反应详情

To a solution of ethyl 4-[(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)azo]-benzoate (Compound 46a) 16.5 mg, 0.042 mmol) in THF (2 ml) and ethanol (1 ml) was added 80.0 mg (2.00 mmol) of NaOH (2.0 ml, 1M aqueous solution). The mixture was stirred for 12 hours at room temperature, acidified with 10% HCl, and extracted with EtOAc. The combined organic layers were washed with water, and saturated aqueous NaCl, then dried over MgSO4. Removal of the solvents under reduced pressure, and recrystallization of the residue from EtOAC/hexane, afforded the title compound as a red solid. 1H NMR (acetone-d6): δ8.19 (2H, d, J=8.4 Hz), 7.92 (2H, d, J=8.5 hz), 7.88 (2H, dd, J=2.1, 6.1 Hz), 7.66 (1H, s), 7.64 (2H, d, J=2.3 Hz), 7.28 (4H, d, J=3.0 Hz), 6.09 (1H, t, J=2.5 Hz), 2.42 (2H, d, J=4.8 Hz), 2.39 (3H, s), 1.40 (6H, s).

1. extractionextracted with EtOAc
2. washThe combined organic layers were washed with water, and saturated aqueous NaCl
3. dry with materialdried over MgSO4
4. customRemoval of the solvents
5. customunder reduced pressure, and recrystallization of the residue from EtOAC/hexane