Addition Reactions of Sulfonylimidates with Imines Catalyzed by Alkaline Earth Metals
作者:Huy Van Nguyen、Ryosuke Matsubara、Shū Kobayashi
DOI:10.1002/anie.200900309
日期:2009.7.27
safer: Addition reactions of sulfonylimidates to imines are catalyzed by alkaline‐earth‐metal alkoxide salts, which are abundant, inexpensive, and nontoxic. Diastereoselectivity is highly dependent on solvent and catalyst, and both syn and anti adducts are obtained in high yields and with high diastereoselectivity (see scheme). The first catalytic asymmetric Mannich‐type reaction of a sulfonylimidate
便宜,安全:碱土金属醇盐可催化磺酰亚胺类化合物与亚胺的加成反应,这种碱金属盐含量丰富,价格低廉且无毒。非对映选择性高度依赖于溶剂和催化剂,顺式和反加合物均以高收率和高非对映选择性获得(参见方案)。还介绍了磺酰亚胺酯的第一个催化不对称曼尼希型反应。