2-Methyl-7-phenylpyrazolo[1,5-a]pyrimidin-5-amine → N-(2-methyl-7-phenylpyrazolo[1,5-a]pyrimidin-5-yl)-2-(pyridin-4-yl)cyclopropanecarboxamide

HRID 1256408Notes

Reaction equation

HRID 1256408 reaction equation
[N:1]1[CH:6]=[CH:5][C:4]([CH:7]2[CH2:9][CH:8]2[C:10](Cl)=[O:11])=[CH:3][CH:2]=1.[CH3:13][C:14]1[CH:29]=[C:17]2[N:18]=[C:19]([NH2:28])[CH:20]=[C:21]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)[N:16]2[N:15]=1>N1C=CC=CC=1>[CH3:13][C:14]1[CH:29]=[C:17]2[N:18]=[C:19]([NH:28][C:10]([CH:8]3[CH2:9][CH:7]3[C:4]3[CH:5]=[CH:6][N:1]=[CH:2][CH:3]=3)=[O:11])[CH:20]=[C:21]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)[N:16]2[N:15]=1

Participants

4

Reactant 2

HCID 582071812-Methyl-7-phenylpyrazolo[1,5-a]pyrimidin-5-amineHCID 767027172-(Pyridin-4-yl)cyclopropanecarbonyl chloride

Product 1

HCID 67064769N-(2-methyl-7-phenylpyrazolo[1,5-a]pyrimidin-5-yl)-2-(pyridin-4-yl)cyclopropanecarboxamide

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

In a round-bottomed flask was 2-(pyridin-4-yl)cyclopropanecarbonyl chloride (7D, 190 mg, 1.05 mmol) added in Pyridine (2 mL) to give a yellow suspension. 2-methyl-7-phenylpyrazolo[1,5-a]pyrimidin-5-amine (10A, 213 mg, 0.951 mmol) was added portionwise at 0° C. The temperature was slowly raised to room temperature. The reaction was quenched with saturated sodium bicarbonate and partitioned between ethyl acetate and water. The separated organic layer was dried over Mg2SO4, filtered, and concentrated under reduced pressure (3×100 mL). The reaction mixture was filtered and purified by preparatory, 5-95% (10 mM NH4HCO3 (aq)/10 mM NH4HCO3 in 20/80 (v/v) H2O/MeCN). Received 9 mg (3%) of yellow solid. 1H NMR (DMSO-d6) δ: 11.32 (s, 1H), 8.46 (d, J=6.1 Hz, 2H), 7.94-8.06 (m, 2H), 7.88 (s, 1H), 7.53-7.67 (m, 3H), 7.15-7.26 (m, 2H), 6.33 (s, 1H), 2.37 (s, 3H), 1.50-1.66 (m, 2H). ESI-MS: m/z 370.0 (M+H)+.

Workup

  1. customIn a round-bottomed flask was
  2. customto give a yellow suspension
  3. customThe reaction was quenched with saturated sodium bicarbonate
  4. custompartitioned between ethyl acetate and water
  5. dry with materialThe separated organic layer was dried over Mg2SO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure (3×100 mL)
  8. filtrationThe reaction mixture was filtered
  9. custompurified by preparatory, 5-95% (10 mM NH4HCO3 (aq)/10 mM NH4HCO3 in 20/80 (v/v) H2O/MeCN)

Sources & evidence

ORD record
ord-d8cc6483fd2e40f0b4729460b0cd380d
Source dataset
uspto-grants-2013_06
Patent number
US08461163B2

Reaction notes

Loading…