反应详情

Prepared from 3-bromo-7-difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine (18.6 g, 45 mmol) and commercially available trimethylsilylacetylene (11.1 mL, 80 mmol) as described in example C.1, step 3a to give 7-difluoromethyl-5-(4-trifluoromethyl-phenyl)-3-trimethylsilanylethynyl-pyrazolo[1,5-a]pyrimidine (16.3 g, 99%) as an orange-solid. MS (ISP) 410.1 [(M+H)+].