[GRAPHICS]The radical-initiated beta -ketoalkylation of haloalkanes with tributylstannyl enolates is described. Stannyl enolates derived from aromatic ketones are reactive toward the homolytic beta -ketoalkylation of simple haloalkanes as well as those activated by an electron-withdrawing group. The reactivity of stannyl enolates as radical alkylating agents can be utilized for an efficient three-component coupling reaction among stannyl enolates, haloalkanes, and electron-deficient alkenes.
Four-component radical-dual-difunctionalization (RDD) and decarbonylative alkylative peroxidation of two different alkenes with aliphatic aldehydes and TBHP
作者:Ren-Xiang Liu、Feng Zhang、Yong Peng、Luo Yang
DOI:10.1039/c9cc05764a
日期:——
of a single alkene to radical-dual-difunctionalization of twodifferentalkenes! Abundant aliphatic aldehydes were readily decarbonylated into alkyl radicals for the cascade construction of C(sp3)–C(sp3), C(sp3)–C(sp3) and C(sp3)–O bonds via double radical addition and radical–radical coupling, following the intrinsic nucleophilic/electrophilic reactivity of both the radicals and alkenes.