Patents Represented by Attorney Harold Haidt
  • Patent number: 3944621
    Abstract: A process for the preparation of a mixture of compounds of the structure ##SPC1##Is disclosed whereby a Pi-halotricyclene having the structure ##SPC2##Where Y is chloro, bromo or iodo is reacted with an alkali metal cyanide to prepare the corresponding nitrile; the nitrile is reacted with diisobutylaluminum hyhdride to prepare the corresponding aldehyde, a nortricycloekasantalal which is then condensed with butanone to prepare the above mentioned mixture of compounds. Also claimed are the product ketones which are useful for altering the aroma of consumable products including perfumes, perfume compositions and perfumed articles.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: March 16, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja Dulal Mookherjee, Venkatesh Kamath, Edward J. Shuster
  • Patent number: 3942537
    Abstract: Processes for altering the flavors of consumable products, including foodstuffs and tobaccos, which comprise adding thereto a small but effective amount of at least one oxocyclic pyrimidine having the formula ##SPC1##Wherein R.sub.1 is alkyl, halogen or hydrogen and R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different and are hydrogen or alkyl; flavoring and flavor-enhancing compositions containing such oxocyclic pyrimidines; and novel oxocyclic pyrimidines and processes for the preparation of such oxocyclic pyrimidines.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: March 9, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: William J. Evers, Joseph Sieczkowski
  • Patent number: 3940499
    Abstract: Processes and compositions are described for the use in foodstuff flavor and aroma and as foodstuff aroma imparting materials of 2,2,6-trimethyl-1-cyclohexen-1-ylacetaldehyde.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: February 24, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Alan Owen Pittet, Erich Manfred Klaiber, Manfred Hugo Vock, Edward J. Shuster, Joaquin Vinals
  • Patent number: 3933863
    Abstract: 3-Furyl beta-chalcogenalkyl sulfides having the structure: ##SPC1##Wherein X is a chalcogen selected from the group consisting of oxygen and sulfur; R.sub.2 and R.sub.3 are each selected from the group consisting of methyl and hydrogen, at least one of R.sub.2 or R.sub.3 being methyl; and R.sub.4 and R.sub.5, taken separately, are each methyl, or R.sub.4 and R.sub.
    Type: Grant
    Filed: January 21, 1975
    Date of Patent: January 20, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: William J. Evers, Igor A. Pelse, Manfred Hugo Vock
  • Patent number: 3931306
    Abstract: A method for producing mixtures containing greater than 50% cis 2-methyl-3-pentenoic acid comprising first reacting methyl acetylene with a methyl magnesium halide to form a methylacetylene magnesium halide Grignard reagent; then reacting the methyl acetylene magnesium halide Grignard reagent with acetaldehyde to form a 3-pentyn-2-ol magnesium halide salt; then hydrolyzing the magnesium halide salt to form 3-pentyn-2-ol; then halogenating the 3-pentyn-2-ol to form a 4-halo-2-pentyne; then reacting magnesium with the 4-halo-2-pentyne to produce a 4-magnesium halo-2-pentyne Grignard reagent; then reacting the 4-magnesium halo-2-pentyne Grignard reagent with carbon dioxide to form a magnesium halo-carboxylate salt mixture of compounds having the structures: ##EQU1## (wherein X is halogen); then hydrolyzing the magnesium halo-carboxylate salt mixture to form a mixture of carboxylic acids having the structures: ##EQU2## then hydrogenating the aforementioned mixture of carboxylic acids to form a mixture containing
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: January 6, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: John B. Hall, Manfred Hugo Vock, Joaquin Vinals, Edward J. Shuster
  • Patent number: 3931293
    Abstract: Methods for producing cis-alkyl-2-methyl-3-pentenoates and isomeric mixtures containing high proportions (greater than 50%) of cis C.sub.2 -C.sub.6 alkyl-2-methyl-3-pentenoates.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: January 6, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ching Y. Tseng, John B. Hall, Manfred Hugo Vock, Joaquin F. Vinals, Edward J. Shuster
  • Patent number: 3931270
    Abstract: Process for producing 3-thia substituted alkane 1,4 diones comprising the steps of:I. Providing a 2-ene-1,4 dione having the structure: ##SPC1##Ii. Intimately admixing said 2-ene-1,4 dione with a sulfur compound having the formula:R.sub.3 SHthereby providing a substituted or sunsubstituted 2-thia substituted alkane 1,4 dione having the structure: ##SPC2##WhereinR.sub.3 is selected from the group consisting of acyl and royl, wherein R.sub.2 is lower alkyl; and wherein R.sub.1, R.sub.4 and r.sub.6 are the same or different and are selected from the group consisting of hydrogen and lower alkyl; wherein when R.sub.1 is hydrogen, the reaction (ii) is carried out in the presence of an organic base; and wherein when R.sub.1 is lower alkyl, the reaction (ii) is carried out in the absence of catalyst. Examples of such organic bases are piperidine, pyridine, triethyl amine, quinoline or alpha-picoline.
    Type: Grant
    Filed: January 7, 1975
    Date of Patent: January 6, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: William J. Evers, Bernard J. Mayers