提出了一种在微波辐射下合成 7-phenyl-6 H - chromeno[4,3- b ]quinolines的方便、简便、环保的方法。目前的策略是通过分子间席夫碱形成,然后通过使用催化量的三氟甲磺酸铜作为分子内逆向需求杂-Diels-Alder [4+2]-环加成反应,在更短的反应时间内,在 80 °C 下合成苯并喹啉框架。唯一的催化剂。因此,一个 C-N 键和两个 C-C 键在一个锅中构建,并且广泛合成了具有良好官能团耐受性的 7-phenyl-6 H - chromeno[4,3 - b ]quinolines。
Merging Visible-Light Photoredox and Lewis Acid Catalysis for the Intramolecular Aza-Diels-Alder Reaction: Synthesis of Substituted Chromeno[4,3-<i>b</i>
]quinolines and [1,6]Naphthyridines
Substituted chromeno[4,3‐b]quinolines and [1,6]naphthyridines were achieved by tandem intramolecular aza‐Diels–Alder reaction using a strategy of combination of visible‐light photoredox and Lewis‐acid‐catalysis. This intramolecular aza‐Diels–Alder cycloaddition took place between the in situ generated benzylidene anilines derived from arylamines and salicylaldehyde or 2‐aminoaryl aldehydes bearing
Modular Copper-Catalyzed Synthesis of Chromeno[4,3-<i>b</i>]quinolines with the Utilization of Diaryliodonium Salts
作者:Klára Aradi、Petra Bombicz、Zoltán Novák
DOI:10.1021/acs.joc.5b02490
日期:2016.2.5
A novel, highly modular synthetic method with high functional group tolerance was developed for the construction of chromenoquinoline derivatives from arylpropynyloxy-benzonitriles and diaryliodonium triflates via an oxidative arylation–cyclization path. The copper(I) chloride catalyzed reaction is presumed to involve the formation of highly active arylcopper(III) species.