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I. V. Barinov, V. A. Chertkov

Decarboxylation of the Acids of the 4-Phenyl-4H-cyclopenta[c]cinnoline Series

Abstract

Decarboxylation of the 4-phenyl-4H-cyclopenta[c]cinnoline-1-carboxylic acid 7 in boililing xylene yields 4-phenyl-4H-cyclopenta[c]cinnoline 2. Decarboxylation of the acids substituted in position 3 depends on the nature of the substituents. Decarboxylation of the chloroacid proceeds by similar way, the bromoacid yields rearranged bromide – 1-brom-4-phenyl-4H-cyclopenta[c]cinnoline, whereas the acid with 3-COCF3 substituent do not undergo decarboxylation.
Moscow University Chemistry Bulletin.
2003, Vol. 44, No. 5, P. 324
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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