Unprecedented Hydrothermal Reaction of <i>O</i>-Phenylaniline and Related Derivatives with Cyclic Ketones. A Novel Approach to the Construction of Phenanthridine and Quinoline Ring Systems
作者:Barun K. Mehta、Kazumichi Yanagisawa、Motoo Shiro、Hiyoshizo Kotsuki
DOI:10.1021/ol0300120
日期:2003.5.1
[reaction: see text] A new method for synthesizing phenanthridine and its related compounds was developed using the condensation of o-phenylaniline and its homologues with cyclic ketones under hydrothermal conditions.
A robust synthesis of phenanthridines has been described via Pd(II)-catalyzed domino C(sp2)–H activation/N-arylation using oxime esters with aryl acyl peroxides in a highly regioselective manner. This protocol is compatible with acetophenone as well as benzophenone-derived oxime esters and allows modular construction of functionalized phenanthridines with wide tolerance of electronic functionality
Pd-catalyzed assembly of phenanthridines from aryl ketone O-acetyloximes and arynes through C–H bond activation
作者:Chen-Yu Tang、Xin-Yan Wu、Feng Sha、Fei Zhang、Hao Li
DOI:10.1016/j.tetlet.2013.12.075
日期:2014.1
Pd-catalyzed annulation of aryne and aryl ketone O-acetyloxime via C-H bond activation was realized. Through the C-H bond activation/insertion/cyclization/elimination reaction sequence, phenanthridines are successfully constructed, providing an attractive strategy to approach substituted heterocycle without preactivation of starting materials. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
<i>o</i>-Nitrobenzyl Oxime Ethers Enable Photoinduced Cyclization Reaction to Provide Phenanthridines under Aqueous Conditions
In this paper, we describe a novel N–O photolysis of o-nitrobenzyl oxime ethers that enables the synthesis of phenanthridines via intramolecular cyclizationreactions. Without the use of additional photocatalysts or photosensitizers, the process proceeds with an efficiency of ≤96% upon exposure of the sample to near-visible light (405 nm) under aqueous conditions. Through the photoinduced production
在本文中,我们描述了一种新型的邻硝基苄基肟醚的 N-O 光解,它能够通过分子内环化反应合成菲啶。在不使用额外的光催化剂或光敏剂的情况下,在水性条件下将样品暴露于近可见光 (405 nm) 时,该过程的效率≤96%。通过在 HeLa 细胞中光诱导产生荧光菲啶衍生物,证明了生物条件下反应的进展。这种光诱导环化反应可用作不同的光化学仪器,通过诱导生物活性分子的产生来控制生物过程。