Patents by Inventor Hisao Equchi

Hisao Equchi 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: 7521581
    Abstract: A catalyst composition for a cross-coupling reaction comprising a nickel salt-amine complex of formula (1), and triphenylphosphine. where R1 thru R4 independently represent alkyl, aryl, heteroaryl or alkenyl; n is an integer of 1-6; and X independently represents halo, hydroxyl, nitrate or acetate group. Using the catalyst composition, a cross-coupling reaction is carried out between a boron-containing compound of formula (2) and a compound of formula (3). where R5 and R6 are the same as R1-R4 defined above; Y independently represents hydroxyl or alkoxy, Z is halo, methanesulfonate or trifluoromethanesulfonate.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: April 21, 2009
    Assignee: Tosoh Corporation
    Inventors: Shinichi Ishikawa, Hiroshi Awano, Hirokazu Yano, Hisao Equchi
  • Publication number: 20060224011
    Abstract: A catalyst composition for a cross-coupling reaction comprising a nickel salt-amine complex of formula (1), and triphenylphosphine. where R1 thru R4 independently represent alkyl, aryl, heteroaryl or alkenyl; n is an integer of 1-6; and X independently represents halo, hydroxyl, nitrate or acetate group. Using the catalyst composition, a cross-coupling reaction is carried out between a boron-containing compound of formula (2) and a compound of formula (3). where R5 and R6 are the same as R1-R4 defined above; Y independently represents hydroxyl or alkoxy, Z is halo, methanesulfonate or trifluoromethanesulfonate.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 5, 2006
    Inventors: Shinichi Ishikawa, Hiroshi Awano, Hirokazu Yano, Hisao Equchi