Visible-light induced allylation of benzyl halide using CdS nanocrystallites

摘要

CdS nanocrystallites catalyzed photoallylation of benzyl halide (BZX, X=Br or Cl) with allyltributyltin in N, N-dimethylformamide (DMF) under visible-light irradiation, giving 4-phenyl-1-butene. The reaction proceeds via bimolecular coupling between benzyl radical and allyl radical, which are formed by photo-excited electrons and holes pairs on the surface of quantized CdS nanocrystallites. [References: 9]