Sodium Hydroxide → 2-Methoxy-7-(4-methoxyphenyl)naphthalene

HRID 1830611Notes

Reaction equation

HRID 1830611 reaction equation
FC(F)(F)S(O[C:7]1[CH:16]=[CH:15][C:14]2[C:9](=[CH:10][C:11]([O:17][CH3:18])=[CH:12][CH:13]=2)[CH:8]=1)(=O)=O.[CH3:21][O:22][C:23]1[CH:28]=[CH:27][C:26](B(O)O)=[CH:25][CH:24]=1.[OH-].[Na+]>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.COCCOC>[CH3:18][O:17][C:11]1[CH:12]=[CH:13][C:14]2[C:9](=[CH:8][C:7]([C:26]3[CH:27]=[CH:28][C:23]([O:22][CH3:21])=[CH:24][CH:25]=3)=[CH:16][CH:15]=2)[CH:10]=1

Participants

6

Reactant 3

HCID 14798Sodium HydroxideHCID 201262(4-Methoxyphenyl)boronic acidHCID 10892112Methanesulfonic acid, trifluoro-, 7-methoxy-2-naphthalenyl ester

Product 1

HCID 117371492-Methoxy-7-(4-methoxyphenyl)naphthaleneYield 79.7%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Procedure

A mixture of 7-methoxy-2-naphthyl trifluoromethanesulfonate (3.15 g, 10.3 mmol), 4-methoxy-phenylboronic acid (2.2 g, 14 mmol) sodium carbonate (10 mL of 2N aqueous solution), tetrakis(triphenylphosphine)palladium (0.59 g, 0.05 mmol), and 100 mL ethylene glycol dimethyl ether were heated to reflux for 8 hr. The mixture was cooled to room temperature and poured into 100 mL of 1N NaOH, The mixture was extracted with ethyl acetate (3×250 mL), washed with brine (2×100 mL), dried over magnesium sulfate, filtered, evaporation of the solvent and purification by silica chromatography (5%–10% ethyl adetate-hexanes) yielded 2.17 g (79%) of the title compound as a white solid: mp 154° C.; 1H NMR (CDCl3): δ 3.87 (3H, s), 3.94 (3H, s), 7.02 (2H, d, J=8.72 Hz), 7.13 (1H, dd, J=2.54 Hz, J=9.09 Hz), 7.18 (1H, J=2.55 Hz), 7.56 (1H, dd, J=1.82 Hz, J=8.36 Hz), 7.65 (2H, d, J=8.72 Hz), 7.74 (1H, d, J=9.09 Hz), 7.81 (1H, d, J=8.36 Hz), 7.89 (1H, d, J=1.09 Hz); MS (EI) m/z 264 (M).

Workup

  1. temperaturewere heated
  2. temperatureto reflux for 8 hr
  3. extractionThe mixture was extracted with ethyl acetate (3×250 mL)
  4. washwashed with brine (2×100 mL)
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporation of the solvent and purification by silica chromatography (5%–10% ethyl adetate-hexanes)

Sources & evidence

ORD record
ord-ac1ed3f118c64a0cb01ba41920ecb4c7
Source dataset
uspto-grants-2006_06
Patent number
US07067524B2

Reaction notes

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