1-(4-Chlorophenyl)-4,4,4-trifluorobutane-1,3-dione → 5-(4-Chloro-phenyl)-3-pyridin-4-yl-7-trifluoromethyl-pyrazolo[1,5-a]pyrimidine

Participants

Reaction Steps

Reaction of 1-(4-chloro-phenyl)-4,4,4-trifluoro-butane-1,3-dione (125 mg, 0.5 mmol), prepared from commercially available 4-chloro-acetophenone according to general procedure A, and 3-amino-4-(4-pyridinyl)-pyrazole [CAS No. 216661-87-9; prepared from 4-cyanomethyl-pyridine as described in Bioorg. Med. Chem. Lett. 12 (2002) 3537-3541] (80 mg, 9.5 mmol) according to general procedure B yielded the title compound as a yellow solid (135 mg, 72%). MS (ISP) 375.3 [(M+H)+]; mp 274° C.

Provenance & Evidence