Vicinal dihalogenation of alkenes is a fundamental textbook reaction. Such reactions are still mainly performed by traditional methods that imply the use of toxic, corrosive and not easy to handle reagents. Herein, we report a simple, efficient and eco-friendly alternative that challenges those conventional methods and allows not only the homonuclear but also the heteronuclear dihalogenation of alkenes
The manuscript describes a novel and efficient oxidative bromination of olefins, alkynes, and ketones with HBr as the brominating reagent and DMSO as the mild oxidant. This chemistry provides an...
Facile one-pot synthesis of α-bromoketones from olefins using bromide/bromate couple as a nonhazardous brominating agent
作者:Rajendra D. Patil、Girdhar Joshi、Subbarayappa Adimurthy、Brindaban C. Ranu
DOI:10.1016/j.tetlet.2009.03.047
日期:2009.5
A new method for the preparation of α-bromoketones from olefins using bromide/bromate couple as a nonhazardous brominating agent has been developed. Several α-bromoketones were successfully prepared from a variety of olefins by this method. This procedure is an alternative to conventional molecular bromine.
Facile NBS/DMSO mediated dibromination of olefins including selected natural products and glycals
作者:Hafiz Ul Lah、Shabir Ahmad Mir、Gulzar Hussain、Rafiq Ahmad Wani、Syed Khalid Yousuf
DOI:10.1007/s12039-021-02003-3
日期:2022.3
diastereoselective vic-dibromination of olefins has been developed. The process employs a readily available N-Bromosuccinimide (NBS)/DMSO reagent system as a bromine source. High substrate scope, simple reaction conditions, application to natural products and glycals makes the process very attractive. Graphical abstract A highly chemo- and diastereoselective vic-dibromination of olefins has been developed. The process
Polysubstituted N-H pyrroles with a wide variety of substituents were prepared from vinyl azides and 1,3-dicarbonyl compounds by using Mn(III) complexes as catalysts.