Oxalyl chloride → HCID 57876395, compound

HRID 710765Notes

Reaction equation

HRID 710765 reaction equation
[Cl:1][C:2]1[CH:10]=[CH:9][C:8]2[N:7]([CH2:11][C:12]([OH:14])=O)[C:6]3[CH2:15][CH2:16][N:17]([CH3:19])[CH2:18][C:5]=3[C:4]=2[CH:3]=1.C(Cl)(=O)C(Cl)=O.[C:26]([N:29]1[CH2:34][CH2:33][NH:32][CH2:31][CH2:30]1)(=[O:28])[CH3:27]>ClCCl.CN(C1C=CN=CC=1)C>[C:26]([N:29]1[CH2:34][CH2:33][N:32]([C:12](=[O:14])[CH2:11][N:7]2[C:8]3[CH:9]=[CH:10][C:2]([Cl:1])=[CH:3][C:4]=3[C:5]3[CH2:18][N:17]([CH3:19])[CH2:16][CH2:15][C:6]2=3)[CH2:31][CH2:30]1)(=[O:28])[CH3:27]

Participants

6

Reactant 3

HCID 65578Oxalyl chlorideHCID 837951-AcetylpiperazineHCID 59161636HCID 59161636, compound

Product 1

HCID 57876395HCID 57876395, compoundYield 12%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of 2-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)acetic acid (125 mg, 0.45 mmol) and oxalyl chloride (2 ml) in dichloromethane (6.0 ml) was stirred at 25 deg C. for 3 h. The reaction mixture was concentrated to dryness. The resulting crude was dissolved in dichloromethane (6.0 ml) and DMAP (64 mg, 0.52 mmol) was added followed by addition of acetyl piperazine (56 mg, 0.43 mmol). The resulting mixture was stirred at 25 deg C. for 14 h. The solvent was removed in vacuo and purified by reverse-phase chromatography (C-18, 500 mm×50 mm, Mobile Phase A=0.05% TFA in water, B=0.05% TFA in acetonitrile, Gradient: 10% B to 80% B in 30 min, injection vol. 5 mL) to obtain 20 mg of 1-(4-Acetyl-piperazin-1-yl)-2-(8-chloro-2-methyl-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-ethanone as trifluoroacetic acid salt.

Workup

  1. concentrationThe reaction mixture was concentrated to dryness
  2. dissolutionThe resulting crude was dissolved in dichloromethane (6.0 ml)
  3. stirringThe resulting mixture was stirred at 25 deg C
  4. waitfor 14 h
  5. customThe solvent was removed in vacuo
  6. custompurified by reverse-phase chromatography (C-18, 500 mm×50 mm, Mobile Phase A=0.05% TFA in water, B=0.05% TFA in acetonitrile, Gradient: 10% B to 80% B in 30 min, injection vol. 5 mL)

Sources & evidence

ORD record
ord-b431fb5b35884cf9a1827b3fa744935e
Source dataset
uspto-grants-2015_11
Patent number
US09181240B2

Reaction notes

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