Synthesis of imidazo[1,5-<i>a</i>]pyridines via cyclocondensation of 2-(aminomethyl)pyridines with electrophilically activated nitroalkanes
作者:Dmitrii A Aksenov、Nikolai A Arutiunov、Vladimir V Maliuga、Alexander V Aksenov、Michael Rubin
DOI:10.3762/bjoc.16.239
日期:——
Imidazo[1,5-a]pyridines were efficiently prepared via the cyclization of 2-picolylamines with nitroalkanes electrophilically activated in the presence of phosphorous acid in polyphosphoric acid (PPA) medium.
咪唑并[1,5- a ]吡啶是通过在多磷酸(PPA)介质中在亚磷酸存在下用亲电子活化的硝基烷与2-吡啶甲基胺环化而有效制备的。
An AcOH-mediated metal free approach towards the synthesis of bis-carbolines and imidazopyridoindole derivatives and assessment of their photophysical properties
the formation of three C–N bonds in a single operation. The multicomponent character of the reaction, easy to execute reaction conditions, simple purification procedure and excellent light emitting properties of the product afforded thereof provide a huge scope.
一个的AcOH介导的简洁,原子的经济和环境上可持续的串联策略已被配制成访问高荧光(Φ ˚F高达40%)N -稠合二咔啉,imidazopyrido [3,4 b ]吲哚和咪唑并[1,2 5- a ]吡啶通过一次操作形成三个C–N键。反应的多组分特性,易于执行的反应条件,简单的纯化步骤以及所提供产物的优异发光性能提供了广阔的范围。
Pyridoimidazole derivatives
申请人:Forest Laboratories Holdings Limited
公开号:US07501438B2
公开(公告)日:2009-03-10
The present invention relates to pyridoimidazole derivatives that act as cannabinoid receptor ligands, e.g., CB2 ligands. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and to methods of treatment using the compounds.
A copper(I)-catalyzed direct transannulation of N-heteroaryl aldehydes or ketones with alkylamines via C-sp(3)-H amination has been achieved using molecular oxygen as a sole oxidant. N-Heteroarenes are employed as the amine source. This transformation provides a rapid and concise access to multifunctional imidazo[1,5-a]pyridines.