Enantioselective and Solvent-Controlled Diastereoselective Mannich Reaction of Isatin Imines with Hydroxyacetone: Synthesis of 3-Substituted 3-Aminooxindoles
作者:Qi-Xiang Guo、Yu-Wan Liu、Xing-Cheng Li、Ling-Zhi Zhong、Yun-Gui Peng
DOI:10.1021/jo202585w
日期:2012.4.6
The diastereoselectively switchable enantioselective Mannich reaction of isatin imines with hydroxyacetone is reported. The chiral primary amino acid catalyzed this Mannich reaction to afford both anti- and syn-Mannich adducts in high yields, good diastereoselectivities, and enantioselectivities. The reason for the solvent control of the diastereoselectivity phenomenon was investigated.
报道了靛红亚胺与羟丙酮的非对映选择性可切换的对映选择性曼尼希反应。手性伯氨基酸催化此曼尼希反应,得到既抗和顺式以高产率,良好的非对映选择性,和对映选择性-Mannich加合物。研究了溶剂控制非对映选择性现象的原因。