Pd-catalyzed P-arylation of triarylantimony dicarboxylates with dialkyl H-phosphites without a base: synthesis of arylphosphonates

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.

A Pd complex of a NNN pincer ligand supported on γ-Fe2O3@SiO2 as the first magnetically recoverable heterogeneous catalyst for C–P bond forming reactions

A Pd complex of the NNN pincer ligand supported on γ-Fe₂O₃@SiO₂ was used as a new catalyst for a phosphonation reaction.

Palladium-catalyzed desulfitative C–P coupling of arylsulfinate metal salts and H-phosphonates

An efficient desulfitative C–P coupling was accomplished with versatile arylsulfinate metal salts and H-phosphonates.

Nickel-catalyzed C-P coupling of aryl mesylates and tosylates with H(O)PR1R2

A method was developed for the nickel-catalyzed phosphonylation of aryl mesylates and tosylates with H(O)PR(1)R(2). To the best of our knowledge, this is the first example of nickel-catalyzed C-P coupling of aryl mesylates and tosylates. Most of the substrates gave moderate to good yields under our catalytic system.

Pd-catalyzed arylation reactions with phenol diazonium salts: application in the synthesis of diarylheptanoids

The first total synthesis of the natural product (3S,7R)-5,6-dehydro-de-O-methyl centrolobine and various analogues is reported, using a highly regio- and diastereoselective Mizoroki-Heck reaction of phenol diazonium salts and enantiopure dihydropyrans. The assigned relative configuration was confirmed by single-crystal X-ray structure analysis, but a revision of the absolute configuration is proposed based on polarimetric measurement.