Regioselective synthesis of arylsulfonyl heterocycles from bromoallyl sulfones <i>via</i> intramolecular Heck coupling reaction
作者:Deepak Yadav、Krishna、Sunil K. Sharma、Rajeev S. Menon
DOI:10.1039/d0ob01623c
日期:——
endowed with arylsulfonyl groups were prepared in two steps from 2-bromoallyl sulfones. ortho-Halosulfonamides and ortho-iodophenol reacted with 2-bromoallyl sulfones in the presence of cesium carbonate to furnish products resulting from a formal vinylic substitution reaction. Palladium-catalyzed intramolecular Heck reaction of these adducts furnished sulfonylated indoles, benzosultams and benzofurans