Synthesis of Asymmetric Urea Derivatives from COS and Amines: Substrate Selection, Scope Studies, and Mechanism Investigation
作者:Siliu Cheng、Jiakai Wu、Huijie Jia、Ruijun Xie、Ning Zhu
DOI:10.1021/acs.joc.3c02140
日期:2023.12.15
series of asymmetric ureas were synthesized by a one-pot reaction of amines and carbonyl sulfide (COS) under catalyst-free conditions. The highly selective synthesis of asymmetric urea was successfully achieved by the use of weakly nucleophilic aromatic amines and highly nucleophilic secondary aliphatic amines. Moreover, a reaction mechanism was proposed based on the detailed NMR and FTIR study. This efficient
在无催化剂条件下,通过胺和羰基硫(COS)的一锅反应合成了一系列不对称脲。通过使用弱亲核芳香胺和高亲核脂肪族仲胺,成功实现了不对称尿素的高选择性合成。此外,基于详细的 NMR 和 FTIR 研究,提出了反应机理。这种有效的合成方法为合成不对称脲衍生物提供了一种温和且选择性的方法。