Access to original spirocyclic derivatives via inter- or intramolecular reaction mediated by manganese(III) acetate
摘要:
An easily reproducible protocol allowing inter- or intramolecular spirocyclization on beta-dicarbonyl structures is described. This methodology could afford a wide variety of spirocyclic pharmacophores. As examples, highly substituted spirobenzophenanthridin-6(5H)-ones and spirolactones were synthesized. These scaffolds could be used for the design of many compounds exhibiting biological activities. (C) 2012 Elsevier Ltd. All rights reserved.
Rhodium-Catalyzed Synthesis of 2,3-Disubstituted Indoles from β,β-Disubstituted Stryryl Azides
作者:Ke Sun、Sheng Liu、Patryk M. Bec、Tom G. Driver
DOI:10.1002/anie.201006917
日期:2011.2.11
Rings à la carte: Rhodium carboxylate complexes catalyze selective cascade reactions to produce a range 2,3‐disubstituted indolesfromβ,β‐disubstituted stryrylazides. The selective migration of aryl groups appears to originate from a putative phenonium ion reactive intermediate (see scheme).
Novel N-[2-(cyclic alkyl)phenyl]pyrazole-4-carboxamides useful as fungicides, methods of using said compounds, and fungicidal compositions containing them.
(EN) Novel N-[2-(cyclic alkyl)phenyl]pyrazole-4-carboxamides useful as fungicides, methods of using said compounds, and fungicidal compositions containing them.(FR) Nouveaux N-[2-phényl]pyrazole-4-carboxamides d'alkyle cyclique utiles comme fongicides, procédés d'utilisation de ces composés et compositions fongicides les contenant.