Acetyl chloride → HCID 22037230, compound

HRID 1790368Notes

Reaction equation

HRID 1790368 reaction equation
Cl.[NH:2]1[CH2:7][CH2:6][CH:5]([C:8]2[NH:12][N:11]=[C:10]([C:13]3[CH:18]=[CH:17][C:16]([Cl:19])=[CH:15][CH:14]=3)[C:9]=2[C:20]2[CH:25]=[CH:24][N:23]=[CH:22][CH:21]=2)[CH2:4][CH2:3]1.[C:26](Cl)(=[O:28])[CH3:27]>CN(C)C1C=CN=CC=1>[C:26]([N:2]1[CH2:3][CH2:4][CH:5]([C:8]2[NH:12][N:11]=[C:10]([C:13]3[CH:14]=[CH:15][C:16]([Cl:19])=[CH:17][CH:18]=3)[C:9]=2[C:20]2[CH:25]=[CH:24][N:23]=[CH:22][CH:21]=2)[CH2:6][CH2:7]1)(=[O:28])[CH3:27]

Participants

4

Reactant 2

HCID 6367Acetyl chlorideHCID 22037252HCID 22037252, compound

Product 1

HCID 22037230HCID 22037230, compound

Reagents, catalysts & solvents 1

HCID 142844-(Dimethylamino)pyridineCatalyst

Procedure

To a stirred suspension of 5-(4-piperidyl)-4-(4-pyridyl)-3-(4-chlorophenyl)pyrazole hydrochloride (Example C-74) (1 g, 2.4 mmol) in 24 mL of CH2Cl, was added 4-dimethylamino pyridine (0.88 g, 7.2 mmol) and acetyl chloride (0.21 g, 2.6 mmol). The solution was stirred for 3 h and the solvent was removed under reduced pressure. The residue was treated with saturated NH2OH (20 mL) and the suspension was extracted with ethyl acetate (3×30 mL). The combined extracts were washed with brine (1×50 mL), dried over MgSO4, filtered and concentrated to leave a solid. The solid was triturated with ether and was filtered to leave the title compound: MS (M+H): 381 (base peak).

Workup

  1. customthe solvent was removed under reduced pressure
  2. additionThe residue was treated with saturated NH2OH (20 mL)
  3. extractionthe suspension was extracted with ethyl acetate (3×30 mL)
  4. washThe combined extracts were washed with brine (1×50 mL)
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto leave a solid
  9. customThe solid was triturated with ether
  10. filtrationwas filtered

Sources & evidence

ORD record
ord-3c18face392345ea9efa734606e357f7
Source dataset
uspto-grants-2006_07
Patent number
US07071198B1

Reaction notes

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