Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Iodide Ion | HCID 30165 | — |
| Reactant | 3-Cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-5-formyl-4-trifluoromethylthiopyrazole | HCID 11812098 | — |
| Reactant | HCID 178418348 | HCID 178418348 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Product | HCID 9803806 | HCID 9803806 | — |
Reaction Steps
Cooper (I) iodide (6.1 g, 0.032 mol) was suspended in anhydrous diethyl ether and cooled to 0° C. Methyllithium (1.6 M in diethyl ether, 40 ml, 0.064 mol) was added via cannula and stirred 10 minutes. A solution of the product of Example 3 (10 g, 0.023 mol) in diethyl ether was added via cannula creating a bright yellow suspension. After 15 minutes, 10% aqueous hydrochloric acid (40 ml) was added while venting the reaction vessel. The remaining suspension was filtered through Celite® and washed with diethyl ether several times. The organic phase was washed with saturated sodium hydrogen carbonate solution, saturated aqueous sodium chloride solution, dried over magnesium sulfate, filtered and concentrated under reduced pressure. Trituration from pentane provided crystals that were purified by silica gel chromatography using ethyl acetate:hexanes. The title compound was isolated as a white solid (7.56 g), m.p. about 123° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06395906B1 |
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| Source dataset | uspto-grants-2002_05 |
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| ORD ID | ord-c07ef517ec3040f79521862528f20061 |
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| Source note | uspto-grants-2002_05 |
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