthaloyl dehydroamino acid esters from easily accessible vinyl bromides (or vinyl tosylate) and potassium phthalimide. Rh-catalyzed asymmetric hydrogenation of these substrates with TangPhos gave the products with good to excellent enantioselectivities (up to 99% ee).
据报道,一种方便的合成方法是从容易获得的
乙烯基溴化物(或甲
苯磺酸乙烯基酯)和邻苯二甲
酰亚胺钾盐制备N-
邻苯二甲酰基脱氢
氨基酸酯。用TangPhos对这些底物进行Rh催化的不对称氢化,使产物具有良好的至优异的对映选择性(高达99%ee)。