Environmentally Benign Synthesis of Indeno[1,2-b]quinolines via an Intramolecular Povarov Reaction
摘要:
A new synthetic route to indeno[1,2-b]quinolines via reactions of o-propargylbenzaldehydes with N-aryl amines based on an intramolecular aza-Diels-Alder (Povarov) reaction has been developed. This method offers several advantages such as no requirement for an oxidant, high efficiency, and a wide reaction scope.
Environmentally Benign Synthesis of Indeno[1,2-b]quinolines via an Intramolecular Povarov Reaction
摘要:
A new synthetic route to indeno[1,2-b]quinolines via reactions of o-propargylbenzaldehydes with N-aryl amines based on an intramolecular aza-Diels-Alder (Povarov) reaction has been developed. This method offers several advantages such as no requirement for an oxidant, high efficiency, and a wide reaction scope.
(Bromodimethyl)sulfonium Bromide Catalyzed Solvent-Free Friedlander Synthesis of Substituted Quinolines
作者:R. Venkatesham、A. Manjula、B. Vittal Rao
DOI:10.1002/jhet.873
日期:2012.7
A simple and efficient (bromodimethyl)sulfoniumbromidecatalyzedsynthesis of quinolines, by condensation of α‐amino carbonyl, that is, 2‐aminobenzophenone and 2‐aminoacetophenone with α‐methylene containing carbonyl like 1,3‐dicarbonyls has been developed. The reaction is versatile, solvent‐free protocol for generation of structurally diverse quinolines.
and pyrimidines using combinations of 2-aminobenzyl alcohols and alcohols as well as benzamidine and two different alcohols, respectively. These reactions proceed with high atom efficiency via a sequence of dehydrogenation and condensation steps that give rise to selective C-C and C-N bond formations, thereby releasing 2 equiv of hydrogen and water. A hydride Mn(I) PNPpincercomplex recently developed
An efficient and cost-effective procedure for preparation of Fe3O4 nanoparticles and supported Brønsted acidicionicliquid 1-methyl-3-(3-trimethoxysilylpropyl)imidazolium hydrogensulfate (Fe3O4-IL-HSO4) as a Brønsted acidicionicliquid and efficient magnetic catalyst is described, together with its use for one-pot synthesis of polysubstituted quinolines through Friedländer condensation of 2-aminoaryl
制备Fe 3 O 4纳米颗粒和布朗斯台德酸性离子液体1-甲基-3-(3-三甲氧基甲硅烷基丙基)咪唑硫酸氢盐(Fe 3 O 4 -IL-HSO 4)的有效方法,且成本低廉描述了一种离子液体和高效的磁性催化剂,以及在无溶剂条件下通过2-氨基芳基酮与1,3-二羰基化合物的Friedländer缩合反应一锅合成多取代喹啉的方法。该方法最值得注意的方面是它的环境友好性,操作简便性,在短反应时间内的优异收率,容易的产物分离以及催化剂的极好的可重复使用性。
Construction of Polyaromatic Hydrocarbons Containing Sulfur and Nitrogen via Controllable Domino Reactions and DFT Studies
hydrocarbons (PHAs) containing heteroatomshave attracted considerable attention due to their potential utility in electronic devices. This work reported a novel domino reaction between an aryne precursor and azadiene bearing a benzothiophene moiety to produce a series of PHAs containing sulfur and nitrogen atoms. Further transformation of the product enabled concise synthesis of a new AIEgen, whose photophysical