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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 526436Generated: October 26, 2026

Hydrochloric Acid → HCID 178492256, compound

https://huagongshe.com/reaction/526436

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDiisopropylethylamineHCID 81531—
Reactant6-Hydrazinonicotinic acidHCID 3782617—
ReactantEthyl 2-(4-cyano-2-methoxyphenyl)-3-(dimethylamino)acrylateHCID 117601030—
SolventWaterHCID 962—
SolventIsopropanolHCID 3776—
ProductHCID 178492256HCID 17849225673.3%

Reaction Conditions

Temperature50 °C

Reaction Steps

Combined ethyl 2-(4-cyano-2-methoxyphenyl)-3-(dimethylamino)acrylate (1.427 g, 5.20 mmol), 6-hydrazinylnicotinic acid (0.664 g, 4.34 mmol), and HCl (4.34 mL, 4.34 mmol) in 2-propanol (21.7 mL) and stirred at room temperature for 8 hours to give a solid. The solid was collected by filtration and combined with Hunig's base (1.50 mL, 8.61 mmol) in 2-propanol (10 mL) and water (1 mL) and stirred for 32 hours at 50° C., then 10 mL of 1 N HCl was added and the reaction was filtered to give a solid. The solid was washed with 30 mL MeOH and 30 mL of ether and dried in vacuo to give the title compound (708 mg, 73.3%) as a beige solid. MS m/z [M+H]+ 337.3.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09345713B2
Source datasetuspto-grants-2016_05
ORD IDord-520e36317e954ff09ae2c7bc352b1f2c
Source noteuspto-grants-2016_05