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Carbon Subsulphide, 2-Aminopyridine, N-Phenylbenzamidine, ß-Aminocrotonate Carbon subsulphide, C3S2, reacts with 2-aminopyridine (la) and N-phenylbenzamidine (lb) to yield the corresponding higher condensed derivatives 4 and 7. Attempts to obtain mesoionic compounds by reaction of N-substituted 2-aminopyridines or N,N'-disubsti-tuted benzamidines were not successful. Efforts to yield a pyridinethione derivative by reaction of C3S2 with /?-aminocrotonate (lc) failed. In this case the sulphur-bridged compound 8 could be isolated.

Zur Chemie des Kohlensubsulfids, III 1 Formation of Pyrimidinthiones / Chemistry of Carbon Subsulphide, III 1 Formation of Pyrimidinthiones