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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1893809Generated: October 30, 2026

Picolinic acid → HCID 46189104, compound

https://huagongshe.com/reaction/1893809

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 numberUS08513263B2
Source datasetuspto-grants-2013_08
ORD IDord-b337ee8e37d643f5b3fca0d748329c3d
Source noteuspto-grants-2013_08