Sodium Carbonate → 3-[4-(6-Phenyl-8,9-dihydro-7H-benzocyclohepten-5-yl)-phenyl]-acrylic Acid Methyl Ester

HRID 584574Notes

Reaction equation

HRID 584574 reaction equation
[CH3:1][O:2][C:3](=[O:24])[CH:4]=[CH:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][C:17]=3[CH2:16][CH2:15][CH2:14][C:13]=2Br)=[CH:8][CH:7]=1.[C:25]1(B(O)O)[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.C(=O)([O-])[O-].[Na+].[Na+]>COCCOC.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>[CH3:1][O:2][C:3](=[O:24])[CH:4]=[CH:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][C:17]=3[CH2:16][CH2:15][CH2:14][C:13]=2[C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[CH:8][CH:7]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 740638933-[4-(6-Bromo-8,9-dihydro-7H-benzocyclohepten-5-yl)-phenyl]-acrylic Acid Methyl Ester

Product 1

HCID 740638943-[4-(6-Phenyl-8,9-dihydro-7H-benzocyclohepten-5-yl)-phenyl]-acrylic Acid Methyl EsterYield 62.3%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Procedure

To a solution of the bromide (2c) (6.85 g, 17.9 mmol) in DME (125 mL) was added benzene boronic acid (3.25 g, 26.8 mmol), tetrakis(triphenylphosphine)palladium(0) (2.1 g, 1.8 mmol), and 2N aqueous sodium carbonate(13.5 mL). After refluxing overnight the solvent was removed under reduced pressure and the residue was chromatographed (silica gel, 7.5 EtOAc/hexanes to 100% EtOAc) followed by recrystalization from EtOAc to give (2d) as a white solid (4.24 g, 62%): 1H NMR (CDCl3) δ 7.58 (d, J=16.1 Hz, 1H), 7.20 (m, 10H), 6.92 (d, J=8.1 Hz, 2H), 6.85 (dd, J=7.3, 1.1 Hz, 1H), 6.32 (d, J=16.1 Hz, 1H), 3.78 (s, 3H), 2.82 (t, J=7.0 Hz, 2H), 2.40 (t, J=7.0 Hz, 2H), 2.20 (m, 2H); APcI m/z: 422 (M+H+CH3CN+, 100%).

Workup

  1. temperatureAfter refluxing overnight the solvent
  2. customwas removed under reduced pressure
  3. customthe residue was chromatographed (silica gel, 7.5 EtOAc/hexanes to 100% EtOAc)
  4. customfollowed by recrystalization from EtOAc

Sources & evidence

ORD record
ord-f12ce6fb98254b94ac689297fa840ef7
Source dataset
uspto-grants-2005_08
Patent number
US06927224B2

Reaction notes

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