I<sub>2</sub>-TBHP-catalyzed one-pot highly efficient synthesis of 4,3-fused 1,2,4-triazoles from N-tosylhydrazones and aromatic N-heterocycles via intermolecular formal 1,3-dipolar cycloaddition
I2-TBHP-catalyzed azomethine imine generation and subsequent regioselective 1,3-dipolarcycloaddition (DC) with aromatic N-heterocycles was developed to afford various 4,3-fused 1,2,4-triazoles in excellent yields. The method is operationally simple and highly efficient with broad functional group tolerance.
SUBSTITUED BENZOFURAN COMPOUNDS AND METHODS OF USE THEREOF FOR THE TREATMENT OF VIRAL DISEASES
申请人:McComas Casey C.
公开号:US20150246902A1
公开(公告)日:2015-09-03
The present invention relates to compounds of formula (I) that are useful as hepatitis C virus (HCV) NS5B polymerase inhibitors, the synthesis of such compounds, and the use of such compounds for inhibiting HCV NS5B polymerase activity, for treating or preventing HCV infections and for inhibiting HCV viral replication and/or viral production in a cell-based system.
RuCl3/Oxone: An efficient combination for the synthesis of 3-aryl-[1,2,4]triazolo[4,3-a]pyridines from 2-(2-arylidenehydrazinol)pyridines
作者:Tallapally Swamy、Padma Raviteja、Goskula Srikanth、Basi V. Subba Reddy、Vadde Ravinder
DOI:10.1016/j.tetlet.2016.10.110
日期:2016.12
An efficient and convenient method for the synthesis of 3-aryl[1,2,4]triazolo[4,3-a]pyridines has been developed involving RuCl3/Oxone oxidative cyclization of 2-(2-arylidenehydrazinyl)pyridines, which occurs chemoselectively at the pyridine nitrogen. RuCl3 can be used as an efficient homogeneous catalyst for the synthesis of triazolopyridines through a direct intramolecular cyclization involving CN
已经开发出一种有效且方便的合成3-芳基[1,2,4]三唑并[4,3- a ]吡啶的方法,该方法涉及RuCl 3 / Oxone对2-(2-亚芳基肼基嗪)吡啶的氧化环化反应。在吡啶氮上有化学选择性。RuCl 3可以用作通过涉及C N键形成的直接分子内环化合成三唑并吡啶的有效均相催化剂。