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Article
Phenyl radical, cation, and anion. The triplet-singlet gap and higher excited states of the phenyl cation
Nicolaïdes, Andrew N.; Smith, D. M.; Jensen, F.; Radom, L. (1997)High-level ab initio molecular orbital calculations have been carried out for the phenyl cation (1), the phenyl radical (2), and the phenyl anion (3). Our best estimate for the heat of formation (ΔH(f298)) of the phenyl ...
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Article
Reactions of tetracyanoethylene with N′-arylbenzamidines: A route to 2-phenyl-3 H -imidazo[4,5- b ]quinoline-9-carbonitriles
Mirallai, Styliana I.; Manoli, Maria; Koutentis, Panayiotis Andreas (2013)Eight 2-phenyl-3H-imidazo[4,5-b]quinoline-9-carbonitriles 15 are prepared in four steps from N′-arylbenzamidines 11 and tetracyanoethylene (TCNE) in ∼70-90% yields. The transformation involves the initial formation of ...
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Article
Synthesis of 2-(4H-1,2,6-thiadiazin-4-ylidene)malononitriles
Kalogirou, Andreas S.; Koutentis, Panayiotis Andreas (2014)The base-free TiCl4-mediated condensation of 3,5-disubstituted-4H-1,2,6-thiadiazin-4-ones 8 with malononitrile affords 20 difficult to access (3,5-disubstituted-4H-1,2,6-thiadiazin-4-ylidene)malononitriles 7. The reaction ...