Title:
DI- OR TRIFLUOROMETHOXYPHENYLKETONE AND MANUFACTURE
Document Type and Number:
Japanese Patent JPS58188833
Kind Code:
A
Abstract:
A process for the preparation of di- or trifluoromethoxyphenyl ketones or di- or trifluoromethylthiophenyl ketones, characterized in that, in a first stage, a di- or trihalomethoxybenzene or a di- or trihalomethylthiobenzene is reacted with a trihalomethylated aromatic or aliphatic compound in the presence of boron trifluoride in an amount such that the absolute pressure of boron trifluoride within the reaction vessel exceeds 1 bar, and in the presence of hydrofluoric acid as a solvent and in that, in a second stage, the product of the first stage is hydrolyzed. The resultant products are useful as intermediates in the synthesis of compounds having a pharmaceutical or phytosanitary (e.g., herbicidal) activity.
Inventors:
MISHIERU DEBOWA
Application Number:
JP11088282A
Publication Date:
November 04, 1983
Filing Date:
June 29, 1982
Export Citation:
Assignee:
RHONE POULENC SPEC CHIM
International Classes:
B01J27/00; C07B31/00; C07B41/06; C07B61/00; C07C45/00; C07C45/43; C07C45/46; C07C49/84; C07C67/00; C07C201/00; C07C205/45; C07C255/56; C07C313/00; C07C319/20; C07C323/22; (IPC1-7): B01J27/12; C07B29/00; C07C45/00; C07C45/43; C07C49/84; C07C65/32; C07C79/36; C07C87/50; C07C121/34; C07C149/32
Attorney, Agent or Firm:
Motohiro Kurauchi
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