Indium(III) bromide has been used for the first time for the synthesis of imidazo[1,2-a]pyridines in a one-pot operation from 2-aminopyridine, aldehydes, and alkynes. InBr3 was found to be more effective for the activation of both alkyne and imine derived from aryl aldehyde and 2-aminopyridine.
溴化铟(III)首次用于由一锅操作由2-氨基吡啶,醛和炔烃合成咪唑并[1,2- a ]吡啶。发现InBr 3对于活化衍生自芳基醛和2-氨基吡啶的炔烃和亚胺都更有效。
Synthesis of Imidazo[1,2-<i>a</i>]pyridines Using Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>as an Efficient Nanomagnetic Catalyst<i>via</i>a One-Pot Multicomponent Reaction
作者:Ali Maleki
DOI:10.1002/hlca.201300244
日期:2014.4
A one‐pot multicomponent synthesis of imidazo[1,2‐a]pyridine derivatives by using pyridin‐2‐amines, aldehydes, and terminalalkynes in the presence of a catalytic amount of silica‐supported iron oxide (Fe3O4@SiO2) nanoparticles in refluxing EtOH in good‐to‐excellent yields is reported.
咪唑并[1,2的一锅合成的多组分一]吡啶用吡啶-2-胺,醛,和末端炔烃在二氧化硅负载氧化铁的催化量存在衍生物(铁3 Ò 4 @SiO 2)报道了回流EtOH中的纳米颗粒,收率良好。