Studies of the structural peculiarities and chemical changes of carbazole and of some of its derivatives

Oxidation of the corresponding 3, 6-diacetylcarbazoles gives 9-n-butyl- and 9-isoamylcarbazole-3, 6-dicarboxylic acids. 9-Alkylcarbazole-3, 6-dicarboxylic acids are converted to acid chlorides, which are esterified with allyl alcohol without being isolated pure. Allyl 9-ethyl-, 9-n-butyl- and 9-isoamylcarbazole-3, 6-dicarboxylates are synthesized. The ability of these esters to polymerize and to undergo copolymerization with methyl mercaptan is demonstrated with the example of diallyl 9-ethylcarbazole-3, 6-dicarboxylate.For Part XII see 8].