反应详情

In 18 ml of 1,2-dichloroethane was dissolved 475 mg of the Compound (73) obtained in Example 73. The solution was heated for 5 hours under reflux. The solvent was evaporated off, and the residue was subjected to a column chromatography using Florisil, followed by elution with hexaneethyl acetate (5:1) to give 370 mg of the subject Compound (74) as a pale yellow oily product.

1. temperatureThe solution was heated for 5 hours
2. temperatureunder reflux
3. customThe solvent was evaporated off
4. washfollowed by elution with hexaneethyl acetate (5:1)