反应详情

温度

0 °C

A solution of 1-(hydroxymethyl)-3,4-dihydro-1H-isochromene-5-carbonitrile (0.16 g, 0.85 mmol) in 4 mL of DCM was added Dess-Martin reagent (0.72 g, 1.7 mmol) in one portion at 0° C. The mixture was stirred at 0° C. for 1 hour, and then stirred at rt. Overnight. The reaction mixture was filtered and the filtrate was concentrated to give 1-formyl-3,4-dihydro-1H-isochromene-5-carbonitrile. 1H-NMR (400 MHz, CDCl3) δ 9.71 (s, 1H), 7.93˜7.95 (in, 1H), 7.64˜7.68 (m, 1H), 4.99 (s, 1H), 4.03˜4.09 (m, 2H), 2.99˜3.04 (m, 2H).

1. stirringstirred at rt
2. customOvernight
3. filtrationThe reaction mixture was filtered
4. concentrationthe filtrate was concentrated