One-Pot Synthesis of 3,4,5-Trisubstituted 1,2,4-Triazoles via the Addition of Hydrazides to Activated Secondary Amides
作者:William S. Bechara、Inna S. Khazhieva、Elsa Rodriguez、André B. Charette
DOI:10.1021/acs.orglett.5b00128
日期:2015.3.6
secondary amides and hydrazides via triflic anhydride activation followed by microwave-induced cyclodehydration. In addition, the 1,2,4-triazole moiety is shown to be a useful directing group for Ru-catalyzed C–H arylation. Access to 1,2,4-triazolophenanthridine can be achieved from the reaction products using a Pd-catalyzed intramolecular C–H functionalization reaction.
已经开发了一种通用方法,用于通过三氟甲磺酸酐活化然后微波诱导的环脱水作用,从仲酰胺和酰肼一锅合成3,4,5-三取代的1,2,4-三唑。另外,1,2,4-三唑部分被证明是Ru催化的CH芳基化的有用的指导基团。使用Pd催化的分子内C–H官能化反应可以从反应产物中获得1,2,4-三唑并菲啶。