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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2379073Generated: October 30, 2026

Methanol → HCID 18957862, compound

https://huagongshe.com/reaction/2379073

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantWaterHCID 962—
ReactantSodium CarbonateHCID 10340—
ReactantHCID 9904451HCID 9904451—
SolventAcetic AcidHCID 176—
ProductHCID 18957862HCID 18957862—

Reaction Conditions

Temperature60 °C

Reaction Steps

To a 10 ml round bottomed flask fitted with a magnetic stirrer bar was added 1,6-dihydro-1-[2-(2-pyridinylcarbonylamino)ethyl]-6-oxo-3-pyridinecarboxylic acid methyl ester (0.177 g, 0.59 mmol), methanol (1.4 ml), water (1.4 ml), and 15% aqueous sodium carbonate (1.4 ml). The resulting suspension was heated in a 60° C. oil bath for 1 hour during which time the mixture was completely solvated. Upon cooling to room temperature, acetic acid was added dropwise, with stirring, to a final pH of 5.5. The precipitated product was recovered by filtration, washed with water, and dried at 50° C. under high vacuum, MP: 266°-268° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05360808
Source datasetuspto-grants-1994_11
ORD IDord-2af0eaa68c424b6fbcc6aace5a68e320
Source noteuspto-grants-1994_11