Copper-mediated bromine atom transfer radical cyclisation of unactivated alkyl bromides
作者:Xue Yang、Jianlin Zhou、Shuoren Wu、Wei Yu
DOI:10.1039/d3cc02430j
日期:——
The atom transfer radicalcyclisation of unactivated alkyl bromides was realized by using a catalytic system of CuBr and Me6-TREN. This protocol is applicable to the preparation of five-membered rings from unsaturated primary and secondary bromides.
Treatment of 1,6-dienes and enynes with FeCl3 or Fe(Pc) in the presence of NaBH4 and air or O-2 causes radical cyclization to give five-membered carbo or heterocyclic compounds, Into which a halogen atom or hydroxyl group was introduced.