Synthese de Nouvelles 4-Acetonylidene-1,5-benzodiazepin-2-ones III: Etude de la Reaction de Condensation des o-Phenylenediamines monosubstituees avec la γ-pyrone
Condensation of unsymmetrical aromatic diamines (4-methyl-, 4-chloro-, and 4-nitrophenylenediamines) 2-4 with 2-hydroxy-6-methyl-4-pyrone 1 have been examinated. The structure of isomerie 4-acetonylidene-1,5-benzodiazepin-2-ones 5-10 and benzimidazoles 11-16 obtained from competitive reactions have been established by the spectrale data (1H NMR, IR and mass spectrum). The position of the substituents in 6/9 and 7/10 was proved by comparison with samples with authentic structures.
Abbassi, M. El,Essassi, E. M.,Fifani, J.
p. 205 - 210
(2007/10/03)
THE BASE-INDUCED DECOMPOSITION OF ETHYL N-(o-AZIDOARYL) CARBAMATES. AN UNEXPECTED FORMATION OF AZO-COMPOUNDS.
A mechanistic rationale is offered to explain the formation of dihydrobenzimidazoles and azo-compounds in the base-induced (NaH-DMF) decompositions of ethyl N-(o-azidoaryl) carbamates.
Smalley, Robert K.,Stocker, Antony W.
p. 1389 - 1392
(2007/10/02)
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