HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dimethylformamide → 3-Chloropyridine-2-carbonitrile
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dimethylformamide | HCID 6228 | — |
| Reactant | Dichloromethane | HCID 6344 | — |
| Reactant | 2,3-Dichloropyridine | HCID 16988 | — |
| Catalyst | Zinc cyanide (Zn(CN)2) | HCID 11186 | — |
| Catalyst | Zinc | HCID 23994 | — |
| Catalyst | Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+) | HCID 178418228 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 3-Chloropyridine-2-carbonitrile | HCID 818258 | 76% |
Reaction Steps
A mixture of 2,3-dichloropyridine (1.48 g, 10 mmol), zinc cyanide (705 mg, 6 mmol,), zinc (dust, 29 mg, 0.45 mmol), [1,1′-bis(diphenylphosphino)ferrocene] dichloropalladium(II), complex with dichloromethane (1:1) (0.18 g, 0.22 mol) in N,N-dimethylformamide (10 mL) was heated at reflux for 5 hours. After cooling, the reaction was diluted with ethyl acetate and extracted with water and brine. Removal of the solvent and silica gel chromatography afforded 1.05 g (76%) of 2-cyano-3-chloropyridine.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07112595B2 |
| Source dataset | uspto-grants-2006_09 |
| ORD ID | ord-126f92eb20a045fa9957b4bace969a02 |
| Source note | uspto-grants-2006_09 |