Pd-Catalyzed P-Arylation of Triarylantimony Dicarboxylates with Dialkyl H-Phosphites without a Base: Synthesis of Arylphosphonates

摘要

The reaction of triarylantimony diacetates [Ar₃Sb(OAc)₂] with dialkyl H-phosphites [H-PO(OR)₂] in the presence of a Pd(PPh₃)₄ (5?mol%) catalyst led to the formation of arylphosphonates in moderate to excellent yield under base-free conditions. This reaction is the first example of carbon–phosphorus bond formation by using an organoantimony compound as a pseudo-halide.