Synthesis 2019; 51(02): 508-515
DOI: 10.1055/s-0037-1610629
paper
© Georg Thieme Verlag Stuttgart · New York

Catalyst-Free Photodriven Reduction of α-Haloketones with Hantzsch Ester

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School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, People’s Republic of China   Email: yqy@ujs.edu.cn
› Author Affiliations

The authors are grateful to the National Natural Science Foundation of China (No. 21572118 & No. 21572080), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and Jiangsu University (No. 10JDG042 and No. 14JDG018) for their generous support.
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Publication History

Received: 20 May 2018

Accepted after revision: 04 August 2018

Publication Date:
29 August 2018 (online)


Dedicated to Professor Xiyan Lu on the occasion of his 90th birthday.

Abstract

Catalyst-free dehalogenation of α-haloketones under visible light irradiation is studied. The reactions were carried out in common organic solvent. The outcomes of dechlorination are excellent in yields up to 92%, and it is also applicable to bromides, which give even higher yields. The reaction is tolerable to a broad spectrum of substrates, especially to aromatic ketones, including various aryl and hetaryl groups. There are two examples of aliphatic ketones presented in the paper, although their reactivities are not as high as that of the aromatic ketones.

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