反应详情

To a solution of 3-quinolin-6-ylpropanal (Step 6, 2.3 g, 0.012 mol) in chloroform (5 mL) cooled at 0° C. was added L-proline (0.4 g, 0.004 mol). To the mixture was then added N-chlorosuccinimide (1.74 g, 0.0130 mol) at 0° C. The reaction was warmed to r.t. and stirred overnight. The reaction was thick slurry. Solid was filtered and was washed with chloroform to give the pure product (2 g, 50.5%). 1H-NMR (300 MHz, CDCl3): 8.90 (dd, J=4.0, 2.0 Hz, 1H), 8.13 (d, J=8.0 Hz, 1H), 8.05 (d, J=8.4 Hz, 1H), 7.73 (s, 1H), 7.65 (dd, J=8.0, 2.0 Hz, 1H), 7.40 (dd, J=8.4, 4.0 Hz, 1H), 5.46 (d, J=9.4 Hz, 1H), 4.95 (ddd, J=9.4, 8.0, 3.1 Hz, 1H), 3.73 (dd, J=14.3, 3.1 Hz, 1H), 3.19 (dd, J=14.3, 8.0 Hz, 1H), 2.75 (s, 4H).

1. customat 0° C
2. filtrationSolid was filtered
3. washwas washed with chloroform