Organic Solvent-Free, Enantio- and Diastereoselective, Direct Mannich Reaction in the Presence of Water
作者:Yujiro Hayashi、Tatsuya Urushima、Seiji Aratake、Tsubasa Okano、Kazuki Obi
DOI:10.1021/ol702489k
日期:2008.1.1
An organocatalyst-mediated, asymmetric Mannich reaction in the presence of water without using organic solvents has been developed. A highly reactive siloxytetrazole hybrid catalyst has been developed for the reaction of dimethoxyacetaldehyde, while the sodium salt of siloxyproline is an effective catalyst of alpha-imino glyoxylate. Excellent enantioselectivity can be realized, and the usage of organic
已经开发了在不使用有机溶剂的情况下在水存在下的有机催化剂介导的不对称曼尼希反应。已经开发出高反应性的甲硅烷氧基四唑杂化催化剂用于二甲氧基乙醛的反应,而甲硅烷氧基脯氨酸的钠盐是α-亚氨基乙醛酸酯的有效催化剂。与在有机溶剂中的常规反应相比,可以实现优异的对映选择性,并且可以减少有机溶剂的使用。