- 1,2-Diacyl-1-arylhydrazines: II. Molecular and Crystal Structure of 1,2-Dibenzoyl-1-phenylhydrazines and 2-Acetyl-1-(4-nitrophenyl)-1-salicyloylhydrazines
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Molecules of 1,2-dibenzoyl-1-phenyl- and 2-acetyl-1-(4-nitrophenyl)-1-salicyloylhydrazines are nonplanar, the unshared electron pairs of the nitrogen atoms in them are orthogonal to each other, and the torsion angle about the amide bonds depends on the nature of substituents at the nitrogen atoms. The molecules in crystal pack in infinite chains formed by intermolecular hydrogen bonds.
- Buzykin,Gubaidullin,Litvinov,Gazetdinova,Sysoeva
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p. 1889 - 1893
(2007/10/03)
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- The Reaction of 1-(N-Phenacylidene)amino-1,2,3-triazoles with Diphenylnitrilimine
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Diphenylnitrilimine reacts with 1-(N-phenacylidene)amino-1,2,3-triazoles 1 to give mainly 1,2,4- and 2H-1,2,3-triazoles 2 and 3.CNDO/2 calculations were made on the compounds 1 and the cycloaddition was also examined on the basis of the interacting fronti
- Bojilova, A.,Rodios, N. A.,Tsoleridis, C. A.,Alexandrou, N. E.
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p. 735 - 738
(2007/10/02)
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- RECYCLIZATION REACTIONS. 26. RECYCLIZATION OF HETEROARENIUM SALTS BY ACTION OF ACID ANHYDRIDE IN THE PRESENCE OF BASE
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When oxazolium, 1,3,4-thia- and -selenodiazolium, or pyrylium salts react with acid anhydride in the presence of base, they are recyclized to pyrrole, pyrazole, and benzene derivatives, respectively.The typical features of recyclization involving anhydride in a number of five-membered systems are discussed.
- Lipnitskii, V. F.,Shvaika, O. P.
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p. 1398 - 1403
(2007/10/02)
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- Thermal Decomposition of Liquid α-Nitrotoluene
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Liquid α-nitrotoluene decomposes on heating into benzonitrile, benzaldehyde, benzaldehyde oxime, oxides of nitrogen, and water.Prolonged heating (over 2 h) at 125 deg C leads to N,N'-dibenzoyl-N-phenylhydrazine, α-nitrostilbene, 3,4,5-triphenylisoxazole, 1,3,5-triphenyl-1,2,4-triazole, 3,5-diphenyl-1,2,4-oxadiazole, benzamide, benzylideneaniline, benzanilide, and trans-stilbene.The product distribution depends on the temperature and duration of heating.
- Huang, Hsing H.,Tan, Bee G.
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p. 233 - 235
(2007/10/02)
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