Patents by Inventor Aldo Belli

Aldo Belli 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 the preparation of 2-(4'-nitrophenyl)-propionic acid
    Patent number: 4242524
    Abstract: The present invention concerns a process for the preparation of 2-(4'-nitrophenyl)-propionic acid of the formula (I): ##STR1## More particularly, this invention relates to a process for the preparation of 2-(4'-nitrophenyl)-propionic acid (I) starting from para-nitroethylbenzene (PNEB) by carboxylation in the presence of alkaline phenates (Na and K).The 2-(4'-nitrophenyl)-propionic acid (I) thus obtained finds a useful application as an intermediate for the preparation of chemical products.For instance, acid (I) may be hydrogenated catalytically until obtaining the corresponding amino-derivative which is then condensed with ortho-cyanobenzyl-bromides in order to give isoindoline (as described in Belgian Pat. No. 774985).
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: December 30, 1980
    Assignee: Montedison S.p.A.
    Inventors: Carlo Venturello, Rino D'Aloisio, Aldo Belli