Synthesis 2024; 56(03): 496-506
DOI: 10.1055/a-2183-0262
paper

Photo-Induced Electrophilic Aromatic Substitution of Ferric Acyl Nitrene

Ming Hou
,
Zhide Zhang
,
Xiaojing Lai
,
Qianshou Zong
,
Miaofeng Ren
,
Tianwen Bai
,
Guanyinsheng Qiu
Financial support from the Natural Science Foundation of Zhejiang Province (LY22B020010) is gratefully acknowledged.


Abstract

A photo-induced intramolecular electrophilic aromatic substitution (SEAr) of N-acyloxyamides using FeCl3 in 1,4-dioxane is reported for the synthesis of biologically interesting benzoxazin-3(4H)-ones. It is believed that irradiation with a blue LED facilitates the reaction, serving as a source of energy. The SEAr reaction pathway is ascribed to the electronic effects present in the aryl ring of the substrates. The reaction is also applicable for the synthesis of useful scaffolds possessing a quinolin-2-one core, such as an anticancer reagent and analogues of brexipiprazole and cilostamide.

Supporting Information



Publication History

Received: 29 August 2023

Accepted after revision: 27 September 2023

Accepted Manuscript online:
27 September 2023

Article published online:
20 November 2023

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