Acceptorless Dehydrogenative Coupling Using Ammonia: Direct Synthesis of N-Heteroaromatics from Diols Catalyzed by Ruthenium
作者:Prosenjit Daw、Yehoshoa Ben-David、David Milstein
DOI:10.1021/jacs.8b08385
日期:2018.9.26
The synthesis of N-heteroaromatic compounds via an acceptorless dehydrogenative coupling process involving direct use of ammonia as the nitrogen source was explored. We report the synthesis of pyrazine derivatives from 1,2-diols and the synthesis of N-substituted pyrroles by a multicomponent dehydrogenative coupling of 1,4-diols and primary alcohols with ammonia. The acridine-based Ru-pincer complex
探索了通过直接使用氨作为氮源的无受体脱氢偶联过程合成 N-杂芳族化合物。我们报告了从 1,2-二醇合成吡嗪衍生物以及通过 1,4-二醇和伯醇与氨的多组分脱氢偶联合成 N-取代吡咯。吖啶基 Ru-钳形配合物 1 是这些转化的有效催化剂,其中吖啶主链转化为阴离子脱芳构化 PNP-钳形配体框架。