Novel catalytic bromolactonization of alkenoic acids using iodobenzene and Oxone®
作者:Yan He、Ye Pu、Bo Shao、Jie Yan
DOI:10.1002/jhet.617
日期:2011.5
The novelcatalytic reaction for bromolactonization of alkenoicacids is reported. When iodobenzene is used as recyclable catalyst in combination with Oxone® as terminal oxidant, the cyclization of various 4‐pentenoic acids with sodium bromide is easily carried out in CF3CH2OH at room temperature and giving five‐membered bromolactones in good yields. J. Heterocyclic Chem., 2011.
new protocol for the direct two-electron oxidative Umpolung of alkali halidesalts is reported. This procedure, relying on the use of a commercially available sulfoxide as the oxidant, allows the electrophilichalogenation of carbonyl compounds as well as halolactonisation reactions to proceed from the corresponding sodium salts, at room temperature and under mild conditions.