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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1784380Generated: October 30, 2026

Hydrazine → 4-Hydrazinyl-6,7-dimethoxyquinazoline

https://huagongshe.com/reaction/1784380

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazineHCID 9321—
Reactant4-Chloro-6,7-dimethoxyquinazolineHCID 2769364—
SolventTetrahydrofuranHCID 8028—
Product4-Hydrazinyl-6,7-dimethoxyquinazolineHCID 2026381091%

Reaction Steps

To a suspension of 4-Chloro-6,7-dimethoxy-quinazoline (0.20 g, 0.89 mmol) in anhydrous THF (0.5 ml) was added hydrazine (1M in THF, 2.0 ml, 2.0 mmol). The mixture was stirred at room temperature for 16 hours whereupon a precipitate had formed which was removed by filtration and washed with cold THF to give the desired product (177 mg, 91%) as a sticky off white solid which was sufficiently pure to be used without any further purification. m/z (LC-MS, ESP): 221 [M+H]+, R/T=2.48 mins.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07504397B2
Source datasetuspto-grants-2009_03
ORD IDord-a30a485362424c4b8517d06d2a1f8278
Source noteuspto-grants-2009_03