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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1398178Generated: October 30, 2026

Hydrochloric Acid → 3-[3-Methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylic acid

https://huagongshe.com/reaction/1398178

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
ReactantEthyl 3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylateHCID 66608009—
SolventTetrahydrofuranHCID 8028—
Product3-[3-Methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylic acidHCID 6660828897.6%

Reaction Steps

A mixture of ethyl 3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-8-methyl-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate (1.5 g), 1N aqueous sodium hydroxide solution (7.57 mL) and THF (8 mL) was stirred at room temperature for 16 hr. The reaction mixture was acidified with 1N hydrochloric acid, and the organic layer was evaporated under reduced pressure. The mixture was stirred at room temperature for 30 min, and the obtained solid was collected by filtration to give the title compound (1.36 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08901309B2
Source datasetuspto-grants-2014_12
ORD IDord-93512107965b42ccb10bd07a8477e831
Source noteuspto-grants-2014_12