Synthesis of 2-thioxo-1,2-dihydropyridine and 1,2,3,6-tetrahydropyridin-6-thione by heterocyclization of 3-amino-N-phenyl-2-butenthioamide with 2-substituted acetonitriles von A. N. Borisevich, L. S. Samojlenko, V. N. Britsun, A. N. Chernega, M. O. Lozinskij

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