Title:
HALOGENATION METHOD IN SOLVENT AND NEW BISTRIFLUOROMETHYL-POLYFLUOROALKOXYBENZENES
Document Type and Number:
Japanese Patent JP2719296
Kind Code:
B2
Abstract:
PURPOSE: To enable a wide range of halogenation in specified solvents without using carbon tetrachloride having toxicity and volatility.
CONSTITUTION: Halogenation reactions are carried out in solvents that are compds. of formula I (R is F, Cl, CF3, CF2H, CF2Cl, CHFCF3, CF2CF3 or CFClF3; Hal is F or Cl; (a) is 0-3; (b) is 0-2; (c) is 0 or 1-3 when Hal is F, (c) is 0 or 1 when Hal is Cl; a=b≠0 and a+b+c≤6]. This method is suitable for the chlorination of hydrocarbon, halogenohydrocarbon, alkyl ether and/or halogenoalkyl type hydrogen atoms of an arom. compd. contained in a side chain. Chlorine-free bistrifluoromethylpolyfluoroalkoxybenzenes of formula II (R' is F, CF3, CF2H, CHFCF3 or CF2CF3) included in the compds. of the formula I are new compds.
Inventors:
Albrecht Malholt
Application Number:
JP12041093A
Publication Date:
February 25, 1998
Filing Date:
April 26, 1993
Export Citation:
Assignee:
Bayer Actien Gezershyaft
International Classes:
C07B37/04; C07B39/00; C07C37/62; C07C39/27; C07C41/22; C07C43/225; (IPC1-7): C07C43/225; C07B39/00; C07C41/22
Domestic Patent References:
| JP6212758A | ||||
| JP5064246A |
Other References:
【文献】米国特許2516403(US,A)
Attorney, Agent or Firm:
Heiyoshi Odashima