Methyl iodide → N-(3-{1-[4-(3,4-Dimethylphenyl)-4-oxobutyl)-4-piperidinyl}phenyl)-N,2-dimethylpropanamide

Participants

Reaction Conditions

Reaction Steps

A mixture of N-(3-{1-[4-(3,4-dimethylphenyl)-4-oxobutyl]-4-piperidinyl}phenyl)-2-methylpropanamide (15.0 mg, 0.0357 mmol), MeI (5.07 mg, 0.0357 mmol), NaOtBu (6.86 mg, 0.0714 mmol) and THF (1.00 mL) was stirred for 5 h at 25° C. The resulting crude mixture was diluted with water (10 mL), the aqueous layer was extracted with CH2Cl2 (3×20 mL). The combined organic layers were concentrated in vacuo and the residue was purified by preparative TLC using 4.0% of NH3 (2.0 M in methanol) in CH2Cl2 to afford the desired product N-(3-{1-[4-(3,4-dimethylphenyl)-4-oxobutyl]-4-piperidinyl}phenyl)-N,2-dimethylpropanamide (13.8 mg, 89.1%): 1H NMR (400 MHz, CDCl3) 7.76 (s, 1H), 7.72 (dd, 1H, J=1.8, 7.7 Hz), 7.33 (t, 1H, J=8.8 Hz), 7.22 (d, 1H, J=7.8 Hz), 7.18 (d, 1H, J=8.8 Hz), 7.01 (m, 2H), 3.24 (s, 3H), 3.10 (d, 1H, J=10.6 Hz), 3.00 (t, 1H, J=7.6 Hz), 2.49–2.44 (m, 4H), 2.33 (s, 6H), 2.112.10 (m, 2H), 1.99 (m, 1H), 1.79–1.77 (m, 4H), 1.26 (t, 2H, J=7.6 Hz), 1.02 (d, 6H, J=7.6 Hz); ESMS m/e: 435.2 (M+H)+.

Provenance & Evidence