Site‐Selective C(<i>sp</i><sup>3</sup>)‐H Alkenylation Using Decatungstate Anion as Photocatalyst
Yi‐Ting Wang, Yi‐Lun Shih, Yen‐Ku Wu, Ilhyong Ryu
Abstract
Abstract Site‐selective C( sp 3 )‐H alkenylation was achieved under photo‐irradiation in the presence of a catalytic amount of decatungstate anion, W 10 O 32 4− . In this reaction, the radical addition/β‐scission sequence is successfully combined with photocatalytic C( sp 3 )‐H functionalization. The reaction using weaker C−H bonds such as those in THF revealed that the benzenesulfonyl radical itself underwent HAT directly from the C−H bond, and a decatungstate anion participated in a chain‐repairing step. magnified image
Topics & Concepts
ChemistryPhotocatalysisIonPhotochemistryBond cleavageIrradiationCatalysisSurface modificationMedicinal chemistryOrganic chemistryPhysical chemistryPhysicsNuclear physicsCatalytic C–H Functionalization MethodsPolyoxometalates: Synthesis and ApplicationsRadical Photochemical Reactions