2-[2-(4-Nitrophenyl)hydrazinylidene]malononitrile
نویسندگان
چکیده
The title compound, C(10)H(8)N(8), is close to planar (r.m.s. deviation from the mean plane = 0.118 Å). In the crystal, inversion dimers linked by pairs of N-H⋯N hydrogen bonds generate R(2) (2)(12) loops.
منابع مشابه
2-(1,2,3,4-Tetrahydrophenanthren-1-ylidene)malononitrile
In the title complex, C(17)H(12)N(2), the non-aromatic six-membered ring adopts an envelope conformation. The dihedral angle between the eight-membered plane containing the malononitrile group and the aromatic system is 25.88 (4)°. The distance from the central C atom of the malononitrile group to the centroid of the n-glide-related distal aromatic ring is 3.66 Å, suggesting π-π inter-actions.
متن کاملGreen one pot solvent-free synthesis of pyrano[2,3-c]-pyrazoles and pyrazolo[1,5-a]pyrimidines.
Pyrano[2,3-c]pyrazoles are obtained via mixing ethyl acetoacetate, hydrazine hydrate, aldehydes or ketones and malononitrile in the absence of solvent. These same products were also obtained by reacting arylidenemalononitriles 3 with 3-methyl-2-pyrazolin-5-ones. NOE difference experiments confirmed that these products exist solely in the 2H form. Similar treatments of 3-amino-2-pyrazolin-5-one ...
متن کاملA Qualitative Comparison of the Reactivities of 3,4,4,5-Tetrachloro-4H-1,2,6-thiadiazine and 4,5-Dichloro-1,2,3-dithiazolium Chloride.
The high yielding transformations of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine into 3,5-dichloro-4H-1,2,6-thiadiazin-4-one (up to 85%) and 2-(3,5-dichloro-4H-1,2,6-thiadiazin-4-ylidene)malononitrile (up to 83%) have been investigated and compared to the analogous transformations of the closely-related 4,5-dichloro-1,2,3-dithiazolium chloride (Appel's salt) into 4-chloro-5H-1,2,3-dithiazol-5-one ...
متن کامل(E)-2-[1-(4-Fluorophenyl)pent-1-en-3-ylidene]malononitrile
The title mol-ecule, C(14)H(11)FN(2), is approximately planar except the ethyl group, the maximum atomic deviation being 0.105 (5) Å. The fluoro-phenyl ring and 2-propyl-idene-malononitrile unit are located on the opposite sides of the C=C double bond, showing an E configuration.
متن کاملThe condensation of salicylaldehydes and malononitrile revisited: synthesis of new dimeric chromene derivatives.
The reaction of salicylic aldehydes with malononitrile was reinvestigated, and the reaction pathway was followed by 1H NMR spectroscopy. A delicate control of the experimental conditions allowed the synthesis of 2-imino-2H-chromene-3-carbonitriles 1, (2-amino-3-cyano-4H-chromen-4-yl)malononitriles 2, 4-amino-5-imino-2,7-dimethoxy-5H-chromeno[3,4-c]pyridine-1-carbonitrile 12, and (4,5-diamino-1-...
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عنوان ژورنال:
دوره 66 شماره
صفحات -
تاریخ انتشار 2009