4-Acetylpyridine → 5-Pyridin-4-yl-7-trifluoromethyl-pyrazolo[1,5-a]pyrimidine-3-carbonitrile

HRID 2054232Notes

Reaction equation

HRID 2054232 reaction equation
[N:1]1[CH:6]=[CH:5][C:4]([C:7](=O)[CH2:8][C:9](=O)[C:10]([F:13])([F:12])[F:11])=[CH:3][CH:2]=1.C(C1C=CN=CC=1)(=O)C.[NH2:25][C:26]1[C:30]([C:31]#[N:32])=[CH:29][NH:28][N:27]=1>>[N:1]1[CH:6]=[CH:5][C:4]([C:7]2[CH:8]=[C:9]([C:10]([F:13])([F:12])[F:11])[N:27]3[N:28]=[CH:29][C:30]([C:31]#[N:32])=[C:26]3[N:25]=2)=[CH:3][CH:2]=1

Participants

4

Reactant 3

HCID 142824-AcetylpyridineHCID 2382984,4,4-Trifluoro-1-(pyridin-4-yl)butane-1,3-dioneHCID 178510443HCID 178510443, compound

Product 1

HCID 508528495-Pyridin-4-yl-7-trifluoromethyl-pyrazolo[1,5-a]pyrimidine-3-carbonitrileYield 38%

Procedure

Reaction of 1-pyridin-4-yl-4,4,4-trifluoro-butane-1,3-dione (217 mg, 1.0 mmol), prepared from commercially available 4-acetylpyridine according to general procedure A, and 3-amino-4-cyano-pyrazole (108 mg, 1.0 mmol) according to general procedure B yielded the title compound as a light yellow solid (110 mg, 38%). MS (ISP) 289.8 [(M+H)+]; mp 233° C.

Sources & evidence

ORD record
ord-d2996406277542b783b247344967c9b0
Source dataset
uspto-grants-2008_02
Patent number
US07329662B2

Reaction notes

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