Synthesis of tetrazolodiazepines by a five-centered four-component azide Ugi reaction. Scope and limitations

Tetrazolo[1,5-a][1,4]benzodiazepines were obtained by an efficient azide five-centered four-component Ugi reaction, which used ketones, sodium azide, ammonium chloride, and the corresponding isonitrile. Scope and limitations of this multi-component reaction were considered. © 2012 Springer Science+Business Media New York

Synthesis of tetrazolodiazepines by a five-centered four-component azide Ugi reaction. Scope and limitations

Tetrazolo[1,5-a][1,4]benzodiazepines were obtained by an efficient azide five-centered four-component Ugi reaction, which used ketones, sodium azide, ammonium chloride, and the corresponding isonitrile. Scope and limitations of this multi-component reaction were considered. © 2012 Springer Science+Business Media New York

Concise approach toward tetrazolo[1,5-a ][1,4]benzodiazepines via a novel multicomponent isocyanide-based condensation

A novel and efficient method for the synthesis of heteroannulated [1,4]benzodiazepines via an isocyanide-based multicomponent reaction is reported. The tetrazolo[1,5-a][1,4]benzodiazepines were obtained by a facile azide Ugi five-center four-component reaction (U-5C-4CR) using ketones, sodium azide, ammonium chloride, and corresponding isocyanide. The aforementioned tetrazolodiazepines represent a notable class of compounds with proven platelet aggregation inhibitory and cholecystokinin agonist activities. © 2010 American Chemical Society

Transformations of nitro-substituted dihydroisoindoles in reactions with activated alkynes

[No abstract available

Interaction of condensed tetrahydropyrido[4,3-d]pyrimidin-4-ones with dehydrobenzene – synthesis of 6-vinylpyrimidinones fused with five-membered heterocycle containing two or three heteroatoms

[Figure not available: see fulltext.] The reaction between dehydrobenzene and tetrahydropyrido[4,3-d]pyrimidin-4-ones condensed with isoxazole, thiazole, thiadiazole, or triazole rings resulted in Hofmann cleavage of the tetrahydropyridine moiety with the formation of 6-vinyl-substituted pyrimidones fused with the corresponding azole rings. © 2018, Springer Science+Business Media, LLC, part of Springer Nature

Transformations of nitro-substituted dihydroisoindoles in reactions with activated alkynes

[No abstract available

Concise approach toward tetrazolo[1,5-a ][1,4]benzodiazepines via a novel multicomponent isocyanide-based condensation

A novel and efficient method for the synthesis of heteroannulated [1,4]benzodiazepines via an isocyanide-based multicomponent reaction is reported. The tetrazolo[1,5-a][1,4]benzodiazepines were obtained by a facile azide Ugi five-center four-component reaction (U-5C-4CR) using ketones, sodium azide, ammonium chloride, and corresponding isocyanide. The aforementioned tetrazolodiazepines represent a notable class of compounds with proven platelet aggregation inhibitory and cholecystokinin agonist activities. © 2010 American Chemical Society

Reactions of thieno[2,3-с]pyrrolines with dehydrobenzene

[Figure not available: see fulltext.] Thieno[2,3-c]pyrrolines bearing a branched substituent at the nitrogen atom reacted with dehydrobenzene, furnishing thienylaziridines. N-Benzyl-substituted thienopyrroline under the reaction conditions gave a Stevens rearrangement product, 6-benzyl-5-phenylthieno[2,3-c]-pyrroline. © 2018, Springer Science+Business Media, LLC, part of Springer Nature