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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1914737Generated: October 27, 2026

HCID 24993829, compound → 8-iodo-1-methyl-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxamide

https://huagongshe.com/reaction/1914737

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 24993829HCID 24993829—
Reactantammonium 1H-1,2,3-benzotriazol-1-ateHCID 57454228—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
Product8-iodo-1-methyl-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxamideHCID 4423565290.1%

Reaction Steps

A suspension of potassium 8-iodo-1-methyl-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxylate (394 mg, 1.0 mmol) in anhydrous dimethylformamide (10 mL) was treated with N-ethyl-N′,N′-diisopropyl carbodiimide hydrochloride (EDCI) (287 mg, 1.5 mmol) and with ammonium 1H-1,2,3-benzotriazol-1-ate (304 mg, 2 mmol). The reaction was stirred at room temperature overnight. The reaction was diluted with water and the resulting precipitate was collected by filtration to afford the title compound (320 mg, 90% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08614220B2
Source datasetuspto-grants-2013_12
ORD IDord-51cd962675ac4a50b608350d46b10ea2
Source noteuspto-grants-2013_12