Patents Assigned to Apsinterm LLC
  • Method of preparing amine stereoisomers
    Patent number: 7332610
    Abstract: This invention provides intermediates useful in a method of preparing amine stereoisomers. It also provides a method of preparing sulfoxide and sulfinylamine stereoisomers using certain of the intermediates.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: February 19, 2008
    Assignee: Apsinterm LLC
    Inventors: Zhengxu Han, Dhileepkumar Krishnamurthy, Chris Hugh Senanayake, Zhi-Hui Lu
  • Methods of preparing sulfinamides and sulfoxides
    Patent number: 7064214
    Abstract: This invention encompasses novel methods of preparing sulfinamides and sulfoxides, particularly stereomerically pure sulfinamides and sulfoxides. The invention further encompasses novel compounds from which sulfinamides and sulfoxides can be prepared.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 20, 2006
    Assignee: Apsinterm LLC
    Inventors: Chris Hugh Senanayake, Zhengxu Han, Dhileepkumar Krishnamurthy, Derek Pflum, Harold Scott Wilkinson