PROCESS FOR CROSSED CLAISEN CONDENSATION REACTIONS PROMOTED BY LITHIUM AMIDE IN LIQUID AMMONIA
申请人:Bakhu Pharma Limited
公开号:US20150197476A1
公开(公告)日:2015-07-16
The present invention provides a use of lithium amide in liquid ammonia as a base to produce an enolate from at least one ester starting material in a crossed Claisen condensation reaction, wherein at least one ester starting material is a β-hydroxy ester. Also provided is a method of producing lithium amide in situ for use in a crossed Claisen condensation reaction, wherein lithium is added to liquid ammonia, followed by an electron transfer agent, as well as a method of carrying out a crossed Claisen condensation reaction using an ester starting material and a β-hydroxy ester, using lithium amide in liquid ammonia produced in situ.
本发明提供了在液氨中使用氨基锂作为碱,从至少一种酯起始物质中生成烯醇酸盐的用途,用于交叉克莱森缩合反应,其中至少一种酯起始物质是β-羟基酯。还提供了一种用于在交叉克莱森缩合反应中原位生成氨基锂的方法,其中将锂加入液氨,然后加入一个电子转移剂,以及一种使用酯起始物质和β-羟基酯进行交叉克莱森缩合反应的方法,使用原位生成的液氨中的氨基锂。