A rapid and environmentally friendly conversion of pyridine to imidazo[1,2-a]pyridines has been developed via copper-catalyzedaerobicdehydrogenativecyclization with ketone oxime esters.
通过铜与酮肟酯的需氧脱氢环化反应,已开发了吡啶向咪唑并[1,2- a ]吡啶的快速环保转化。
Copper-Catalyzed C–H Functionalization of Pyridines and Isoquinolines with Vinyl Azides: Synthesis of Imidazo Heterocycles
Copper(I) iodide-catalyzed oxidative C(sp2)–H functionalization of pyridines and isoquinolines for the synthesis of imidazo[1,2-a]pyridines and 2-phenylimidazo[2,1-a]isoquinolines with vinyl azides under mild aerobic conditions is reported. Good selectivity for 3-substitutedpyridines and single isomer formation with isoquinolines were observed.
碘化铜(I)催化吡啶和异喹啉的碘化铜(I 2)催化氧化C(sp 2)–H官能团,用于在温和的条件下用乙烯基叠氮化物合成咪唑并[1,2- a ]吡啶和2-苯基咪唑并[ 2,1- a ]异喹啉有氧条件的报道。观察到对3-取代的吡啶具有良好的选择性,并与异喹啉形成了单一异构体。
IMIDAZOPYRIDINE-BASED COMPOUND AND ORGANIC LIGHT EMITTING DIODE INCLUDING ORGANIC LAYER COMPRISING THE IMIDAZOPYRIDINE-BASED COMPOUND
申请人:Kim Hee-Yeon
公开号:US20080125593A1
公开(公告)日:2008-05-29
Imidazopyridine-based compounds and organic light emitting diodes (OLEDs) including organic layers including the imidazopyridine-based compounds are provided. The organic light emitting diodes including organic layers having the imidazopyridine-based compounds have low driving voltages, high efficiencies, high luminance, long life-times and low power consumption.
EFFICIENT SYNTHESIS OF IMIDAZO[2,1-α]ISOQUINOLINES USING A HYPERVALENT IODINE(III) SULFONATE
作者:R.-S. Hou、H.-M. Wang、H.-Y. Huang、L.-C. Chen
DOI:10.1080/00304940409356637
日期:2004.10
intermediates (2). Subsequent cyclocondensation by 1-aminoisoquinoline at room temperature in the presence of sodium carbonate gave the corresponding imidazo[2,1 -a]isoquinoline derivatives (3) in good yields as shown in the Scheme. The 2,4-dinitrobenzenesulfonyloxy group located at the a position to a carbonylgroup represents an increasingly important entity in both mechanistic and synthetic organic chemistry
Three Sequential C–N Bond Formations: <i>tert</i>-Butyl Nitrite as a N1 Synthon in a Three Component Reaction Leading to Imidazo[1,2-<i>a</i>]quinolines and Imidazo[2,1-<i>a</i>]isoquinolines
作者:Prasenjit Sau、Amitava Rakshit、Anju Modi、Ahalya Behera、Bhisma K. Patel
DOI:10.1021/acs.joc.7b02815
日期:2018.1.19
dual role of an oxidant as well as a N1 synthon in a multicomponent reaction involving quinolines, isoquinolines, and styrenes. Herein, two sp2 C–H functionalizations of styrenes and one sp2 C–H functionalization of quinolines and isoquinolines lead to the formation of fused quinolines and isoquinolines via three sequential C–N bond formations.