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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 869680Generated: October 29, 2026

Methanol → HCID 178482932, compound

https://huagongshe.com/reaction/869680

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantEthyl AcetateHCID 8857—
ReactantHCID 178472229HCID 178472229—
Catalyst4-(Dimethylamino)pyridineHCID 14284—
SolventWaterHCID 962—
ProductHCID 178482932HCID 178482932—

Reaction Conditions

Temperature65 °C

Reaction Steps

Method B (DMAP salt): A suspension of ethyl 3-{[3-(3-methylquinoxalin-2-yl)-1H-pyrazol-5-yl]amino}-3-oxopropanoate (1.00 g, 2.95 mmol) and 4-dimethylaminopyridine (DMAP) (1.08 g, 8.84 mmol) in water (7 mL), tetrahydrofuan (7 mL), and methanol (7 mL) was heated at 65° C. for 4 h. After being cooled to ambient temperature, the reaction mixture was diluted with water and ethyl acetate. The aqueous layer was collected and concentrated in vacuo. The residue was triturated with ether acetate to give 2-(3-methylquinoxalin-2-yl)pyrazolo[1,5-a]pyrimidine-5,7-diol DMAP salt. MS (APCI): m/z 294 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08969376B2
Source datasetuspto-grants-2015_03
ORD IDord-4175ad4f23c943c39e5158ff4d41510b
Source noteuspto-grants-2015_03