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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 474413Generated: October 29, 2026

Methanol → HCID 178497556, compound

https://huagongshe.com/reaction/474413

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantSulfuric AcidHCID 1118—
ReactantSodium BicarbonateHCID 516892—
ReactantHCID 178524225HCID 178524225—
SolventWaterHCID 962—
ProductHCID 178497556HCID 178497556—

Reaction Conditions

Temperature50 °C

Reaction Steps

A 1 L round bottom flask was charged with 4-hydroxyquinazoline-8-carboxylic acid (A), MeOH (300 mL), and H2SO4 (10 mL). The reaction was heated to 50° C. for 2 days. Upon cooling to room temperature, the reaction mixture was neutralized with NaHCO3 and diluted with water. The methanol was removed in vacuo, and the precipitate was collected, washed with water and heptanes, then dried to give methyl 4-hydroxyquinazoline-8-carboxylate (18.3 g, 65%, over 2 steps combining both isomers from A and B).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08637532B2
Source datasetuspto-grants-2014_01
ORD IDord-140cf1be6cf34ef8a3747627797f425b
Source noteuspto-grants-2014_01