反应详情

A mixture of 4-{1-[(3R)-3-(3,4-dimethoxyphenoxy)-3-phenylpropyl]-4-piperidinyl}aniline (5.31 mg, 0.0119 mmol), isobutyryl chloride (2.08 mg, 0.019 mmol), N,N-diisopropylethylamine (8.40 mg, 0.0650 mmol) in methylene chloride (1.0 mL) was stirred at room temperature for 24 hours. The reaction mixture was concentrated and chromatographed using a preparative TLC plate [2.5% of NH3 (2.0 M in methanol) in CHCl3] to give the product (3.5 mg, 56.5%) as a thick oil: 1H NMR (400 MHz, CDCl3) δ 7.38 (d, 1H, J=8.6 Hz), 7.30–7.20 (m, 4H), 7.20 (m, 1H), 7.11 (d, 2H, J=8.6 Hz), 7.04 (s, 1H), 6.57 (d, 1H, J=8.3 Hz), 6.44 (d, 1H, J=2.6 Hz), 6.22 (dd, 1H, J=2.6, 8.3 Hz), 5.09 (apparent dd, 1H, J=4.4, 8.1 Hz), 3.72 (s, 3H), 3.70 (s, 3H), 3.08 (m, 2H), 2.57 (m, 2H), 2.43 (apparent sept, partially hidden, 2H, J=6.8 Hz), 2.30–2.10 (m, 6H), 1.80 (m, 2H), 1.25 (d, 6H, J=7.9 Hz); ESMS m/e: 517.3 (M+H)+.

1. concentrationThe reaction mixture was concentrated
2. customchromatographed