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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 569778Generated: October 31, 2026

Potassium Carbonate → HCID 13887377, compound

https://huagongshe.com/reaction/569778

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant2-Bromoethylamine hydrobromideHCID 2774217—
ReactantHCID 14099454HCID 14099454—
SolventDimethylformamideHCID 6228—
ProductHCID 13887377HCID 1388737773.9%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 0.57 g of 4,5-dihydro-6-[4-(isothiocyano)phenyl]-3(2H)-pyridazinone, 0.51 g of 2-bromoethylamine hydrobromide and 0.34 g of anhydrous K2CO3 in 12 ml of DMF is heated at 80° C. for four hours. The reaction mixture is cooled, filtered, and the filtrate is concentrated under reduced pressure. The residue is treated with water, neutralized, and filtered to give 0.5 g of 6-[4-[(4,5-dihydro-2-thiazolyl)amino]phenyl]-4,5-dihydro-3(2H)-pyridazinone, mp 217°-218° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04734415
Source datasetuspto-grants-1988_03
ORD IDord-464bcebeaeba465fbd740cb594dd27da
Source noteuspto-grants-1988_03