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
Nucleophilic 1,2 addition of bromine to electron deficient double bonds by perbromide reagents
作者:Isidro G. Collado、Rosario H. Galán、Guillermo M. Massanet、Miguel S. Alonso
DOI:10.1016/s0040-4020(01)80659-1
日期:1994.1
excellent reagents for achieving nucleophilic 1,2 addition of bromine to the double bond of α,β-unsaturated compounds. This reaction proved to be highly selective in eudesmanolides with an electronegative substituent at C-1. In other subtrates with additional non-conjugated double bonds, competitive electrophilic addition of bromine can be minimized in the presence of alkenes with electron-rich double bonds