Main > ORGANIC CHEMICALS > Aromatics > Halogen-Fluorine Exchange Reaction > Catalyst > Amidophosphonium Salt. Compn

Product DE. A. No. 2

PATENT ASSIGNEE'S COUNTRY Germany
UPDATE 12.00
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS A process for prepg F-contg compds (Fluorobenzaldehyde & Fluorobenzonitriles) which comprises reacting a compd contg > one halogen atom which can be replaced by F with a fluoride of formula
- KAT.F
where KAT is an alkali metal ion, NH4 ion, an alkaline earth metal ion or ABCDN; where A-D are, independently of one another, identical or different & are each 1-12C straight-chain or branched alkyl or alkenyl, 4-8C cycloalkyl, 6-12C aryl or 7-12C aralkyl, in the presence of mixt of compds
- Amidophosphonium salt of formula
[(EF)N][(GH)N][(IJ)N][(KL)N]P cation . M anion; where E-L
are independently of one another, identical or different &
are each 1-12C straight-chain or branched alkyl or alkenyl
4-8C cycloalkyl, 6-12C aryl, 7-12C aralkyl, or EF, GH, IJ, KL
are, independently of one another, identical or different &
are bound to one another either directly or via O or N-R
to form a ring having 3-7 ring atoms & R = 1-4C alkyl & M is
monovalent acid anion or the equiv. of a polyvalent acid
anion &
- Compd selected from (IVa) X-NO2; (IVb) X-SO-X'; where
X,X' are 6-18C aryl, 5-18C aryloxy or arylthio, 7-12C aralkyl
or R'R''R'''C; where R',R'',R''' = 1-12C alkyl or alkenyl; 4-8C
cycloalkyl
in the presence or absence of solvent at 40-260C
PATENT PHOTOCOPY Available on request

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