反应详情

Following the general method as outlined in Intermediate 20, starting from (4-chloro-2-ethynyl-phenoxy)-acetic acid tert-butyl ester (Intermediate 3) and N,N-dimethyl 3-bromobenzenesulfonamide (Combiblocks), the title compound was obtained as a yellow oil after purification by flash column chromatography (silica), eluting with cyclohexane containing increasing amounts of EtOAc.