Potassium Carbonate → N-{5-[3-(2-Chloro-4-pyrimidinyl)pyrazolo[1,5-a]pyridin-2-yl]-2-methylphenyl}-2,2,2-trifluoroacetamide

HRID 1157632Notes

Reaction equation

HRID 1157632 reaction equation
[Cl:1][C:2]1[N:7]=[C:6]([C:8]#[C:9][C:10]2[CH:11]=[CH:12][C:13]([CH3:23])=[C:14]([NH:16][C:17](=[O:22])[C:18]([F:21])([F:20])[F:19])[CH:15]=2)[CH:5]=[CH:4][N:3]=1.[I-].[NH2:25][N+:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[Cl:1][C:2]1[N:7]=[C:6]([C:8]2[C:9]([C:10]3[CH:11]=[CH:12][C:13]([CH3:23])=[C:14]([NH:16][C:17](=[O:22])[C:18]([F:19])([F:20])[F:21])[CH:15]=3)=[N:25][N:26]3[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=23)[CH:5]=[CH:4][N:3]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 2733704Pyridinium, 1-amino-, iodide (1:1)HCID 57737211N-{5-[(2-Chloro-4-pyrimidinyl)ethynyl]-2-methylphenyl}-2,2,2-trifluoroacetamide

Product 1

HCID 57737231N-{5-[3-(2-Chloro-4-pyrimidinyl)pyrazolo[1,5-a]pyridin-2-yl]-2-methylphenyl}-2,2,2-trifluoroacetamideYield 56%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of N-{5-[(2-chloro-4-pyrimidinyl)ethynyl]-2-methylphenyl}-2,2,2-trifluoroacetamide (2.7 g, 8 mmol) in DMF (50 mL) was added N-aminopyridinium iodide (3.6 g, 16 mmol) and K2CO3 (3.3 g, 24 mmol). After 3 h, the reaction was diluted with water and extracted with DCM. The combined organic solutions were dried over MgSO4 and concentrated onto silica gel. The crude material was purified by column chromatography. Fractions containing product were concentrated and the solid triturated with DCM and hexanes to give 1.92 g of the desired product (56%). 1H NMR (400 MHz, d6-DMSO) δ 11.07 (s, 1H), 8.89 (d, J=6.8 Hz, 1H), 8.45 (d, J=6.8 Hz, 1H), 8.40 (d, J=8.8 Hz, 1H), 7.65-7.61 (m, 1H), 7.55 (s, 1H), 7.52-7.49 (m, 1H), 7.45 (d, J=8.0 Hz, 1H), 7.22-7.19 (m, 1H), 7.08 (d, J=5.6 Hz, 1H), 2.27 (s, 3H) ppm.

Workup

  1. extractionextracted with DCM
  2. dry with materialThe combined organic solutions were dried over MgSO4
  3. concentrationconcentrated onto silica gel
  4. customThe crude material was purified by column chromatography
  5. additionFractions containing product
  6. concentrationwere concentrated
  7. customthe solid triturated with DCM and hexanes

Sources & evidence

ORD record
ord-3293a1a2ca844a82b545db644a5bd3de
Source dataset
uspto-grants-2010_10
Patent number
US07807673B2

Reaction notes

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