C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/653.4, 260/5
C07C 25/13 (2006.01) C07C 47/55 (2006.01)
Patent
CA 1248969
NOVEL TRIFLUOROMETHYL BENZAL CHLORIDES AND PROCESS FOR THE PREPARATION THEREOF ABSTRACT Novel meta- and para-trifluoromethyl benzal chlorides and ring-halogenated derivatives are useful chemical intermediates for the preparation of meta- and para-trifluoromethyl benzaldehydes and various other useful end products. The novel compounds can be prepared from readily-available xylene starting materials in a process comprising (a) chlorinating meta- or para-xylene, or a ring-halogenated meta- or para-xylene, to form a trichloromethyl benzal chloride product and (B) reacting the trichloromethyl benzal chloride product with about 3 moles or less of anhydrous hydrogen fluoride in the presence of a halogen exchange catalyst.
389124
Bierenbaum R. Simon
Tang David Y.
Occidental Chemical Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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