Acetyl chloride → HCID 18538875, compound

HRID 412946Notes

Reaction equation

HRID 412946 reaction equation
[C:1]([N:4]1[CH2:9][CH2:8][CH:7]([C:10]([N:12]([CH2:21][CH2:22][CH2:23][N:24]2[CH2:29][CH2:28][CH:27]([CH2:30][C:31]3[CH:36]=[CH:35][C:34]([NH2:37])=[CH:33][CH:32]=3)[CH2:26][CH2:25]2)[C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)=[O:11])[CH2:6][CH2:5]1)(=[O:3])[CH3:2].C(N(CC)CC)C.[C:45](Cl)(=[O:47])[CH3:46].[OH-].[Na+]>O1CCCC1>[C:1]([N:4]1[CH2:9][CH2:8][CH:7]([C:10]([N:12]([CH2:21][CH2:22][CH2:23][N:24]2[CH2:25][CH2:26][CH:27]([CH2:30][C:31]3[CH:32]=[CH:33][C:34]([NH:37][C:45](=[O:47])[CH3:46])=[CH:35][CH:36]=3)[CH2:28][CH2:29]2)[C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)=[O:11])[CH2:6][CH2:5]1)(=[O:3])[CH3:2]

Participants

6

Reactant 4

HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 14798Sodium HydroxideHCID 18538641HCID 18538641, compound

Product 1

HCID 18538875HCID 18538875, compoundYield 93%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

1-Acetyl-N-{3-[4-(4-aminobenzyl)-1-piperidinyl]propyl}-N-(3,4-dichlorophenyl}-4-piperidinecarboxamide (Example 303) (18 mg, 6.033 mmol) was dissolved in tetrahydrofuran (0.3 mL). To the solution were added triethylamine (5.0 mg, 0.050 mmol) and acetyl chloride (3.4 mg, 0.043 mmol), and the mixture was stirred at room temperature for 30 minutes. To the reaction mixture was added aqueous solution of 1N-sodium hydroxide (5 mL), and the mixture was extracted with ethyl acetate (5 mL×2). The organic layer was dried over magnesium sulfate and concentrated under reduced pressure. The concentrate was subjected to alumina column chromatography (alumina 2 g, ethyl acetate), and the desired fraction was concentrated under reduced pressure to give the titled compound (18 mg, 0.031 mmol, Yield 93%) as a colorless oily substance.

Workup

  1. extractionthe mixture was extracted with ethyl acetate (5 mL×2)
  2. dry with materialThe organic layer was dried over magnesium sulfate
  3. concentrationconcentrated under reduced pressure
  4. concentrationthe desired fraction was concentrated under reduced pressure

Sources & evidence

ORD record
ord-bb96862d3a724033ab753ae78e9b41b9
Source dataset
uspto-grants-2003_05
Patent number
US06562978B1

Reaction notes

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