Chemodivergent Photocatalyzed Heterocyclization of Hydrazones and Isothiocyanates for the Selectivity Synthesis of 2-Amino-1,3,4-thiadiazoles and 1,2,4-Triazole-3-thiones
作者:Qing-Hu Teng、Feng-Lai Lu、Kai Wang、Li-Ya Zhou、Dian-Peng Li
DOI:10.1021/acs.joc.3c00320
日期:2023.6.2
A photocatalytic chemodivergent reaction for the selectivity formation of C–S and C–N bonds in a controlled manner was proposed. The reaction medium, either neutral or acidic, is critical to dictate the formation of 2-amino-1,3,4-thiadiazoles and 1,2,4-triazole-3-thiones from isothiocyanates and hydrazones. This is a practical protocol to achieve the chemoselectivity under mild and metal-free conditions