描述了(2-环烷基-1-苯并咪唑基)-N,N-二乙基乙酰胺7a-e的制备和初步生物学评价。制备化合物 7a - d 的关键步骤是 (i) 苯并咪唑的均裂环烷基化,其中银催化的环烷羧酸 1a - d 被过二硫酸盐氧化脱羧作为烷基自由基的来源,以及 (ii) ) 由铜青铜生成的乙氧基羰基卡宾对苯并咪唑进行 N-烷基化-催化重氮乙酸乙酯分解。
描述了(2-环烷基-1-苯并咪唑基)-N,N-二乙基乙酰胺7a-e的制备和初步生物学评价。制备化合物 7a - d 的关键步骤是 (i) 苯并咪唑的均裂环烷基化,其中银催化的环烷羧酸 1a - d 被过二硫酸盐氧化脱羧作为烷基自由基的来源,以及 (ii) ) 由铜青铜生成的乙氧基羰基卡宾对苯并咪唑进行 N-烷基化-催化重氮乙酸乙酯分解。
A novel efficient method for the selective synthesis of 2-substituted benzimidazoles is described through condensation reaction of o-phenylenediamines with a wide rang of aliphatic, aromatic and heteroaromatic aldehyde substrates using Brönsted acidic ionic liquid as a reusable catalyst under metal-free conditions at ambient temperature. Notably, Dodecylimidazolium hydrogen sulfate ([DodecIm][HSO4])
Halogenation of Substituted Benzimidazoles. Nitration of the Resulting Halobenzimidazoles
作者:Abdellatif El Kihel、Mohamed Benchidmi、El Mokhtar Essassi、Renée Danion-Bougot
DOI:10.1080/00397919908085780
日期:1999.2
Abstract Halogenation of 2-alkyl-5(6)-chloro(ormethyl)benzimidazoles occurs in 6(5) position and subsequent nitration affords the corresponding 7(4)-nitrobenzimidazoles.
[EN] TRICARBONYL COMPLEXES OF TRANSITION METALS WITH BENZO-HETEROCYCLIC DERIVATIVES OF THE CYCLOPENTADIENYL ANION<br/>[FR] COMPLEXES DE TRICARBONYLÉS DE MÉTAUX DE TRANSITION ET DE DÉRIVÉS BENZO-HÉTÉROCYCLIQUES DE L'ANION CYCLOPENTADIÉNYLE
申请人:NATIONAL CENTRE FOR SCIENT RESEARCH DEMOKRITOS
公开号:WO2019180200A1
公开(公告)日:2019-09-26
Complex compounds of transition metals according to formula (1) wherein the M(CO)3 + tricarbonyl-metal core forms a complex with the cyclopentadienyl anion linked to heterocyclic moieties of the benzothiazole, benzimidazole and benzoxazole families. The compounds exhibit high blood-brain barrier permeability and can be used in the diagnosis and/or treatment of diseases of the Central Nervous System.
Catalyst free approach to benzimidazoles using air as the oxidant at room temperature
作者:Chun Zhang、Liangren Zhang、Ning Jiao
DOI:10.1039/c2gc36416f
日期:——
A green and practical method to construct benzimidazoles, which are ubiquitous structural units in a number of biologically active compounds, has been developed. The catalyst and additive free conditions, using air as oxidant and the mild conditions make this transformation very green, practical, and attractive.
A dibenzoxepin derivative represented by the following general formula (I) wherein Y is a hydrogen atom and the like, RA is a hydrogen atom and the like, X is the formula (b3) wherein RB is a hydrogen atom and the like, and the like, A is the formula (a18) wherein R1 is a hydrogen atom and the like, and RC and RD are the same or different and each is a hydrogen atom and the like, and the like, which has a PPARγ agonist activity and the like, and useful as a therapeutic agent and/or prophylaxis agent and the like for type 2 diabetes and the like, or a pharmaceutically acceptable salt thereof and the like is provided.