Patents Represented by Attorney John P. Cooper & Dunahm LLP White
  • Patent number: 5981802
    Abstract: The subject invention provides a method of preparing an allylic amine having the structure: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each independently hydrogen, halogen, cyano, nitro, linear or branched chain alkyl, aryl, etc.; wherein each alkyl or arylalkyl if present is independently unsubstituted or substituted by fluoro, cyano, nitro, linear or branched chain acyl, dialkylamino, etc.; wherein each aryl if present is independently unsubstituted or substituted by fluoro, cyano, nitro, linear or branched chain alkyl, arylmercapto, etc.; and wherein each of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 optionally is covalently bonded linking pairwise a suitable atom from each to form from 0 to about 10 rings, wherein each ring contains between about four and about twelve atoms, using disubstituted sulfur diimides prepared in situ. Also provided are methods of preparing cyclic allylic amines in which allylic double bonds are endocyclic and exocyclic.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: November 9, 1999
    Assignee: The Trustees of Columbia University in the City of New York
    Inventor: Thomas J. Katz