131947-13-2Relevant articles and documents
Polyhalonitrobutadienes as versatile building blocks for the biotargeted synthesis of substituted N-heterocyclic compounds
Bilitewski, Ursula,Kaufmann, Dieter E.,Kupiec, S?ren R.,Ramming, Isabell,Zapol’skii, Viktor A.
, (2020)
Substituted nitrogen heterocycles are structural key units in many important pharmaceuticals. A new synthetic approach towards heterocyclic compounds displaying antibacterial activity against Staphylococcus aureus or cytotoxic activity has been developed. The selective synthesis of a series of 64 new N-heterocycles from the three nitrobutadienes 2-nitroperchloro-1,3-butadiene, 4-bromotetrachloro-2-nitro-1,3-butadiene and (Z)-1,1,4-trichloro-2,4-dinitrobuta-1,3-diene proved feasible. Their reactions with N-, O- and S-nucleophiles provide rapid access to push-pull substituted benzoxazolines, benzimidazolines, imidazolidines, thiazolidinones, pyrazoles, pyrimidines, pyridopyrimidines, benzoquinolines, isothiazoles, dihydroisoxazoles, and thiophenes with unique substitution patterns. Antibacterial activities of 64 synthesized compounds were examined. Additionally, seven compounds (thiazolidinone, nitropyrimidine, indole, pyridopyrimidine, and thiophene derivatives) exhibited a significant cytotoxicity with IC50-values from 1.05 to 20.1 μM. In conclusion, it was demonstrated that polyhalonitrobutadienes have an interesting potential as structural backbones for a variety of highly functionalized, pharmaceutically active heterocycles.
Chemistry of polyhalogenated nitrobutadienes, 10: Synthesis of highly functionalized heterocycles with a rigid 6-amino-3-azabicyclo[3.1.0]hexane moiety
Zapol'skii, Viktor A.,Namyslo, Jan C.,De Meijere, Armin,Kaufmann, Dieter E.
scheme or table, p. 621 - 628 (2012/06/01)
The nitropolychlorobutadienes 3, 4 are valuable building blocks for various amination and successive heterocyclization products. Nucleophilic substitution reactions of the partially protected, bioactive amines 1, 2 with either vinyl, imidoyl or carbonyl c
THE SYNTHESIS AND SOME REACTIONS OF 3-TRICHLOROMETHYL-4,5-DICHLOROISOTHIAZOLE
Kaberdia, R. V.,Potkin, V. I.,Ol'dekop, Yu. A.
, p. 1347 - 1351 (2007/10/02)
The reaction of 2-nitropentachloro-1,3-butadiene with elemental sulfur proceeds with the participation of the nitro group and leads to 3-trichloromethyl-4,5-dichloroisothiazole.The action of piperidine and sodium alcoholates on the isothiazole obtained gives 5-amino and 5-alkoxy derivatives of the starting isothiazole.The action of nitric acid on the starting isothiazole leads to hydrolysis of the trichloromethyl group with the formation of 4,5-dichloroisothiazole-3-carboxylic acid.Zinc in ethanol reduced the trichloromethyl group of 3-trichloromethyl-4,5-dichloroisothiazole to a dichloromethyl group, while the use of PbCl2 as the reducing agent gives dechlorodimerization of the starting isothiazole with the formation of 1,2-bis(4,5-dichloroisothiazole)tetrachloroethane.