Lead diacetate → 5-(2-Diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5-dihydro-pyrrolo[3,2-c]pyridine-4-one

HRID 1811335Notes

Reaction equation

HRID 1811335 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.[Pb+2].C([O-])(=O)C.[OH-].[Na+]>C(O)(=O)C>[CH2:29]([N:3]([CH2:1][CH3:2])[CH2:4][CH2:5][N:6]1[CH:11]=[CH: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])[CH3:30]

Participants

5

Reactant 3

HCID 9317Lead diacetateHCID 14798Sodium HydroxideHCID 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 666073095-(2-Diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5-dihydro-pyrrolo[3,2-c]pyridine-4-oneYield 42.6%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

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 (150 mg, 0.37 mmol) obtained from Example 1 in 4 ml of acetic acid was added with lead acetate (160 mg, 0.37 mmol) in an ice-water bath the control the temperature at 15° C. Upon the completion of the addition, the mixture was stirred at room temperature for 3 hours. The reaction mixture was added with 1N sodium hydroxide (60 ml) and extracted with five to one solvent mixture of dichloromethane, methanol (40 ml×4). The combined organic extracts were washed with brine (50 ml) and water (50 ml), dried with anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by HPLC to give 5-(2-diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5-dihydro-pyrrolo[3,2-c]pyridin-4-one (64 mg, 42.6%) as a yellow solid.

Workup

  1. additionUpon the completion of the addition
  2. extractionextracted with five to one solvent mixture of dichloromethane, methanol (40 ml×4)
  3. washThe combined organic extracts were washed with brine (50 ml) and water (50 ml)
  4. dry with materialdried with anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by HPLC

Sources & evidence

ORD record
ord-6f4f6c2e7bbb4a3096007161a9f01ca0
Source dataset
uspto-grants-2013_01
Patent number
US08362251B2

Reaction notes

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