Synthesis of 2-aryl-2H-indazoles by base catalysed reaction of 2-nitrobenzyl triphenylphosphonium bromide and aryl isocyanates
作者:Abutariq Taher、Sweta Ladwa、Srinath Thirumalai Rajan、George W Weaver
DOI:10.1016/s0040-4039(00)01757-3
日期:2000.12
The synthesis of a series of 2-aryl-2H-indazoles is reported. These compounds are obtained in moderate to good yield by reaction of 2-nitrobenzyl triphenylphosphonium bromide with aryl isocyanates, catalysed by sodium hydride or DBU.