Formal [5+1] annulation reactions of dielectrophilic peroxides: facile access to functionalized dihydropyrans
作者:Chen Zhong、Qi Yin、Yukun Zhao、Qinfeng Li、Lin Hu
DOI:10.1039/d0cc05565d
日期:——
A general [5+1] annulation reaction, which utilized 4-bromo- or 4-mesyloxy-but-2-enyl peroxides as unique five-atom bielectrophilic synthons to participate in the C–C and the subsequent umpolung C–O bond-forming reactions with C1 nucleophiles, has been developed for the facilesynthesis of 2,2-disubstituted dihydropyrans in high yields under mild basic conditions. The dihydropyrans, which are readily