反应详情

Ethyl 6-chloro-2,3-dihydro-8-methoxycarbonyl-4-oxo-10-propyl-4H-pyrano[3,2-g]quinoline-2-carboxylate (0.405 g) was suspended in cymene (10 ml) and refluxed with Pd/C (5%, 0.200 g) for 10 hours. The whole was filtered hot, to remove the catalyst, cooled, poured into petroleum ether (40°-60°, 40 ml), to give a pale buff solid, which was chromatographed of silica, to give the title compound, (0.027 g) mp 174°-176°.

1. filtrationThe whole was filtered hot
2. customto remove the catalyst
3. temperaturecooled
4. additionpoured into petroleum ether (40°-60°, 40 ml)
5. customto give a pale buff solid, which
6. customwas chromatographed of silica