Hydrochloric Acid → 7-(4-Hydroxy-2-methylphenyl)-3-(3-(1-naphthyloxy)propyl)-1h-indole-2-carboxylic acid

Participants

Reaction Steps

To a mixture of EXAMPLE 43A (50 mg) and 4-bromo-3-methylphenol (22 mg) in THF (2 mL) was added tris(dibenzylideneacetone)dipalladium(0) (4.6 mg), and tri-tert-butylphosphine tetrafluoroborate (1.45 mg). The mixture was stirred at ambient temperature overnight and partitioned between ethyl acetate (150 mL) and water (50 mL). The extract was washed with brine, dried over sodium sulfate, and filtered. The filtrate was concentrated, and the concentrate was loaded on a silica gel cartridge and eluted with ethyl acetate (5%) in hexanes to provide a product which was dissolved in THF (2 mL), methanol (1 mL) and water (1 mL) and hydrolyzed with LiOH (100 mg) overnight. The mixture was acidified with 5% aqueous HCl and extracted with ethyl acetate. The exteact was washed with water and brine and dried (Na2SO4), filtered and concentrated. The concentrate was purified by reverse phase HPLC as described in Example 1D. 1H NMR (300 MHz, CDCl3) δ 8.39 (d, 1H), 8.35 (d, 1H), 7.77 (d, 1H), 7.72 (dd, 1H), 7.13-7.50 (m, 6H), 6.85 (d, 1H), 6.76 (t, 2H), 4.21 (t, 2H), 3.47 (t, 2H), 2.38 (m, 2H), 2.13 (s, 3H).

Provenance & Evidence