Patents by Inventor Attilio Trebbi

Attilio Trebbi 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).

  • Process for preparing 1-(3,5-dimethoxy-4-hydroxy phenyl)-2-(N-methylamino) ethanol hydrochloride
    Patent number: 4408074
    Abstract: A process for preparing 1-(3,5-dimethoxy-4-hydroxy phenyl)-2-(N-methylamino) ethanol hydrochloride is described by reacting 2,6-dimethoxyphenol with anhydrous chloral in the presence of a catalyst, hydrolyzing 1-(3,5-dimethoxy-4-hydroxyphenyl)2,2,2-trichloro ethanol and subsequently isolating the 3,5-dimethoxy-4-hydroxyphenyl glyoxal thus obtained; finally, this compound, in the form of the bisulfite, is directly converted to the desired product by amination with methylamine in the presence of hydrogen with a hydrogenation catalyst and the final product is converted into the hydrochloride.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: October 4, 1983
    Assignee: Dr. Lo. Zambeletti S.p.A.
    Inventors: Massimo Signorini, Attilio Trebbi, Luigi Molteni