钾叔N-杂环的丁醇促进的acceptorless脱氢高效地实现用于N-杂芳烃和氢气的过渡金属-自由条件下产生。在存在KO t Bu碱的情况下,各种六元和五元N-杂环化合物可以有效地进行无受体脱氢,从而在140°C的邻二甲苯中提供相应的N-杂芳烃和H 2气体。本协议提供了一条通往芳香族含氮化合物和H 2气体的便捷途径。
A novel iridium/acid co-catalyzed transfer hydrogenative C(sp<sup>3</sup>)–H bond alkylation to access functionalized N-heteroaromatics
作者:Zhenda Tan、Huanfeng Jiang、Min Zhang
DOI:10.1039/c6cc03996k
日期:——
A novel iridium/acid co-catalysed transfer hydrogenative coupling strategy, enabling direct alkylation of C(sp3)-H bond and atom-economic access to alkyl chain-lengthened N-Heteroaromatics from six-membered 2-alkyl cyclicamines and aldehydes, has been...
An investigation employing the catalytic system consisting of (pentamethylcyclopentadienyl)rhodium dichloride dimer [Cp*RhCl2]2 and 2,2′-bipyridine (bpy) for transferhydrogenation of a variety of quinoxalines, quinoxalinones, quinolines and indoles under aqueous conditions with formate as the hydrogen source is reported. This approach provides various tetrahydroquinoxalines, dihydroquinoxalinones
Intramolecular cyclization reactions of unsaturated amino Fischer chromium carbenes forming indoles and quinolines
作者:Björn C.G Söderberg、James A Shriver、Seth H Cooper、Timothy L Shrout、E Scott Helton、Lucinda R Austin、Herman H Odens、Brian R Hearn、Paula C Jones、Tiara N Kouadio、Tan H Ngi、Rachel Baswell、H John Caprara、Mark D Meritt、Than T Mai
DOI:10.1016/j.tet.2003.09.028
日期:2003.10
annulation reaction of N-(2-alkenylphenyl)amino substituted Fischer chromium carbenes has been extensively examined. The carbene complexes were prepared in moderate to good yields by reaction of 2-aminostyrenes with intermediately formed acyloxy substituted carbenes. Upon heating, the thermally labile carbenes decomposed producing indoles and quinolines as the major products. The product distribution
Heterogeneous Gold-Catalyzed Selective Reductive Transformation of Quinolines with Formic Acid
作者:Lei Tao、Qi Zhang、Shu-Shuang Li、Xiang Liu、Yong-Mei Liu、Yong Cao
DOI:10.1002/adsc.201400721
日期:2015.3.9
Single phase rutile titania supportedgold nanoparticles (Au/TiO2‐R) are found to be efficient and versatile catalysts for chemo‐ and regioselective transfer hydrogenation of quinoline derivatives to 1,2,3,4‐tetrahydroquinolines (THQs) using formic acid (FA) as a safe and convenient hydrogen source under mild conditions. The activity and chemoselectivity of the Au/TiO2‐R catalyst towards THQs is excellent
发现单相金红石型二氧化钛负载的金纳米颗粒(Au / TiO 2 ‐R)是高效和通用的催化剂,用于使用甲酸将喹啉衍生物化学和区域选择性转移氢化为1,2,3,4-四氢喹啉(THQs)。 FA)作为温和条件下的安全便捷的氢源。Au / TiO 2 -R催化剂对THQs的活性和化学选择性极好,底物与催化剂之比(S / C)为1000是可行的。此外,还建立了通过一锅,金催化的还原性N-甲酰化方案直接从喹啉化合物和FA制备N-甲酰基四氢喹啉(FTHQ)的直接方法。
N-methylene malonate of tetrahydroquinoline and derivatives thereof
申请人:Riker Laboratories, Inc.
公开号:US03969463A1
公开(公告)日:1976-07-13
Certain substituted 6,7-dihydro-1-oxo-1H,5H-benzo[ij]-quinolizine-2-carboxylic acids and hydrazides, esters, amides and salts thereof, intermediates therefor, and a process for their preparation are described; the compounds are active as anti-microbial agents.