Process for the preparation of 1-naphthol mixed ethers and...

Details Process for the preparation of 1-naphthol mixed ethers and... Process for the preparation of 1-naphthol mixed ethers and...

2006-10-13

2009-06-30

Dentz, Bernard (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07553978

ABSTRACT:
The invention relates to a process for the preparation of duloxetine (1a), comprising the reaction between 1-fluoronaphthalene and 3-N,N-dimethylamino-1-(2-thienyl)-propan-1-ol in the presence of 1,3-dimethyl-2-oxo-hexahydropyrimidine (DMPU) as the solvent; a method for the identification of duloxetine enantiomers and for the determination of its optical purity is also disclosed.

REFERENCES:
patent: 0 273 658 (1990-10-01), None

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