The Claisen Rearrangement of 2-Phenylsulfinyl-2-propenyl Phenyl Ethers –A New Route to Functionalized Phenols and 2-Methylbenzofurans
作者:Muhammad Akram Khan
DOI:10.1246/bcsj.64.3682
日期:1991.12
ls is reported. The latter compounds underwent Michael reactions with a variety of nucleophiles to provide functionalized phenolic adducts. O-Alkylation of the initial rearrangement products with 3-bromo-2-phenylsulfinyl-1-propene and 2,3-dibromo-l-propene followed by [3,3] sigmatropic rearrangement provided a promising route to 7-substituted 2-methylbenzofurans.
报道了迄今为止未知的 2-苯基亚磺酰基-2-丙烯基苯基醚到相应的 2-(2-苯基亚磺酰基-2-丙烯基) 苯酚的克莱森重排。后一种化合物与各种亲核试剂进行迈克尔反应以提供功能化的酚类加合物。用 3-bromo-2-phenylsulfinyl-1-propene 和 2,3-dibromo-l-propene 对初始重排产物进行 O-烷基化,然后 [3,3] sigmatropic 重排为 7-取代的 2-甲基苯并呋喃提供了一条有希望的途径.