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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 558915Generated: October 31, 2026

5-Ethynylpyridin-2-amine → 5-[5-(4-Chloro-phenyl)-7-methyl-pyrazolo[1,5-a]pyrimidin-3-ylethynyl]-pyridin-2-ylamine

https://huagongshe.com/reaction/558915

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-Ethynylpyridin-2-amineHCID 21954827—
Reactant5-(4-Chloro-phenyl)-3-iodo-7-methyl-pyrazolo[1,5-a]pyrimidineHCID 67001322—
Product5-[5-(4-Chloro-phenyl)-7-methyl-pyrazolo[1,5-a]pyrimidin-3-ylethynyl]-pyridin-2-ylamineHCID 67000572—

Reaction Steps

The title compound was prepared from 5-(4-chloro-phenyl)-3-iodo-7-methyl-pyrazolo[1,5-a]pyrimidine (example 292) (185 mg, 0.5 mmol) and 5-ethynyl-pyridin-2-ylamine (example D.1) (59 mg, 0.5 mmol) according to general procedure II. Obtained as a yellow solid (113 mg, 63%). MS (ISP) 360.0 [(M+H)+]; mp 244-246° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08063048B2
Source datasetuspto-grants-2011_11
ORD IDord-2a29f446ced34159a73fcedc8cc69051
Source noteuspto-grants-2011_11