HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 917891Generated: October 25, 2026
2-Propynenitrile → 3,3-bis(trifluoromethyl)-5-cyano-3H-pyrazole
https://huagongshe.com/reaction/917891
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 2-Propynenitrile | HCID 14055 | — |
| Reactant | 2-Diazo-1,1,1,3,3,3-hexafluoropropane | HCID 12576164 | — |
| Product | 3,3-bis(trifluoromethyl)-5-cyano-3H-pyrazole | HCID 21524147 | 87.6% |
Reaction Steps
A sealed glass tube containing 36.2 g of bis(trifluoromethyl)diazomethane and 10.2 g of cyanoacetylene was heated at 50°C for 24 hours. The product was distilled to give 40.1 g of 3,3-bis(trifluoromethyl)-5-cyano-3H-pyrazole, bp 38°C/12 mm. The ultraviolet, infrared, and mass spectra as well as the proton and fluorine nuclear magnetic resonance spectra were consistent with the proposed structure.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US03968137 |
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| Source dataset | uspto-grants-1976_07 |
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| ORD ID | ord-035d16fc6c3c47899705387996336489 |
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| Source note | uspto-grants-1976_07 |
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