Visible light-induced cyclization reactions for the synthesis of 1,2,4-triazolines and 1,2,4-triazoles†
Abstract
A novel method for concisely synthesizing 1,2,4-triazolines via [3+2] cyclization under visible light is reported. These compounds can be easily converted into 1,2,4-triazoles under basic or photoredox conditions. The application of the 1,2,4-triazoles was also investigated via mild operations.