反应详情

1.74 g (0.63 mmole) of the chromene obtained in Example 7 were hydrogenated in 30 ml of methanol at room temperature and under atmospheric pressure using 0.15 g of a supported catalyst comprising 10% by weight of Pd on active charcoal, in the course of 16 hours. Conventional working up gave the above compound, in 97% yield, as white crystals of melting point 102°-106° C.

1. customin the course of 16 hours
2. customConventional working up gave the above compound