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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2374758Generated: October 31, 2026

2,4-Dichloroaniline → N-(2,4-dichlorophenyl)-3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carboxamide

https://huagongshe.com/reaction/2374758

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,4-DichloroanilineHCID 11123—
ReactantOxalyl chlorideHCID 65578—
ReactantN-(2,4-dichlorobenzyl)-3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carboxamideHCID 10339420—
Reactant3-Oxo-6-(pyridin-4-yl)-2,3-dihydropyridazine-4-carboxylic acidHCID 12790238—
SolventDimethylformamideHCID 6228—
SolventDichloromethaneHCID 6344—
SolventTriethylamineHCID 8471—
ProductN-(2,4-dichlorophenyl)-3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carboxamideHCID 10473713199.4%

Reaction Steps

Working as in example 2 for the preparation of N-(2,4-dichlorobenzyl)-3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carboxamide, but starting with 0.3 g of 3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carboxylic acid, 10 cm3 of dichloromethane, 0.02 cm3 of dimethylformamide, 0.12 cm3 of oxalyl chloride, 0.036 g of 2,4-dichloroaniline and 0.19 cm3 of triethylamine, 0.16 g of N-(2,4-dichlorophenyl)-3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carboxamide was obtained in the form of a cream-colored solid melting above 260° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07462613B2
Source datasetuspto-grants-2008_12
ORD IDord-a826de9c913d4330ba6d51326f1cf109
Source noteuspto-grants-2008_12