在各种反应条件下,由3-苯甲基苯并咪唑鎓溴化物生成的苯并咪唑鎓烷基化物的1,3-偶极环加成反应与非对称活化偶极亲和剂导致吡咯并[1,2- a ]苯并咪唑和吡咯并[1,2- a的复杂混合物]喹喔啉衍生物。为了解释所有实验结果,研究了反应条件对反应产物的影响。首次出现4-羟基-4,5-二氢吡咯并[1,2 - a ]喹喔啉衍生物6,吡咯并[1,2- a ]喹喔啉季盐8以及4-甲氧基-4,5-二氢吡咯并酮[1,2- a ]喹喔啉9被分离出来,被充分表征,并提出它们的相互转化,以及提出的反应机理。
[EN] SELECTIVE INHIBITORS OF CARBONIC ANHYDRASE<br/>[FR] INHIBITEURS SÉLECTIFS D'ANHYDRASE CARBONIQUE
申请人:UNIV VILNIUS
公开号:WO2017017505A1
公开(公告)日:2017-02-02
Invention is related to novel compounds – benzenesulfonamides of general formulas (I) and (II). The compounds can be used in biomedicine as active ingredients in pharmaceutical formulations, because they inhibit enzymes which participate in disease progression. Acknowledgements: This research was funded by the European Social Fund under the Global Grant measure (no. VP1-3.1.-SMM-07-K-02-009).
Palladium-Catalyzed Dehydrogenative Cross-Couplings of Benzazoles with Azoles
作者:Wei Han、Peter Mayer、Armin R. Ofial
DOI:10.1002/anie.201006208
日期:2011.2.25
Different enough: Palladium‐catalyzed cross‐couplings of benzazoles with imidazoles, oxazoles, and thiazoles furnish unsymmetrical 2,2′‐bisheteroaryls in high yield (see scheme). These oxidative CC bond formations use the selective cleavage of the CH bond at C2 in the two coupling partners and are robust enough to be conducted under normal air atmosphere.
The one-pot three-componentreactions of 1-substituted benzimidazoles with ethyl bromoacetate and electron-deficient alkynes, in 1,2-epoxybutane, gave a variety of pyrrolo[1,2-a]quinoxalin-4-ones and pyrrolo[1,2-a]benzimidazoles. The influence of experimental conditions on the course of reaction was investigated. A novel synthetic pathway starting from benzimidazoles unsubstituted at the five membered
Silver(I) complexes of benzoimidazole and carbazole-derived sp2 N-containing Lewis bases are synthesized and the isostructural iodine(I) complexes with a strong 3-center 4-electron [N−I−N]+ halogen bond are obtained through the [N−Ag−N]+→[N−I−N]+ cation exchange reaction. The unambiguous confirmation of the complex formation is obtained in the solution state using NMR spectroscopy, and in the solid-state
[EN] HETEREOCYCLIC AGENT AS CATALYTIC STABILIZING AGENT IN A HYDROFORMYLATION PROCESS<br/>[FR] AGENT HÉTÉROCYCLIQUE COMME AGENT DE STABILISATION CATALYTIQUE DANS UN PROCÉDÉ D'HYDROFORMYLATION
申请人:DOW TECHNOLOGY INVESTMENTS LLC
公开号:WO2014149915A1
公开(公告)日:2014-09-25
A heterocyclic nitrogen stabilizing agent is employed to reduce the rate of catalyst deactivation in a hydroformylation process.