Diisopropylethylamine → 1-{4-[3-(2,2-Dimethylpyrrolidin-1-yl)propoxy]phenyl}cyclohexanecarbonitrile

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反応手順

A (1:3) mixture of 1-[4-(3-bromo-propoxy)-phenyl]-cyclohexanecarbonitrile and 1-[4-(3-chloro-propoxy)-phenyl]-cyclohexanecarbonitrile (150 mg, 0.54 mmol), N,N-diisopropylethylamine (188 μL, 1.08 mmol) and 2,2-dimethyl-pyrrolidine (131 mg, 1.08 mmol) in NMP (0.5 mL) was heated at 180° C. in the microwave (Smith Personal Synthesiser) for 600 seconds. The reaction mixture was quenched with water (15 mL) and extracted with ethyl acetate (2×15 mL), dried over Na2SO4, filtered and concentrated in vacuo. The compound was purified by column chromatography on Biotage® silica gel, eluting with dichloromethane:methanol:ammonia, 98:2:0.2 to 95:5:0.5 to give the title compound as a brown oil (31 mg, 17%). 1H NMR (400 MHz, CDCl3) δ7.38 (d, 2H), 6.90 (d, 2H), 4.04 (t, 2H), 2.78 (t, 2H), 2.54 (t, 2H), 2.16-2.12 (m, 2H), 1.94 (pentet, 2H), 1.90-1.64 (m, 11H), 1.20-1.34 (m, 1H), 0.98 (s, 6H); HRMS (ESI+) 341.2588 (M+H)+.

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