Rhodium catalyzed 2‐alkyl‐benzimidazoles synthesis from benzene‐1,2‐diamines and tertiary alkylamines as alkylating agents
作者:Yamini、Saurabh Sharma、Pralay Das
DOI:10.1002/aoc.6278
日期:2021.8
synthesized from benzene-1,2-diamine and tertiary amines as alkylating agent under polystyrene supported rhodium (Rh@PS) nanoparticles (NPs) catalyzed conditions. The heterogeneous rhodium catalyst was applied first time for the synthesis of 2-alkyl-benzimidazoles. The reaction followed through oxidation of alkylamines, transamination, and oxidativecyclisation with benzene-1,2-diamines for the corresponding
Silver-loaded TiO2 (Ag–TiO2) and acidic clay (K10 montmorillonite) composite photocatalyst has been successfully applied for the light-induced conversion of o-phenylenediamine (OPD) and its derivatives to substituted benzimidazoles with various alcohols in acetonitrile using UV-A and solar light. The influence of the various photocatalysts, solvents, and substituents on the yield and selectivity of the products has been investigated. The mechanism of photocatalysis is proposed. Loading silver on TiO2 enhances product yield and selectivity both in UV and solar light. In the presence of primary alcohols, 2-aminothiophenol forms only disulfide and hence Ag–TiO2/clay can be used as a green catalyst for the synthesis of disulfides.
4-(Benzoimidazol-2-yl)-thiazole Compounds and Related Aza Derivatives
申请人:Actelion Pharmaceuticals Ltd.
公开号:US20140371204A1
公开(公告)日:2014-12-18
The invention relates to compounds of Formula (I) wherein ring A, X, (R
1
)
n
, R
2
, R
3
, R
4
, R
4′
, R
5
, n, and p are as described in the description; to pharmaceutically acceptable salts thereof, and to the use of such compounds as medicaments, especially as modulators of the CXCR3 receptor.
[EN] INHIBITORS OF HCV NS5A<br/>[FR] INHIBITEURS DE NS5A DE VHC
申请人:PRESIDIO PHARMACEUTICALS INC
公开号:WO2011150243A1
公开(公告)日:2011-12-01
Provided herein are compounds, pharmaceutical compositions and combination therapies for inhibition of hepatitis C.
本文提供了用于抑制丙型肝炎的化合物、药物组合和联合疗法。
Microwave-Assisted Synthesis of Polysubstituted Benzimidazoles by Heterogeneous Pd-Catalyzed Oxidative C-H Activation of Tertiary Amines
作者:Lidia De Luca、Andrea Porcheddu
DOI:10.1002/ejoc.201101001
日期:2011.10
Tertiaryamines can be used in place of aldehydes and carboxylic derivatives as partners in the synthesis of benzimidazoles. Dehydrogenative amine activation under heterogeneous catalysis was developed for the direct transformation of tertiaryamines into benzimidazoles. Good yields and efficient recovery and recycling of the catalyst are some of the advantages of this new methodology, which shows