反应详情

The same operation as in Example (221a) was performed using 3-tert-butoxycarbonylaminoazetidine (199 mg, 1.15 mmol), ethyl 2-bromo-1,3-benzothiazole-6-carboxylate obtained in Example (225a) (300 mg, 1.05 mmol) and diisopropylethylamine (0.37 mL, 2.10 mmol), to obtain 297 mg of the title compound as a milk white solid (75%).