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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1699887Generated: November 1, 2026

Sulfuric Acid → HCID 22387896, compound

https://huagongshe.com/reaction/1699887

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantHCID 22388411HCID 22388411—
SolventWaterHCID 962—
ProductHCID 22387896HCID 2238789638.5%

Reaction Conditions

Temperature70 °C

Reaction Steps

To 7-(acetylcarbamoyl)-1-(2,4-dichlorobenzyl)-1,4-dihydro-2-methylquinazoline hydrochloride (0.46 g) were added water (1.2 g) and concentrated sulfuric acid (1.0 g) and the mixture was heated at 70° C. for 90 min. After cooling, ice was added and the precipitated solid was collected by filtration. The precipitate was washed with water and 2-propanol and dried to give the objective compound (0.145 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06348474B1
Source datasetuspto-grants-2002_02
ORD IDord-0c3c3ccf4a7c460caf1ed8f7379f43c7
Source noteuspto-grants-2002_02