Reaction of polymer-supported selenium bromide with ortho allylated phenols and subsequent cleavage from the polymer by treatment of methyl iodide efficiently afforded 2-iodomethyl-2,3-dihydrobenzofurans in good yields and high purities. The polymeric reagent can be regenerated and reused as environmentally friendly reagent.
聚合物支撑的
溴化硒与正交烯丙基
酚反应,然后通过
碘甲烷处理从聚合物中裂解,可以高效地得到 2-
碘甲基-
2,3-二氢苯并呋喃,产量高,纯度高。这种聚合物试剂可作为环保试剂再生和重复使用。