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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 537800Generated: October 30, 2026

Picolinic acid → HCID 46189104, compound

https://huagongshe.com/reaction/537800

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPicolinic acidHCID 1018—
ReactantDiisopropylethylamineHCID 81531—
ReactantMethanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 9886157—
Reactant(R)-5-(2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-amineHCID 67329531—
SolventDimethylformamideHCID 6228—
SolventEthyl AcetateHCID 8857—
ProductHCID 46189104HCID 4618910487%

Reaction Steps

To a mixture of (R)-5-(2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-amine (Example 6, Step A; 30 mg, 0.1 mmol), picolinic acid (15 mg, 0.12 mmol), and HATU (46 mg, 0.12 mmol) was added 0.7 mL DMF to make a solution. After cooling in an ice bath for 10 minutes, DIEA (0.053 mL, 0.3 mmol) was added to the reaction drop-wise. The reaction was allowed to warm up to ambient temperature and stirred for 10 minutes. The reaction mixture was diluted with EtOAc (15 mL), washed with water and brine (5 mL each), concentrated, and purified by reverse-phase column chromatography, eluting with 5 to 70% acetonitrile/water to yield the final product as a yellowish solid (35 mg, 86% yield). MS (apci) m/z=403.2 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08865698B2
Source datasetuspto-grants-2014_10
ORD IDord-1d10c90147324a48a1562e7775d3c696
Source noteuspto-grants-2014_10