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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1362821Generated: October 26, 2026

Phosphorus oxychloride → 3-Chloro-5-phenyl-pyridazine-4-carbonitrile

https://huagongshe.com/reaction/1362821

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
Reactant3-Oxo-5-phenyl-2,3-dihydro-pyridazine-4-carbonitrileHCID 59735096—
Product3-Chloro-5-phenyl-pyridazine-4-carbonitrileHCID 59735097—

Reaction Conditions

Temperature100 °C

Reaction Steps

3-Oxo-5-phenyl-2,3-dihydro-pyridazine-4-carbonitrile (70 mg) was suspended in 1 mL phosphorous oxychloride and heated to 100° C. for 6 hours. The mixture was then cooled and poured onto ice. The resulting brown solid product was filtered and air dried and used in the next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07883881B2
Source datasetuspto-grants-2011_02
ORD IDord-5c3140f2591b463ba6e46e7d0968f95c
Source noteuspto-grants-2011_02