Patents Assigned to CHON Corporation
  • Trans-N-acyl-N-alkyl-1-amino-1,3-butadienes and trans-N-acyl-N-aryl-1-amino-1,3,-butadienes
    Patent number: 4179572
    Abstract: Trans-N-acyl-N-alkyl-1-amino-1,3-butadienes are prepared by contacting a conjugated azomethine with a strong base in an inert organic solvent at sub-zero temperature and thereafter acylating the resulting product. The trans-N-acyl-N-alkyl-1-amino-1,3-butadienes are useful as intermediates in the formation of substituted decahydro-quinolines, Pumiliotoxin C, and can also be used as the diene in Diels-Alder reactions or can be copolymerized with vinyl compounds.
    Type: Grant
    Filed: September 21, 1977
    Date of Patent: December 18, 1979
    Assignee: CHON Corporation
    Inventor: Wolfgang Oppolzer
  • Manufacture of 2-(alkyl, alkenyl or alkynyl) 3-carbalkoxyalkyl ketones from alpha, beta-unsaturated ketones
    Patent number: 4143230
    Abstract: The copper enolate of 3-allylcyclopentanone is alkylated with an alkyne so as to form the 2-alkynyl, 3-allylcyclopentanone which is then subjected to ozonolysis and oxidative cleavage to form 2-alkynylcyclopentan-3-one-1-yl alkylcarboxlic acid. The acid can be esterified to form a 2-alkynyl-3-carbalkoxyalkyl ketone which, in turn, can be hydrogenated to convert the alkynyl moiety to alkenyl or alkyl moieties. The procedure is particularly useful in the synthesis of methyl dl-jasmonate, dehydrojasminate and dihydrojasmonate.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: March 6, 1979
    Assignee: CHON Corporation
    Inventors: Andrew E. Greene, Pierre Crabbe
  • Trans-N-acyl-N-alkyl-1-amino-1,3-butadienes, trans-N-acyl-N-aryl-1-amino-1,3-butadienes and preparation thereof
    Patent number: 4105853
    Abstract: Trans-N-acyl-N-alkyl-1-amino-1,3-butadienes are prepared by contacting a conjugated azomethine with a strong base in an inert organic solvent at sub-zero temperature and thereafter acylating the resulting product. The trans-N-acyl-N-alkyl-1-amino-1,3-butadienes are useful as intermediates in the formation of substituted decahydro-quinolines, Pumiliotoxin C, and can also be used as the diene in Diels-Alder reactions or can be copolymerized with vinyl compounds.
    Type: Grant
    Filed: September 21, 1977
    Date of Patent: August 8, 1978
    Assignee: CHON Corporation
    Inventor: Wolfgang Oppolzer
  • Trans-N-acyl-N-alkyl-1-amino-1,3-butadienes, trans-N-acyl-N-aryl-1-amino-1,3-butadienes and preparation thereof
    Patent number: 4065496
    Abstract: Trans-N-acyl-N-alkyl-1-amino-1,3-butadienes are prepared by contacting a conjugated azomethine with a strong base in an inert organic solvent at sub-zero temperature and thereafter acylating the resulting product. The trans-N-acyl-N-alkyl-1-amino-1,3-butadienes are useful as intermediates in the formation of substituted decahydro-quinolines, Pumiliotoxin C, and can also be used as the diene in Diels-Alder reactions or can be copolymerized with vinyl compounds.
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: December 27, 1977
    Assignee: CHON Corporation
    Inventor: Wolfgang Oppolzer