A recyclable palladium-catalyzed modified Friedländer quinoline synthesis
作者:Chan Sik Cho、Wen Xiu Ren
DOI:10.1016/j.jorganchem.2007.06.022
日期:2007.9
2-Aminobenzyl alcohol reacts with an array of ketones in toluene/poly(ethylene glycol) (PEG-2000) at 100 °C in the presence of a palladium catalyst along with KOH under an atmosphere of air to give the corresponding quinolines in good yields. The catalytic system could be recovered and reused five times without any loss of catalytic activity.
A copper(II)-catalyzed protocol for modified Friedländer quinoline synthesis
作者:Chan Sik Cho、Wen Xiu Ren、Sang Chul Shim
DOI:10.1016/j.tetlet.2006.07.067
日期:2006.9
2-Aminobenzylalcohol reacts with an array of ketones in dioxane at 100 °C in the presence of a catalytic amount of CuCl2 along with KOH under O2 atmosphere to afford the corresponding quinolines in good yields. 2-Aminobenzylalcohol is also oxidatively coupled and cyclized with various aldehydes by step-by-step procedure, an initial treatment of 2-aminobenzylalcohol in the presence of CuCl2 and KOH
acid catalytic system has been established, providing a direct approach for the preparation of diversesubstituted quinoline derivatives in high yields with wide functional group tolerance. Practically, the protocol can be easily scaled up to gram-scale and was utilized in the concise formal synthesis of a promising herbicide candidate.
Titania-Supported Iridium Subnanoclusters as an Efficient Heterogeneous Catalyst for Direct Synthesis of Quinolines from Nitroarenes and Aliphatic Alcohols
作者:Lin He、Jian-Qiang Wang、Ya Gong、Yong-Mei Liu、Yong Cao、He-Yong He、Kang-Nian Fan
DOI:10.1002/anie.201104089
日期:2011.10.17
A versatile heterogeneous catalyst consisting of sub‐nanosized iridium clusters deposited on titania (Ir/TiO2‐NCs) promotes the direct tandem synthesis of quinoline derivatives from readily available nitroarenes and aliphaticalcohols under mild and additive‐free conditions (see scheme). The process tolerates the presence of various reactive functional groups and is highly selective.
一种通用的多相催化剂,由沉积在二氧化钛上的亚纳米级铱簇(Ir / TiO 2 -NCs)组成,可促进在温和且无添加剂的条件下,由易得的硝基芳烃和脂肪族醇直接串联合成喹啉衍生物。该方法可耐受各种反应性官能团的存在,并且具有很高的选择性。