Sodium Carbonate → HCID 12085902, compound

HRID 1860293Notes

Reaction equation

HRID 1860293 reaction equation
Br/[C:2](/[C:12]1[CH:17]=[CH:16][C:15]([F:18])=[CH:14][CH:13]=1)=[C:3](\[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)/[CH2:4][CH3:5].[CH:19]([C:21]1[CH:26]=[CH:25][C:24](B(O)O)=[CH:23][CH:22]=1)=[O:20].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>[CH:19]([C:21]1[CH:26]=[CH:25][C:24](/[C:2](/[C:12]2[CH:17]=[CH:16][C:15]([F:18])=[CH:14][CH:13]=2)=[C:3](\[C:6]2[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=2)/[CH2:4][CH3:5])=[CH:23][CH:22]=1)=[O:20]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 5910734-Formylphenylboronic AcidHCID 12085901HCID 12085901, compound

Product 1

HCID 12085902HCID 12085902, compoundYield 92.6%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Procedure

To a solution of the bromide 3 (2.0 g, 6.54 mmol) in DME (30 mL) was added 4-formylbenzene boronic acid (1.37 g, 9.11 mmol), tetrakis(triphenylphosphine)palladium(0) (800 mg, 0.7 mmol), and 2N aqueous sodium carbonate(4.8 mL, 9.6 mmol). After refluxing overnight the solvent was removed under reduced pressure and the residue was chromatographed (silica gel, 5% EtOAc/hexanes) to give the aldehyde (4) as a white solid (2.0 g, 92%): 1 H NMR (CDCl3) δ 9.83 (m, 1 H), 7.52 (d, J=8.4 Hz, 2 H), 7.15 (m, 11 H), 2.49 (q, J=7.3 Hz, 2 H), 0.94 (t, J=7.3 Hz, 3 H); APcI m/z: 372 (M+H+CH3CN+, 100%).

Workup

  1. temperatureAfter refluxing overnight the solvent
  2. customwas removed under reduced pressure
  3. customthe residue was chromatographed (silica gel, 5% EtOAc/hexanes)

Sources & evidence

ORD record
ord-b31e0ba5113a41208d3ecf0769d6384d
Source dataset
uspto-grants-2003_03
Patent number
US06528681B2

Reaction notes

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