Patent Number: 6,294,676

Title: Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran herbicides and intermediates useful therein

Abstract: The present invention provides compounds of formula I and processes for the preparation and purification thereof. ##STR1## Compounds of formula I are useful as intermediates in the manufacture of 6-(arylcarbonyl)-4-oximino-dihydrobenzothiopyran herbicidal agents.

Inventors: Doehner, Jr.; Robert Francis (East Windsor, NJ), Drabb; Thomas Walter (Trenton, NJ), Brigance; Robert Paul (Levittown, PA)

Assignee: American Cyanamid Company

International Classification: C07C 323/00 (20060101); C07C 323/61 (20060101); C07D 409/00 (20060101); C07D 409/06 (20060101); C07D 335/00 (20060101); C07D 335/06 (20060101); C07D 231/10 (); C07D 335/04 (); C07C 321/00 ()

Expiration Date: 09/25/2018