Popis: |
Polysubstituted furans are versatile building blocks in organic synthesis and are widely spread over in variety of natural products, pharmaceuticals and functional materials. Herein, we report a convenient, facile and economic approach for the synthesis of polysubstituted furans through a tandem O−H insertion/[3,3]-sigmatropic rearrangement of rhodium carbenoids with easily available furfuryl alcohols. This protocol is characterized by its operational simplicity, high efficiency with excellent yields, broad substrate scope and greater functional group tolerance. |