Patents Represented by Attorney Donald L. Johnston

Find this attorney in the Justia Lawyer Directory

  • Chloroacetonitrile synthesis
    Patent number: 4476059
    Abstract: A 2-hydroxyacetonitrile is reacted with thionyl chloride in the presence of a trialkylamine and a suitable solvent to form a 2-chloroacetonitrile. In a preferred embodiment of the invention, 2-chloropropionitrile is prepared by reacting lactonitrile with an excess of thionyl chloride in the presence of triethylamine and dichloromethane.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: October 9, 1984
    Assignee: Ethyl Corporation
    Inventor: Robert I. Davidson