Dimethylformamide → HCID 21188081, compound

HRID 1383571Notes

Reaction equation

[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]#[N:20])[C:3]=1I.CN(C)C=O.[CH2:27]([O:30][CH3:31])[C:28]#[CH:29]>C(N(CC)CC)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]#[N:20])[C:3]=1[C:29]#[C:28][CH2:27][O:30][CH3:31]

Participants

Conditions

Temperature: 70 °C

Procedure

To a stirred solution of 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)4-iodopyrazole (200 mg, the compound of Example A1) in triethylamine (2 ml) and dimethylformamide (1 ml) at room temperature was added methyl propargyl ether (0.5 ml), cuprous iodide (15 mg) and bis(triphenylphosphine)palladium(II) chloride (30 mg). The reaction mixture was heated at 70° C. for two hours. The reaction mixture was partitioned between ether (50 ml) and aqueous citric acid solution (50 ml, 20%). The organic layer was separated, washed with water, dried (MgSO4) and evaporated. The residue was purified by column chromatography on silica gel eluted with dichloromethane to provide the title compound as a pale yellow solid m.p. 210° C. decomp.

Workup

customThe reaction mixture was partitioned between ether (50 ml) and aqueous citric acid solution (50 ml, 20%)
customThe organic layer was separated
washwashed with water
dry with materialdried (MgSO4)
customevaporated
customThe residue was purified by column chromatography on silica gel
washeluted with dichloromethane

Sources & evidence

ORD record: ord-50126c9e17ab42efb1bde0dfba61ad4e
Source dataset: uspto-grants-2001_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06255333B1

Reaction notes

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