Patents Examined by B. Mark Clardy
  • Benzothioxepanone and benzothioxepane thione compounds
    Patent number: 5817835
    Abstract: Novel benzothioxepanone and benzothioxepane thione compounds are characterized by the formula ##STR1## wherein Z is: ##STR2## R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl, or C.sub.1 to C.sub.8 alkoxy; X and Y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring, with the proviso that when Z is ?1!, X and Y represent a fused cyclopentyl or cyclohexyl ring; and n is 0, 1, or 2. The compounds are useful as co-catalysts in the para-directed nuclear chlorination of toluene.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: October 6, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka