Synlett 2022; 33(18): 1819-1825
DOI: 10.1055/a-1961-6102
cluster
Development and Applications of Novel Ligands/Catalysts and Mechanistic Studies on Catalysis

Catalytic Enantioselective Dihalogenation of Alkenes

Jia-Wei Dong
a   School of Pharmacy, Henan University, 379 Mingli Road, Zhengzhou 475000, P. R. of China
,
Ren-Fei Cao
b   School of Chemistry and Chemical Engineering and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. of China
,
b   School of Chemistry and Chemical Engineering and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. of China
› Author Affiliations
This research was supported by the China Postdoctoral Science Foundation (2020M682280). We also thank the National Natural Science Foundation of China (NSFC, grant nos. 22071149 and 21871178), and the Science and Technology Commission of Shanghai Municipality (STCSM, grant no. 19JC1430100) for financial support. This research was also supported by The Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning.


Abstract

Vicinal dihalides not only emerge as reactive intermediates in synthetic organic chemistry, but also are extensively existing in bioactive marine natural products. The dihalogenation of alkenes is the most direct and effective method for the synthesis of vicinal dihalides. Because there is always an exchange process between the chiral haloniums and the unreacted olefins to cause racemization, the development of catalytic enantioselective dihalogenation of alkenes is of great difficulty. Recently, great progress has been made in catalytic asymmetric manner. However, there is a lack of related review of discussions of the mechanisms and reaction systems. This review is aimed at summarizing enantioselective dihalogenation of alkenes, including 1,2-dichlorination, 1,2-dibromination, and 1,2-difluorination, which is expected to encourage more researchers to participate in this field.

1 Introduction

2 Enantioselective 1,2-Dichlorination and 1,2-Dibromination of Alkenes

2.1 Chiral-Boron-Complex-Promoted Enantioselective 1,2-Dichlorination

2.2 Organocatalytic Asymmetric 1,2-Dichlorination and 1,2-Dibromination

2.3 Chiral-Titanium-Complex-Catalyzed 1,2-Dihalogenation

3 Chiral-Iodide-Catalyzed Enantioselective Oxidative 1,2-Difluorination

4 Summary and Outlook



Publication History

Received: 02 July 2022

Accepted after revision: 14 October 2022

Accepted Manuscript online:
14 October 2022

Article published online:
24 October 2022

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