Efficient Synthesis of N-(9-Xanthyl)-4-Toluenesulfonamides Enabled by an Addition-Cyclization Cascade of Arynes
摘要:
An efficient synthesis of N-(9-xanthyl)-4-toluenesulfonamides is described in which salicyl N-tosylimines react with silylaryl triflates in the presence of CsF. This mild process involves an addition-cyclization cascade in which arynes are generated and trapped in situ.