反应详情

To a solution of 1.2 g. of 3-(1,2-dimethylheptyl)-5,6,7,8-tetrahydro-1-hydroxy-6,9-dimethylxanthene in 20 ml. of dry pyridine is added 8.0 g. of acetic anhydride. The solution is stirred at 25° for 24 hours, then concentrated in vacuo. The residue is dissolved in water and extracted with hexane. The extract is washed with water until neutral, then dried and evaporated to give the title compound.

1. concentrationconcentrated in vacuo
2. dissolutionThe residue is dissolved in water
3. extractionextracted with hexane
4. washThe extract is washed with water until neutral,
5. customthen dried
6. customevaporated