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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.
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.