Patents by Inventor Rajendra P. Singh

Rajendra P. Singh 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).

  • SUBSTITUTED PHENYLSULFUR TRIFLUORIDE AND OTHER LIKE FLUORINATING AGENTS
    Publication number: 20080039660
    Abstract: Novel substituted phenylsulfur trifluorides that act as fluorinating agents are disclosed. Also disclosed are methods for their preparation and methods for their use in introducing one or more fluorine atoms into target substrate compounds. Finally, various intermediate compounds for use in preparing substituted phenylsulfur trifluorides are provided.
    Type: Application
    Filed: July 25, 2007
    Publication date: February 14, 2008
    Applicant: IM&T RESEARCH, INC.
    Inventors: TERUO UMEMOTO, RAJENDRA P. SINGH
  • Stereocontrolled synthesis of serricornin
    Patent number: 5817882
    Abstract: Serricornin, the attractant pheromone of the cigarette beetle, is synthesized in high enantiomeric and diastereomeric purity via a series of reactions of asymmetric 2-(1-haloalkyl)-1,3,2-dioxaborolanes with Grignard reagents, which lead to the key intermediate ?,S-(R*,R*,R*)!-2-ethyl-3,5-dimethyl-l-octen-6-ol. Oxidative cleavage of the carbon-carbon double bond of ?S-(R*,R*,R*)!-2-ethyl-3,5-dimethyl-l-octen -6-ol with osmium tetroxide and sodium periodate yields serricornin.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: October 6, 1998
    Assignee: Washington State University Research Foundation
    Inventors: Donald S. Matteson, Rajendra P. Singh