Isoquinoline-1-carboxylic acid → Ethyl (3-bromo-4-((1-isoquinolinylcarbonyl)amino)phenyl)acetate

HRID 1372719

Reaction equation

HRID 1372719 reaction equation
[C:1]1([C:11]([OH:13])=O)[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][N:2]=1.[NH2:14][C:15]1[CH:20]=[CH:19][C:18]([CH2:21][C:22]([O:24][CH2:25][CH3:26])=[O:23])=[CH:17][C:16]=1[Br:27].C1C=CC2N(O)N=NC=2C=1.CCN=C=NCCCN(C)C.Cl>CN(C=O)C.CN(C1C=CN=CC=1)C.O>[Br:27][C:16]1[CH:17]=[C:18]([CH2:21][C:22]([O:24][CH2:25][CH3:26])=[O:23])[CH:19]=[CH:20][C:15]=1[NH:14][C:11]([C:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][N:2]=1)=[O:13]

Participants

8

Reactant 4

HCID 68092Isoquinoline-1-carboxylic acidHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 19702145Ethyl 2-(4-amino-3-bromophenyl)acetate

Product 1

HCID 58778618Ethyl (3-bromo-4-((1-isoquinolinylcarbonyl)amino)phenyl)acetateYield 69%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

In DMF (15 ml) were dissolved 1-isoquinolinecarboxylic acid (1.00 g, 5.77 mmol), ethyl 4-amino-3-bromophenylacetate (1.49 g, 5.77 mmol), HOBt (0.39 g, 2.89 mmol), and DMAP (0.14 g, 1.15 mmol). To the resulting solution was added EDC HCl (1.33 g, 6.93 mmol). After stirring at 60° C. for 5 hours, the reaction mixture was cooled to room temperature. Water was added, followed by extraction with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate, and distilled under reduced pressure to remove the solvent. The residue was purified by chromatography on a silica gel column, whereby from n-hexane:ethyl acetate (4:1, v/v) eluate fractions, ethyl (3-bromo-4-((1-isoquinolinylcarbonyl)amino)phenyl)acetate (1.64 g, 69%) was obtained as a yellow solid.

Workup

  1. temperaturethe reaction mixture was cooled to room temperature
  2. extractionfollowed by extraction with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationdistilled under reduced pressure
  6. customto remove the solvent
  7. customThe residue was purified by chromatography on a silica gel column, whereby from n-hexane:ethyl acetate (4:1

Sources & evidence

ORD record
ord-4f6477460f244b1295b64770b1c2e833
Source dataset
uspto-grants-2007_01
Patent number
US07157487B2

Linked notes

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