Mild and Efficient Vicinal Dibromination of Olefins Mediated by Aqueous Ammonium FluorideWe thank the Research Grant Council of the Hong Kong Special Administration Region (RGC Ref. No. CUHK14315716) and The Chinese University of Hong Kong Direct Grant (no. 4053203) for financial support. The equipment was partially supported by the Faculty Strategic Fund for Research from the Faculty of Science of the Chinese University of Hong Kong.
Received: 17 May 2017
Accepted after revision: 23 June 2017
08 August 2017 (eFirst)
A mild and efficient vicinal dibromination of olefins has been developed by using saturated aqueous ammonium fluoride solution as the promoter. Inexpensive and commercially available N-bromosuccinimide (NBS) was used as the brominating reagent. The corresponding vicinal dibromoalkanes could be obtained in good to excellent yields.