Acetic Acid → 7-Bromo-5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one

HRID 1811333Notes

Reaction equation

HRID 1811333 reaction equation
[CH2:1]([N:3]([CH2:29][CH3:30])[CH2:4][CH2:5][N:6]1[CH2:11][CH2:10][C:9]2[NH:12][C:13]([CH:16]=[C:17]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([F:26])[CH:24]=4)[NH:19][C:18]3=[O:27])=[C:14]([CH3:15])[C:8]=2[C:7]1=[O:28])[CH3:2].C(O)(=O)C.[Br:35]N1C(=O)CCC1=O.N(C(C)(C)C#N)=NC(C)(C)C#N>ClC(Cl)(Cl)Cl>[Br:35][CH:10]1[CH2:11][N:6]([CH2:5][CH2:4][N:3]([CH2:1][CH3:2])[CH2:29][CH3:30])[C:7](=[O:28])[C:8]2[C:14]([CH3:15])=[C:13]([CH:16]=[C:17]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([F:26])[CH:24]=4)[NH:19][C:18]3=[O:27])[NH:12][C:9]1=2

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 6547AzobisisobutyronitrileHCID 67184N-bromobutanimideHCID 666067185-(2-(Diethylamino)ethyl)-2-((5-fluoro-2-oxoindolin-3-ylidene)methyl)-3-methyl-1,5,6,7-tetrahydro-4H-pyrrolo[3,2-c]pyridin-4-one

Product 1

HCID 666078287-Bromo-5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-oneYield 21.5%

Reagents, catalysts & solvents 1

HCID 5943Carbon TetrachlorideSolvent

Procedure

A stirred solution of 5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one (82 mg, 0.2 mmol) prepared from Example 1 in 2 ml of tetrachloromethane was added with acetic acid (20 ml), N-bromosuccinimide (43 mg, 0.24 mmol) and azobisisobutyronitrile (2 mg, 0.012 mmol). The mixture was heated to reflux for 45 minutes, cooled down to room temperature filtered and concentrated under reduced pressure. The resulting mixture was purified by silica gel column chromatography to give the mixture (21 mg) of 7-bromo-5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one and 3-bromomethyl-5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one which was used as such.

Workup

  1. temperatureThe mixture was heated
  2. temperatureto reflux for 45 minutes
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting mixture was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-e176299825e54709ace519a00d516c7b
Source dataset
uspto-grants-2013_01
Patent number
US08362251B2

Reaction notes

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