HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2167633Generated: October 30, 2026
Dimethylformamide → 3-Chloro-5-[2-(4-methoxy-2-methylphenyl)ethynyl]-2-pyridinecarbonitrile
https://huagongshe.com/reaction/2167633
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Dimethylformamide | HCID 6228 | — |
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 3,5-Dichloro-2-cyanopyridine | HCID 2769699 | — |
| Reactant | 1-Ethynyl-4-methoxy-2-methylbenzene | HCID 16213796 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 3-Chloro-5-[2-(4-methoxy-2-methylphenyl)ethynyl]-2-pyridinecarbonitrile | HCID 58166522 | — |
Reaction Steps
To a round bottom flask capped with septa was added 1-ethynyl-4-methoxy-2-methylbenzene (1.1 eq), 3,5-dichloropicolinonitrile (1 eq.), triethylamine (5 eq.), and anhydrous DMF (0.2 M). The mixture was degassed (vacuum) and nitrogen flushed three times. CuI (0.05 eq.) and bis(triphenylphosphine)dichloro-palladium(II) (0.05 eq) were added and the septum was replaced with a refluxing condenser and the flask was heated at 60° C. overnight under nitrogen atmosphere. Upon completion of the reaction as monitored by TLC, the content of the flask was loaded onto a large silica gel column pretreated with hexanes. Flash chromatography (silica gel, hexanes:EtOAc (1:4%)) afforded the product 3-chloro-5-((4-methoxy-2-methylphenyl)ethynyl)picolinonitrile (B-1).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09045470B2 |
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| Source dataset | uspto-grants-2015_06 |
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| ORD ID | ord-3d13521280584e91917287db51313778 |
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| Source note | uspto-grants-2015_06 |
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