Process for making .beta.-bromocitraconic anhydride

Details Process for making .beta.-bromocitraconic anhydride Process for making .beta.-bromocitraconic anhydride

1973-06-12

1977-03-22

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30760

Patent

active

040136833

ABSTRACT:
The title compound is made by the direct bromination of citraconic anhydride in the vapor phase at 200.degree.-500.degree. C. with a contact time of less than about 20 seconds. The reactants are preferably diluted with an inert solvent, such as a halogenated hydrocarbon and/or a gaseous diluent, such as N.sub.2.

REFERENCES:
beilsteins Handbuch der Organischen Chemie, 4th Ed., vol. 17, p. 441 (system no. 2476), Verlag von Julius Springer, Berlin Germany, 1933.

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