反应详情

The same operation as in Example (217a) was performed using 3-tert-butoxycarbonylaminoazetidine (212 mg, 1.23 mmol), ethyl 2-bromo-4-n-butyl-1,3-thiazole-5-carboxylate obtained in Example (220b) (300 mg, 1.03 mmol) and diisopropylethylamine (0.36 mL, 2.06 mmol), to obtain 294 mg of the title compound as a white solid (74%).