Patents by Inventor Petri J. Hukka

Petri J. Hukka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5166437
    Abstract: An improved process for the preparation of fluoxetine. The invention is concerned with an improved process for the preparation of the antidepressant, fluoxetine hydrochloride, or N-methyl-3-(p-trifluoromethylphenoxy)-3-phenylpropylamine hydrochloride, by simultaneous debenzylation and catalytic hydrogenation of 2-benzoyl-1-(N-benzyl-N-methyl)ethylamine base with the aid of Pd/C, Pt/C or Pd-Pt/C at a hydrogen pressure of 5 bar at 50.degree. C. with ethyl acetate as a solvent to obtain 1-phenyl-3-(N-methylamino)-propan-1-ol. This compound is then selectively etherified with 1-chloro-4-trifluoromethylbenzene in N-methylpyrrolidone at 80.degree. C. in the presence of potassium t-butoxide to form N-methyl-3-(p-trifluoromethylphenoxy)-3-phenylpropylamine, or fluoxetine base, which is transformed in a known manner to fluoxetine hydrochloride, or N-methyl-3-(p-trifluoromethylphenoxy)-3-phenylpropylamine hydrochloride. The yield of fluoxetine hydrochloride is 85-87% of the theoretical.
    Type: Grant
    Filed: November 23, 1990
    Date of Patent: November 24, 1992
    Assignee: Orion-Yhtyma Oy
    Inventors: Pekka J. Kairisalo, Petri J. Hukka, Anitta H. Jarvinen