Azo dyestuffs from benzene diazo component fused to an aliphatic ring
申请人:Bayer Aktiengesellschaft
公开号:US04189427A1
公开(公告)日:1980-02-19
Azo dyestuffs of the formula ##STR1## wherein X.sub.1 and X.sub.2 denote alkyl, cycloalkyl, aralkyl or aryl or conjointly form the remaining members of a fused non-aromatic carbocyclic ring system, X.sub.3 denotes hydrogen, alkyl, aralkyl or aryl and K represents the radical of a coupling component as well as their preparation and use for dyeing and printing synthetic fibre materials.
Elgemeie, Galal Eldin Hamza; Elzanate, Ali M.; Mansour, Abdel Kader, Journal of the Chemical Society. Perkin transactions I, 1992, # 8, p. 1073 - 1074
作者:Elgemeie, Galal Eldin Hamza、Elzanate, Ali M.、Mansour, Abdel Kader
DOI:——
日期:——
Novel [4 + 2] Cycloaddition Reaction of Aryl-Methylidenemalononitriles to Unsaturated Chalcogen Amides. Synthesis, Structure, and Properties of Triethylammonium 3,5,5-Tricyano-1,4,5,6-Tetrahydropyridine-2-Selenolates and -Thiolates
作者:K. A. Frolov、V. V. Dotsenko、S. G. Krivokolysko、E. O. Kostyrko
DOI:10.1007/s10593-013-1378-y
日期:2013.12
Reaction of arylmethylidenemalononitriles with 3-aryl-2-cyanoprop-2-eneselenoamides in the presence of Et3N gave triethylammonium 4,6-diaryl-3,5,5-tricyano-1,4,5,6-tetrahydropyridine-2-selenolates. A similar reaction with cyclohexylidenecyanothioacetamide yields triethylammonium 4-aryl-1,5,5-tri-cyano-3-azaspiro[5.5]undec-1-ene-2-thiolate. Alkylation of the obtained selenolates and thiolates gives 6-(alkylseleno)-2,4-diaryl-1,4-dihydropyridine-3,3,5(2H)-tricarbonitriles and 4-(alkylthio)-2-aryl-3-aza- spiro[5.5]undec-4-ene-1,1,5-tricarbonitriles, respectivelly. The structure of 2,4-di(2-furyl)-6-[2-(4-methylphenyl)-2-oxoethyl]seleno}-1,4-dihydropyridine-3,3,5(2H)-tricarbonitrile has been confirmed by the X-ray structural analysis.
MIREK, JULIAN;MILART, PIOTR, Z. NATURFORSCH. B, 41,(1986) N 11, C. 1471-1478