Immobilized Carbodiimide Assisted Flow Combinatorial Protocol to Facilitate Amide Coupling and Lactamization
作者:Christian Dankers、Joseph Tadros、David G. Harman、Janice R. Aldrich-Wright、Thanh V. Nguyen、Christopher P. Gordon
DOI:10.1021/acscombsci.0c00001
日期:2020.5.11
injecting a single solution (1:9 dimethylformamide: dichloromethane) containing a carboxylic acid and an amine or linear peptide sequence into a continuous stream of dichloromethane. The protocol remained viable in the absence of base, did not require carboxylate preactivation which, and in concert with minimal workup requirements, enabled the isolation of products in high yields. Compared to the utilization
通过在存在,不存在二异丙胺和苯并三唑添加剂的情况下或将其组合使用时,对反应温度,溶剂,碳二亚胺树脂和碳二亚胺摩尔当量的一百三十多种排列进行筛选,一种便捷且首次报道的碳二亚胺聚合物辅助流动方法开发了酰胺偶联和内酰胺化作用。该方案需要将包含羧酸和胺或线性肽序列的单一溶液(1:9二甲基甲酰胺:二氯甲烷)注入连续的二氯甲烷流中。该方案在没有碱的情况下仍然可行,不需要羧酸盐预活化,这与最低限度的后处理要求相结合,能够以高收率分离出产物。与使用非限制碳二亚胺试剂相比,