Dichloromethane → Methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(3,3-dimethylbutyl)amino]-2-fluorobenzoate

Participants

Reaction Conditions

Reaction Steps

Methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2-fluorobenzoate (800 mg, 1.93 mmol) was dissolved in DCE (15 mL), then 3,3-dimethyl-butyraldehyde (289 mg, 2.89 mmol) was added followed by sodium triacetoxyborohydride (Aldrich, 1224 mg, 5.78 mmol) and the resulting mixture stirred at 70° C. for 2 h. Reaction was allowed to cool down, dichloromethane (40 mL) was added and the organic layer was washed twice with H2O and once with brine, dried over MgSO4, filtered and concentrated under reduced pressure. Purification on silicagel afforded 541 mg (56%) of the title compound as a colorless oil. HPLC, Rt: 6.42 min, purity: 98.3%); LC/MS, M+(ESI): 500.4; 1H NMR (CDCl3) δ: 7.44 (m, 4H), 7.17 (m, 5H), 6.93 (t, J=9.6 Hz, 1H), 6.73 (m, 1H), 4.46 (s, 2H), 3.88 (s, 3H), 3.40 (m, 2H), 2.60 (t, J=7.7 Hz, 2H), 1.70-1.46 (m, 4H), 1.34 (m, 2H), 0.99-0.87 (m, 12H).

Provenance & Evidence