Patents by Inventor Richard Craig Larock

Richard Craig Larock 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).

  • Butenolide synthesis via carbonylation of vinylmercurials in the presence of inorganic salts
    Patent number: 4119642
    Abstract: Compounds containing the butenolide ring have a wide variety of chemical uses. The invention is an improved method of synthesizing .beta.-halobutenolides which are valuable intermediates in preparing a variety of butenolide ring containing compounds. The method comprises reacting an acetylenic alcohol with a mercuric halide to provide a vinylmercuric halide and carbonylating the vinylmercuric halide in the presence of a basic inorganic salt to provide a .beta.-halobutenolide.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: October 10, 1978
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Richard Craig Larock
  • Method of synthesis of pi-allyl-palladium compounds
    Patent number: 4065479
    Abstract: Pi-allyl-palladium compounds are prepared by reacting a vinylmercuric salt with an olefin and a palladium (II) salt.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: December 27, 1977
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Richard Craig Larock
  • Synthesis of .alpha.,.beta.-unsaturated carboxylic acids and esters
    Patent number: 4052423
    Abstract: .alpha.,.beta.-Unsaturated carboxylic acids and esters have a wide variety of chemical uses. The invention is a method of synthesizing .alpha.,.beta.-unsaturated carboxylic acids and esters which, with regard to the esters, comprises reacting a vinylmercuric halide with carbon monoxide in an alcohol to provide an .alpha.,.beta.-unsaturated carboxylic acid ester. With regard to the acids per se, the method comprises reacting a vinylmercuric halide with carbon monoxide, in the presence of a water containing polar organic solvent to provide an .alpha.,.beta.-unsaturated carboxylic acid.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: October 4, 1977
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Richard Craig Larock
  • Symmetrical conjugated diene and polyene synthesis via vinylmercuric salts
    Patent number: 4026957
    Abstract: Vinylmercuric halide salts undergo reaction with palladium (II) dimerization promoting agents, preferably in a highly polar organic solvent at low temperatures to provide essentially quantative yields of conjugated dienes. Importantly, the reaction is stereospecific and is especially valuable for synthesis of functionally substituted dienes and symmetrical polyenes.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: May 31, 1977
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Richard Craig Larock
  • Butenolide synthesis via carbonylation of vinylmercurials
    Patent number: 4010170
    Abstract: Compounds containing the butenolide ring have a wide variety of chemical uses. The invention is a method of synthesizing .beta.-halobutenolides which are valuable intermediates in preparing a variety of butenolide ring containing compounds. The method comprises reacting an acetylenic alcohol with a mercuric halide to provide a vinylmercuric halide and carbonylating the vinylmercuric halide to provide a .beta.-halobutenolide.
    Type: Grant
    Filed: September 24, 1975
    Date of Patent: March 1, 1977
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Richard Craig Larock