94639-17-5Relevant articles and documents
Simple isomer separation of 4,6-disubstituted 2-thioxo-1,2-dihydro-pyridine-3-carbonitriles being formed in the reaction of asymmetrically substituted 1,3-diketones with cyanothioacetamide
Vieweg,Wagner
, p. 51 - 52 (2007/10/02)
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CYCLIZATION OF NITRILES. XXXIV. TRANSFORMATION OF 4-ARYL-2,6-DIAMINO-3,5-DICYANO-4H-THIOPYRANS INTO SUBSTITUTED 4-ARYL-3-CYANO-2(1H)-PYRIDINETHIONES AND 2-AMINO-4-ARYL-7,7-DIMETHYL-5-OXO-3-CYANO-5,6,7,8-TETRAHYDRO-4H-BENZOPYRANS
Sharanin, Yu. A.,Shestopalov, A. M.
, p. 1196 - 1200 (2007/10/02)
The reaction of 2,6-diamino-3,5-dicyano-4H-thiopyrans with monocarbonyl and acyclic 1,3-dicarbonyl compounds leads to the elimination of malononitrile and the formation of substituted 4-aryl-3-cyano-2(1H)-pyridinethiones.The reaction with 1,3-cycloalkanediones leads to the elimination of cyanothioacetamide and the formation of 2-amino-4-aryl-3-cyano-4H-benzopyrans.
CYCLIZATION OF NITRILES. XIII. 2,2-DIALKYL-4-AMINO-6-ARYL-5-CYANO-1,3-DITHIA-4-CYCLOHEXENES IN THE SYNTHESIS OF 4-ARYL-3-CYANOPYRIDINE-2(1H)-THIONES AND THEIR HETEROCYCLIC TRANSFORMATION PRODUCTS
Sharanin, Yu. A.,Shestopalov, A. M.,Promonenkov, V. K.
, p. 1837 - 1844 (2007/10/02)
2,2-Dialkyl-4-amino-6-aryl-5-cyano-1,3-dithia-4-cyclohexenes were obtained in the reaction of 2,2-propane- and 2,2-butanedithiols with arylidenemalononitrile.As a result of recyclization they formed substituted 4-aryl-3-cyanopyridine-2(1H)-thiones.The synthesized compounds were used in the synthesis of various 3-aminothienopyridines and some of their derivatives.