Title:
NOVEL MANUFACTURE OF BENZOYLUREA
Document Type and Number:
Japanese Patent JPS59184151
Kind Code:
A
Abstract:
A process for the preparation of benzoyl ureas is provided wherein the condensed intermediate formed by the reaction of a halogen-substituted nitrobenzene with a hydroxy-substituted cyclic or bicyclic compound is contacted with water, forming a solid or semi-solid which is easily isolated. Reduction of the nitro compound to the corresponding amine and subsequent carbamoylation of the amine with an isocyanate are all conducted in the same solvent.
Inventors:
JIYON KAI FUAI CHIYAN
Application Number:
JP6129584A
Publication Date:
October 19, 1984
Filing Date:
March 30, 1984
Export Citation:
Assignee:
UNION CARBIDE CORP
International Classes:
C07C67/00; C07C275/54; C07C301/00; C07C303/40; C07C311/21; C07C313/00; C07C315/04; C07C317/22; C07C323/20; C07C323/21; (IPC1-7): C07C127/22; C07C143/79; C07C145/00; C07C147/10
Domestic Patent References:
| JPS5598153A | 1980-07-25 |
Attorney, Agent or Firm:
Motohiro Kurauchi