A light-induced,nickel-catalyzed three-component arylsulfonation of 1,3-enynes in the absence of photocatalyst is reported.This methodology exhibited mild conditions,broad scope and high efficiency,and its synthetic u...A light-induced,nickel-catalyzed three-component arylsulfonation of 1,3-enynes in the absence of photocatalyst is reported.This methodology exhibited mild conditions,broad scope and high efficiency,and its synthetic utility has been demonstrated by a concise total synthesis of sulfone-containing drug molecule.Detailed mechanistic studies indicated that this light induced nickel catalysis is autopromoted by in situ produced allene,which plays a key role as co-ligand in the photoactive excited state Ni(Ⅰ)species for the LMCT process.The detailed elucidation of this light-induced nickel catalytic cycle may shed some lights on the exploitation of new catalytic activity and establishment of novel methods.展开更多
A photoredox/nickel-catalyzed selective 1,4-arylsulfonation of 1,3-enynes to access structurally diverse sulfone-containing allenes has been established.This radical cascade transformation featured easy manipulation,m...A photoredox/nickel-catalyzed selective 1,4-arylsulfonation of 1,3-enynes to access structurally diverse sulfone-containing allenes has been established.This radical cascade transformation featured easy manipulation,mild conditions,low catalyst loading,broad substrate scope,and large-scale synthesis.The preliminary mechanistic studies indicated a possible radical-relay process enabled by the radical capture of nickel(0)species.展开更多
基金supported by the National Science Foundation of China(21602213,21971228)。
文摘A light-induced,nickel-catalyzed three-component arylsulfonation of 1,3-enynes in the absence of photocatalyst is reported.This methodology exhibited mild conditions,broad scope and high efficiency,and its synthetic utility has been demonstrated by a concise total synthesis of sulfone-containing drug molecule.Detailed mechanistic studies indicated that this light induced nickel catalysis is autopromoted by in situ produced allene,which plays a key role as co-ligand in the photoactive excited state Ni(Ⅰ)species for the LMCT process.The detailed elucidation of this light-induced nickel catalytic cycle may shed some lights on the exploitation of new catalytic activity and establishment of novel methods.
文摘A photoredox/nickel-catalyzed selective 1,4-arylsulfonation of 1,3-enynes to access structurally diverse sulfone-containing allenes has been established.This radical cascade transformation featured easy manipulation,mild conditions,low catalyst loading,broad substrate scope,and large-scale synthesis.The preliminary mechanistic studies indicated a possible radical-relay process enabled by the radical capture of nickel(0)species.
