Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-06-27
1980-09-16
Gantz, Delbert E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C 1710
Patent
active
042229677
ABSTRACT:
A process for brominating fluorine- and chlorine-containing halogenated hydrocarbons of formula (I) ##STR1## wherein R.sub.1 represents hydrogen, fluorine, chlorine, bromine, lower alkyl, or at least partially fluorinated lower alkyl; R.sub.2 represents hydrogen, fluorine, chlorine, or bromine; and, R.sub.3 represents fluorine or perfluorinated lower alkyl, to form the corresponding compounds of formula (II) ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above is disclosed. According to this process, compounds of formula (I) are reacted in gaseous form at relatively mild reaction conditions, e.g., reaction temperatures of between 100.degree.-500.degree. C. with hydrogen bromide in the presence of a catalyst comprising at least one component selected from the group consisting of
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Boehm Horst
Hellberg Karl-Heinz
Boska Joseph A.
Gantz Delbert E.
Kali-Chemie AG
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