Oxidative Addition of Aryl and Benzyl Trifluoroacetates to Zerovalent Palladium Complexes with Two Modes of C–O Bond Cleavage Processes
作者:Kazuhiro Nagayama、Isao Shimizu、Akio Yamamoto
DOI:10.1246/bcsj.72.799
日期:1999.4
The aryl trifluoroacetates oxidatively added to a zerovalent palladium complex 2a with acyl-O bondcleavage under mild conditions to give the corresponding trans-(aryloxo)(trifluoroacetyl)palladium complexes 3a—3c. But 4-nitrophenyl trifluoroacetate reacted with 2a to yield cis-[Pd(OC6H4-4-NO2)2(PMe3)2] 3d, which was produced with C–O bond activation followed by disproportionation reaction. In contrast
Structure and Facile Unimolecular Twist-Rotation of <i>cis</i>-Bis(silyl)bis(phosphine)platinum and <i>cis</i>-Bis(stannyl)bis(phosphine)palladium Complexes
The structures and fluxional behavior of two cis-bis(silyl)bis(phosphine)platinum complexes (2), cis-[Pt(SiPh2Me)2(PMe2Ph)2] (2a) and cis-[Pt(SiFMe2)2(PEt3)2] (2b), and two cis-bis(stannyl)bis(phosphine)palladium complexes (3), cis-[Pd(SnMe3)2(PMe3)2] (3a) and cis-[Pd(SnMe3)2(PMePh2)2] (3b), were examined. The molecular structures of 2a and 3a were determined by X-ray crystallographic analysis. The
Preparation of Acyl(carboxylato)bis(tertiary phosphine)palladium(II) Complexes by C–O Bond Cleavage of Carboxylic Anhydrides on Interaction with Palladium(0) Complexes. Catalytic Hydrogenation of Carboxylic Anhydrides to Aldehydes by Palladium Complexes
give the corresponding trans-acyl(carboxylato)palladium complexes 3a—3h. Cyclic acid anhydrides also added to 2a to yield trans-acyl(carboxylato)palladium complexes 4a—4c, while reaction of 2a with phthalic anhydride afforded the palladalactone 4d generated via oxidative addition followed by decarbonylation. The acetyl(acetato)palladium complex 3a reacted with dihydrogen or formic acid to give acetaldehyde