×

Ammonium salts of .alpha.-ketocarboxylic acids

  • US 4,301,186 A
  • Filed: 06/28/1979
  • Issued: 11/17/1981
  • Est. Priority Date: 07/14/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. Ammonium salts of α

  • -ketocarboxylic acids corresponding to the following general formula;

    ##STR7## wherein n represents an integer of from about 1 to 4A and B are the same or different and represent hydrogen, an optionally branched and/or halogen- or methoxy-substituted C1 -C10 -alkyl radical, a C5 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"' or --COR'"'"', a C4 -C10 -heterocyclic radical containing oxygen, sulphur and/or nitrogen as a hetero atom or A and B together represent a 5-membered or 6-membered cycloaliphatic ring optionally containing oxygen or nitrogen as a hetero atom, andD represents hydrogen, halogen, --OH, --COOH, --COOR, CN, --COOH, --OR, --COR, --COR'"'"', --CCl3, an optionally branched C1 -C10 -alkyl radical, a C4 -C15 -cycloalkyl radical, a C6 -C15 -aryl radical which may optionally be substituted by --OH, --R, --OR, --SR, halogen, --NO2, --COR, --COOH, --CN, --COOR, --CONH2, --OR'"'"', --SR'"'"', or --COR'"'"' or a C4 -C10 -heterocyclic radical containing oxygen and/or nitrogen as a hetero atom,whereinR represents an optionally halogen-substituted alkyl group containing from about 1 to 6 carbon atoms andR'"'"' represents an aryl group containing from about 6 to 12 carbon atoms.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×