A Three-Component Approach to 3,5-Diaryl-1,2,4-thiadiazoles under Transition-Metal-Free Conditions
作者:Hao Xie、Jinhui Cai、Zilong Wang、Huawen Huang、Guo-Jun Deng
DOI:10.1021/acs.orglett.6b00806
日期:2016.5.6
A novel route is disclosed for the synthesis of 1,2,4-thiadiazoles starting from amidines, elemental sulfur, and 2-methylquinolines or aldehydes under transition-metal-free conditions. This three-component approach affords efficient and rapid access to 3,5-diaryl substituted 1,2,4-thiadiazoles with good tolerance of a broad range of funcitional groups. Mechanistic studies reveal a radical-involved
公开了从am,元素硫和2-甲基喹啉或醛开始的无过渡金属条件下合成1,2,4-噻二唑的新途径。这种三组分方法可快速有效地获得3,5-二芳基取代的1,2,4-噻二唑,并且对广泛的官能团具有良好的耐受性。机理研究揭示了一种涉及激进的途径。