Patent ID: 11958858
Assignee: ZHEJIANG AUSUN PHARMACEUTICAL CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 7:
8. The method for preparing Asenapine of formula I according to claim 7, characterized in that, said C5-9 alkanes is selected from n-pentane, hexane, n-hexane or n-heptane or a mixture of two or more thereof, said aromatic hydrocarbon solvents is selected from benzene, toluene, xylene, chlorobenzene, or a mixture of two or more thereof, said ester solvents is selected from ethyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, tert-butyl acetate, or a mixture of two or more thereof, said ketone solvents is selected from acetone, butanone or their mixture, said ether solvents is selected from diethyl ether, isopropyl ether, methyl tert-butyl ether, tetrahydrofuran, methyltetrahydrofuran, or a mixture of two or more thereof, said alcohol solvents is selected from methanol, ethanol, propanol, isopropanol, or a mixture of two or more thereof.