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
过溴化物被证明是实现α,β-不饱和化合物双键向溴的亲核1,2加成的极好试剂。该反应在具有在C-1处带负电取代基的奥德香酚中被证明是高度选择性的。在具有附加的非共轭双键的其他替代物中,在具有富含电子的双键的烯烃的存在下,溴的竞争性亲电子加成可以被最小化。