反应详情

To a solution of 3-(prop-1-en-2-yl)picolinonitrile in acetic acid was added 10% Pd/C. The Parr shaker bottle was evacuated/H2 purged 3×, and then shaken at 50 psi until starting material was consumed (typically <1 h). The reaction was filtered through diatomaceous earth and concentrated to yield (3-isopropylpyridin-2-yl)methanamine acetic acid salt which was used without further purification. To the crude salt in THF was added aq 1M NaOH, followed by BOC2O (2 eq). The reaction was allowed to stir at rt overnight. After ˜16 h, the reaction mixture was transferred to a seperatory funnel, diluted with EtOAc, and water, and the layers were separated. The organic layer was washed with brine, dried (MgSO4), and concentrated in vacuo to give a crude residue which was purified by chromatography on silica gel (EtOAc/hex) to afford the title compound as a clear oil. 1H NMR (CDCl3, 400 MHz) δ 8.4 (m, 1H), 7.5 (m, 1H), 7.2 (m, 1H), 4.5 (s, 2H), 3.1 (s, 1H), 1.4 (s, 9H), 1.2 (d, J=3.5 Hz, 6H)

1. customThe Parr shaker bottle was evacuated/H2
2. custompurged 3×
3. customwas consumed (typically <1 h)
4. filtrationThe reaction was filtered through diatomaceous earth
5. concentrationconcentrated