HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1749204Generated: November 1, 2026
Phosphorus oxychloride → HCID 118232987, compound
https://huagongshe.com/reaction/1749204
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Phosphorus oxychloride | HCID 24813 | — |
| Reactant | HCID 118232985 | HCID 118232985 | — |
| Solvent | Acetonitrile | HCID 6342 | — |
| Product | HCID 118232987 | HCID 118232987 | — |
Reaction Steps
In another embodiment, 4-methyl-1-(pyridin-3-yl)pyrazolidin-3-one (1) in acetonitrile is chlorinated with phosphoryl chloride and the mixture is heated to about 75° C. The 3-(3-chloro-4-methyl-4,5-dihydro-1H-pyrazol-1-yl)pyridine (2) can be isolated and purified by standard techniques.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09156813B1 |
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| Source dataset | uspto-grants-2015_10 |
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| ORD ID | ord-4649b5b7556f4b50bba8468469621508 |
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| Source note | uspto-grants-2015_10 |
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