Synthesis 2023; 55(21): 3670-3684
DOI: 10.1055/a-2054-0482
special topic
C–H Bond Functionalization of Heterocycles

Photocatalyst-Free, Visible-Light-Mediated C–H Perfluoroalkylation of Quinazolin-4(3H)-ones with perfluoroalkyl Iodides

Thomas Delouche
a   Univ Rouen Normandie, INSA Rouen, CNRS, COBRA UMR 6014, 76000 Rouen, France
,
Abdoul Gadiry-Diallo
a   Univ Rouen Normandie, INSA Rouen, CNRS, COBRA UMR 6014, 76000 Rouen, France
,
a   Univ Rouen Normandie, INSA Rouen, CNRS, COBRA UMR 6014, 76000 Rouen, France
,
Sensuke Ogoshi
b   Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
,
Corinne Fruit
a   Univ Rouen Normandie, INSA Rouen, CNRS, COBRA UMR 6014, 76000 Rouen, France
› Author Affiliations
The University of Rouen Normandy, Institut National des Sciences Appliquées Rouen (INSA) Rouen Normandy, the Centre National de la Recherche Scientifique (CNRS), European Regional Development Fund (ERDF), Labex SynOrg (ANR-11-LABX-0029), Carnot Institute I2C, the graduate school for research XL-Chem (ANR-18-EURE-0020 XL CHEM), and Région Normandie (RIN Program) are acknowledged for financial support.


Abstract

A practical and sustainable photocatalyst-free protocol for photoinduced synthesis of perfluoroalkylated quinazolin-4(3H)-ones is described starting from quinazolin-4(3H)-ones. A wide range of substituted or fused-quinazolinones is found to be compatible, providing the corresponding mono- and bis-perfluoroalkylated compounds in moderate yields. This visible-light-mediated C–H perfluoroalkylation allows an environmentally friendly and straightforward access to an array of unprecedented functionalized quinazolinone scaffolds, presenting attractive features for drug discovery. Control experiments demonstrated that a radical mechanism is involved in the reaction mechanism.

Supporting Information



Publication History

Received: 31 January 2023

Accepted after revision: 14 March 2023

Accepted Manuscript online:
14 March 2023

Article published online:
11 April 2023

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