的Stille的水溶性的芳基和乙烯基卤化物与烷基连接,芳基- ,和vinyltrichlorostannane衍生物(RSnCl 3)使用所生成的催化剂在水溶液中进行原位从的PdCl 2和KOH具有和不具有添加的PHP(米-C 6 H 4 SO 3 Na)2。尽管描述了协议的一些局限性,但收率通常良好或优异。
A simple, high-yieldsynthesis is described that leads to the sodium salt of monosulfonated triphenylphosphane (TPPMSNa) as a pure product in large quantities without complicated workup techniques, The single-crystal X-ray structure of TPPMSNa center dot 2.5H(2)O is reported. The structure is built up by alternating layers of aquated sodium sulfonate units and hydrophobic triphenyl units. Thermogravimetric
Heterolytic Splitting of Allylic Alcohols with Palladium(0)−TPPTS in Water. Stabilities of the Allylphosphonium Salt of TPPTS and of the Ionic Complex [Pd(η<sup>3</sup>-allyl)(TPPTS)<sub>2</sub>]<sup>+</sup>
temperature has an adverse effect on the complex stability: palladium precipitates at 80 °C, even at pH 7, with the formation of a small amount of propylene. The addition of [(allyl)Ar3P]+ increases the stability of [Pd(η3-allyl)(TPPTS)2]+. Above pH 10, [(allyl)Ar3P]+ decomposes into OTPPTS and propylene by reaction with OH−. At lower pH, [(allyl)Ar3P]+ is slowly isomerized into [(propenyl)Ar3P]+, which further
A newseries of sulfonated triarylphosphines with a strong π-acceptor character were synthesized by direct sulfonation of trifluoromethylated neutral phosphines. Due to the deactivating character of the trifluoromethyl group, high oleum concentration and the use of boric acid to prevent phosphine oxidation were required for the sulfonation step. The new sulfonated phosphines are water-soluble and more
Provided is a simple and industrially advantageous method for producing 2,7-octadien-1-ol, in which an expensive palladium catalyst is recovered in high efficiency and the reaction rate per atom of palladium is enhanced. Specifically, provided is a method for producing 2,7-octadien-1-ol by subjecting butadiene and water to a telomerization in the presence of a palladium catalyst containing a water-soluble triarylphosphine having two or more sulfonate groups in the molecule and a palladium compound, a tertiary amine, and carbon dioxide, including a step of mixing the telomerization solution obtained by the telomerization with an organic solvent having a dielectric constant at 25° C. of 2 to 18, followed by carrying out phase separation in the presence of carbon dioxide, thereby obtaining 2,7-octadien-1-ol from an organic phase while recovering an aqueous phase including the palladium catalyst. By this production method, the selectivity for 2,7-octadien-1-ol is enhanced.