Patents by Inventor ZACHARY K. WICKENS

ZACHARY K. WICKENS 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).

  • Patent number: 9586883
    Abstract: This disclosure is directed to methods of preparing organic aldehydes, each method comprising contacting a terminal olefin with an oxidizing mixture comprising: (a) a dichloro-palladium complex; (b) a copper complex; (c) a source of nitrite; under aerobic reaction conditions sufficient to convert at least a portion of the terminal olefin to an aldehyde.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: March 7, 2017
    Assignee: California Institute of Technology
    Inventors: Zachary K. Wickens, Bill Morandi, Robert H. Grubbs, Kacper Skakuj, Sarah M. Bronner
  • Patent number: 9533928
    Abstract: The disclosure provides a dual-catalysis system for direct conversion of olefins to alcohols. The cooperative catalytic system contains one oxidizing catalyst and one transfer-hydrogenation catalyst. A wide variety of olefins, including aromatic and aliphatic olefins, can be used as the reactant. The transformation proceeds with anti-Markovnikov selectivity, and in some aspects provides primary alcohols as major products. The disclosure further provides a system for oxidation of olefins with anti-Markovnikov selectivity.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 3, 2017
    Assignee: California Institute of Technology
    Inventors: Guangbin Dong, Robert H. Grubbs, Peili Teo, Zachary K. Wickens
  • Publication number: 20150299073
    Abstract: The disclosure provides a dual-catalysis system for direct conversion of olefins to alcohols. The cooperative catalytic system contains one oxidizing catalyst and one transfer-hydrogenation catalyst. A wide variety of olefins, including aromatic and aliphatic olefins, can be used as the reactant. The transformation proceeds with anti-Markovnikov selectivity, and in some aspects provides primary alcohols as major products. The disclosure further provides a system for oxidation of olefins with anti-Markovnikov selectivity.
    Type: Application
    Filed: July 1, 2015
    Publication date: October 22, 2015
    Inventors: GUANGBIN DONG, ROBERT H. GRUBBS, PEILI TEO, ZACHARY K. WICKENS
  • Patent number: 9096519
    Abstract: The present invention is directed to methods for oxidizing internal olefins to ketones. In various embodiments, each method comprising contacting an organic substrate, having an initial internal olefin, with a mixture of (a) a biscationic palladium salt; and (b) an oxidizing agent; dissolved or dispersed in a solvent system to form a reaction mixture, said solvent system comprising at least one C2-6 carbon nitrile and optionally at least one secondary alkyl amide, said method conducted under conditions sufficient to convert at least 50 mol % of the initial internal olefin to a ketone, said ketone positioned on a carbon of the initial internal olefin. The transformation occurs at room temperature and shows wide substrate scope. Applications to the oxidation of seed oil derivatives and a bioactive natural product are described.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: August 4, 2015
    Assignee: California Institute of Technology
    Inventors: Bill Morandi, Robert H. Grubbs, Zachary K. Wickens, Michael M. Lerch
  • Patent number: 8987531
    Abstract: The present invention is directed to methods of synthesizing insect pheromones, particularly lepidopteran insect pheromones, their precursors and derivatives from inexpensive, readily available starting materials using olefin metathesis catalysis.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 24, 2015
    Assignee: California Institute of Technology
    Inventors: Robert H. Grubbs, Myles B. Herbert, Zachary K. Wickens, Vanessa M. Marx, Benjamin K. Keitz, Koji Endo
  • Publication number: 20140316149
    Abstract: This disclosure is directed to methods of preparing organic aldehydes, each method comprising contacting a terminal olefin with an oxidizing mixture comprising: (a) a dichloro-palladium complex; (b) a copper complex; (c) a source of nitrite; under aerobic reaction conditions sufficient to convert at least a portion of the terminal olefin to an aldehyde.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: ZACHARY K. WICKENS, BILL MORANDI, ROBERT H. GRUBBS, KACPER SKAKUJ, SARAH BRONNER
  • Publication number: 20140194604
    Abstract: The present invention is directed to methods for oxidizing internal olefins to ketones. In various embodiments, each method comprising contacting an organic substrate, having an initial internal olefin, with a mixture of (a) a biscationic palladium salt; and (b) an oxidizing agent; dissolved or dispersed in a solvent system to form a reaction mixture, said solvent system comprising at least one C2-6 carbon nitrile and optionally at least one secondary alkyl amide, said method conducted under conditions sufficient to convert at least 50 mol % of the initial internal olefin to a ketone, said ketone positioned on a carbon of the initial internal olefin. The transformation occurs at room temperature and shows wide substrate scope. Applications to the oxidation of seed oil derivatives and a bioactive natural product are described.
    Type: Application
    Filed: January 8, 2014
    Publication date: July 10, 2014
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Bill MORANDI, Robert H. GRUBBS, Zachary K. WICKENS
  • Publication number: 20130231499
    Abstract: The present invention is directed to methods of synthesizing insect pheromones, particularly lepidopteran insect pheromones, their precursors and derivatives from inexpensive, readily available starting materials using olefin metathesis catalysis.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 5, 2013
    Inventors: ROBERT H. GRUBBS, MYLES B. HERBERT, ZACHARY K. WICKENS, VANESSA M. MARX