Characterization and determination of benzalmalonitriles using infrared, nuclear magnetic resonance and mass spectrometry

Absorption and emission spectroscopic investigation of cyanovinyldiethylaniline dye vapors

“…The aniline (styryl) dyes 4-dicyanovinyl-N,N-diethylaniline (DCVA, 4-diethylamino-p,P-dicyanostyrene [ 1 ], p-diethylaminobenzolmalonitrile [2]) and 4-tricyanovinyl-N,N-diethylaniline (TCVA, 4-diethyiamino-a,p,p-tricyanostyrene [ 1 ]) belong to the dipolar meropolymethine group [ 3 ]. Their structural formulae are shown in figs.…”

Chemistry, Biochemistry, Pharmacology, and Toxicology of CS and Synthesis of Its Novel Analogs

“…The NMR spectra of the benzylidene malononitrile have been described. 66 The chemical shift of the a-proton of the CS-type compounds appears to vary from 7.8 to 8.8 ppm, depending on the nature and position of the substituent on the aromatic ring. Thus, the signal due to 'H (a-proton of CS) appears at 8.51 ppm in DMSO, 66 while Mesilaakso observed it at 8.26 ppm in CDC1 3 .…”

“…66 The chemical shift of the a-proton of the CS-type compounds appears to vary from 7.8 to 8.8 ppm, depending on the nature and position of the substituent on the aromatic ring. Thus, the signal due to 'H (a-proton of CS) appears at 8.51 ppm in DMSO, 66 while Mesilaakso observed it at 8.26 ppm in CDC1 3 . 67 The a-proton has been shown to couple with the ring-hydrogens, 67 and its chemical shifts depend on the solvents and the nature of substituents on the aromatic ring.…”

Saturable absorption dynamics of a cyanovinyl-diethylaniline dye

“…They are used as sublimable dyes in heat-transfer recording materials [4,5] and photoconductive recording materials [6]. They act as cytotoxic agents against tumors [7], as X-ray protective agents [8], and as photostabilizers in plastics against ultraviolet radiation [2].…”

“…Dicyanovinyl-dialkylaniline dyes [1][2][3] (=di-alkylamino-dicyanostyrenes=dialkylamino-benzylidene malonitriles) and tricyanovinyl-dialkylaniline dyes [ 1 ] (=dialkylamino-tricyanostyrenes) are applied for coloring synthetic polymer fibers [ 1 ]. They are used as sublimable dyes in heat-transfer recording materials [4,5] and photoconductive recording materials [6].…”