Highly efficient synthesis of 9-aminoxanthenes via the tandem reaction of arynes with salicyl N-tosylimines
作者:Lin He、Ji Xin Pian、Jing Zhang、Yuan Zhen Li
DOI:10.1016/j.cclet.2012.11.008
日期:2012.12
A cascade insertion–nucleophilic annulation reaction of salicyl N-tosylimines with aryne generated in situ from 2-(trimethylsilyl) aryl triflate and KF-18-crown-6 has been developed, providing 9-aminoxanthenes efficiently in one step.
Efficient Synthesis of N-(9-Xanthyl)-4-Toluenesulfonamides Enabled by an Addition-Cyclization Cascade of Arynes
作者:Chong-Dao Lu、Shan-Shan Lu
DOI:10.1055/s-0032-1318311
日期:——
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.