Patents Assigned to The Alkali and Chemical Corporation of India
  • Process for the manufacture of optically active .gamma.-lactone of (1R, cis)-2, 2-dimethyl-3-hydroxymethyl-cyclopropane-1-carboxylic acid
    Patent number: 4568758
    Abstract: The optically active .gamma.-lactone of (1R, cis)-2, 2-dimethyl-3-hydroxymethyl-cyclopropane-1-carboxylic acid, which is useful as an intermediate in the production of pyrethroid insecticides, may be made from optically active (-)car-3-en-5-one by a two stage oxidation process followed by hydrolysis of the intermediate obtained.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: February 4, 1986
    Assignees: Indian Explosives Limited, The Alkali and Chemical Corporation of India, Chemicals and Fibres of India Limited
    Inventors: Arun K. Mandal, Shailendra R. Bhandari, Satish W. Mahajan