Water → 2-(4'-Carboxy-biphenyl-3-yl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester

HRID 1801239Notes

Reaction equation

HRID 1801239 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[C:8]2[C:13](=[CH:14][CH:15]=1)[NH:12][CH:11]([C:16]1[CH:21]=[CH:20][CH:19]=[C:18](Br)[CH:17]=1)[C:10]([CH3:24])([CH3:23])[CH2:9]2)=[O:5])[CH3:2].[C:25]([C:28]1[CH:33]=[CH:32][C:31](B(O)O)=[CH:30][CH:29]=1)([OH:27])=[O:26].C(=O)([O-])[O-].[Na+].[Na+].O>O1CCOCC1.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[C:8]2[C:13](=[CH:14][CH:15]=1)[NH:12][CH:11]([C:16]1[CH:17]=[C:18]([C:31]3[CH:32]=[CH:33][C:28]([C:25]([OH:27])=[O:26])=[CH:29][CH:30]=3)[CH:19]=[CH:20][CH:21]=1)[C:10]([CH3:24])([CH3:23])[CH2:9]2)=[O:5])[CH3:2]

Participants

8

Reactant 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 3121834-Carboxyphenylboronic AcidHCID 674428312-(3-Bromo-phenyl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester

Product 1

HCID 674416662-(4'-Carboxy-biphenyl-3-yl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl esterYield 80%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

To a mixture of 2-(3-bromo-phenyl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (4.0 g, 10.3 mmol), 4-carboxyphenylboronic acid (2.5 g, 15.4 mmol) and tetrakis(triphenylphosphine)palladium(0) (1.2 g, 1.1 mmol) in dioxane (10 mL) was added 2 M sodium carbonate solution in water (10 mL, 20 mmol). The resulting mixture was subjected to microwave irradiation for 60 min at 110° C. The mixture was diluted with ethyl acetate (150 mL), washed with saturated aqueous sodium bicarbonate solution (30 mL×2), brine, dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by flash silica gel chromatography (silica gel from QingDao, 200-300 mesh, glass column from Shanghai SD company) (10% ethyl acetate/hexanes) afforded 2-(4′-carboxy-biphenyl-3-yl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (3.4 g, 80%) as a white solid: LC/MS m/e calcd for C27H27NO4 (M+H)+: 430.52, observed: 430.1.

Workup

  1. customirradiation for 60 min at 110° C
  2. washwashed with saturated aqueous sodium bicarbonate solution (30 mL×2), brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customPurification by flash silica gel chromatography (silica gel from QingDao, 200-300 mesh, glass column from Shanghai SD company) (10% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-f842cbf2a7c2436cbfa0e8dce937102c
Source dataset
uspto-grants-2013_01
Patent number
US08344137B2

Reaction notes

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