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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 269178Generated: October 26, 2026

3-Bromopyridine → 3-Pyridin-3-ylethynyl-7-trifluoromethyl-5-(3-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine

https://huagongshe.com/reaction/269178

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-BromopyridineHCID 12286—
Reactant3-Ethynyl-7-trifluoromethyl-5-(3-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidineHCID 86608055—
Product3-Pyridin-3-ylethynyl-7-trifluoromethyl-5-(3-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidineHCID 86608054—

Reaction Steps

The title compound was prepared from 3-ethynyl-7-trifluoromethyl-5-(3-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine (example C.10) (355 mg, 1.0 mmol) and commercially available 3-bromo-pyridine (158 mg, 1.0 mmol) according to general procedure II. Obtained as a yellow solid (211 mg, 49%). MS (EI) 432.2 [(M)+]; mp 173° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07446113B2
Source datasetuspto-grants-2008_11
ORD IDord-9904d9864d3d49caaf82b17374dc1f33
Source noteuspto-grants-2008_11