Lithium hydroxide, monohydrate → HCID 22323721, compound

Participants

Reaction Steps

To a solution of 10.0 mg (0.025 mmol) of ethyl 4-[2-(1,1-dimethyl-3-(4-methylphenyl)-5-indenyl)ethynyl]benzoate (Compound 47) in 0.5 ml THF/H2O (3:1 v/v) was added 5.2 mg (0.12 mmol) LiOH H2O. After stirring at room temperature for 48 hours the solution was extracted with hexanes and the aqueous layer was acidified with saturated aqueous NH4Cl. Solid NaCl was added and the resulting mixture extracted with EtOAc. The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure to give the title compound as a colorless solid. 1H NMR (300 MHz, d6 -DMSO): δ 7.95 (2H, d, J=8.3 Hz), 7.65 (2H, d, J=8.3 Hz), 7.57 (2H, m), 7.49 (3H, m), 7.30 (2H, d, J=7.9 Hz), 6.61 (1H, s), 2.36 (3H, s), 1.36 (6H, s).

Provenance & Evidence