Patents by Inventor Felix Sanchez Alonso

Felix Sanchez Alonso 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 5 pyridyl pyridine-2 (1H)-ones
    Patent number: 4563528
    Abstract: 5-Pyridinyl-6-R.sub.2 -3-R.sub.1 -2(1H)-pyridinones (I), where R.sub.2 is hydrogen or lower alkyl and R.sub.1 is a cyano, a carbamoyl or an amino group are prepared: by reaction of 1-R.sub.2 -1-oxo-2-pyridinyl-3-dialkylaminopropane (II) with malonamide under solid-liquid or liquid-liquid phase transfer catalysis conditions to obtain 1,2-dihydro-2-oxo-6-R.sub.2 -5-pyridinylnicotinamide (IV), or by reaction of II with cyanoacetamide under solid-liquid or liquid-liquid phase transfer catalysis conditions to obtain 1,2-dihydro-2-oxo-6-R.sub.2 -5-pyridinylnicotinonitrile (III) and partially hydrolizing III to yield IV; finally the carbamoyl group of IV is converted to amino and 1,2-dihydro-2-oxo-6-R.sub.2 -5-pyridinyl-3-aminopyridin-2-one are obtained.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: January 7, 1986
    Assignee: Fabrica De Productos Quimicos Y Farmaceuticos Abello, S.A.
    Inventors: Vicente Gomez Parra, Pedro Gonzalez Hernandez, Felix Sanchez Alonso, Tomas Torres Cebada