Acetyl chloride → HCID 59426296, compound

HRID 506033Notes

Reaction equation

HRID 506033 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]#[C:9][C:10]2[N:11]([CH2:23][CH3:24])[C:12]3[C:17]([C:18]=2[C:19]#[N:20])=[CH:16][CH:15]=[C:14]([O:21][CH3:22])[CH:13]=3)=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:32](Cl)(=[O:34])[CH3:33]>C1COCC1>[C:19]([C:18]1[C:17]2[C:12](=[CH:13][C:14]([O:21][CH3:22])=[CH:15][CH:16]=2)[N:11]([CH2:23][CH3:24])[C:10]=1[C:9]#[C:8][C:5]1[CH:6]=[CH:7][C:2]([NH:1][C:32](=[O:34])[CH3:33])=[CH:3][CH:4]=1)#[N:20]

Participants

5

Reactant 3

HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 11587731HCID 11587731, compound

Product 1

HCID 59426296HCID 59426296, compoundYield 99.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

2-(4-Aminophenylethynyl)-1-ethyl-6-methoxy-1H-indole-3-carbonitrile (95 mg, 0.29 mmol), prepared as described in Example 1H, is dissolved in THF (1.4 mL). Triethylamine (84 μL, 0.6 mmol) is added, followed by dropwise addition of acetyl chloride (44 μL, 0.5 mmol). This is stirred at room temperature for 1 h. The reaction mixture is partitioned between H2O and EtOAc. The organic layer is dried and concentrated. Purification by silica chromatography (9/1, CH2Cl2/EtOAc) yields N-[4-(3-cyano-1-ethyl-6-methoxy-1H-indol-2-ylethynyl)-phenyl]-acetamide (103 mg, 96%) as a yellow solid.

Workup

  1. customThe reaction mixture is partitioned between H2O and EtOAc
  2. customThe organic layer is dried
  3. concentrationconcentrated
  4. customPurification by silica chromatography (9/1, CH2Cl2/EtOAc)

Sources & evidence

ORD record
ord-663e7e9cccb74252a22c9894eb232c2c
Source dataset
uspto-grants-2010_08
Patent number
US07781478B2

Reaction notes

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