Hydrosilylation of cyclohexene and allyl chloride with trichloro-, dichloro(methyl)-, and chlorodimethylsilanes in the presence of Pt(0) complexes
                                
                                    
                                        作者:Z. V. Belyakova、E. A. Chernyshev、P. A. Storozhenko、S. P. Knyazev、G. N. Turkel’taub、E. V. Parshina、A. V. Kisin                                    
                                    
                                        DOI:10.1134/s1070363206060120
                                    
                                    
                                        日期:2006.6
                                    
                                    Hydrosilylation of cyclohexene and allyl chloride in the presence of Pt(0) complexes with tetra-methyidivinyldisiloxane (Karstedt catalyst) and hexavinyldisiloxane was studied. It was shown that these catalysts are much more active in the hydrosilylation of cyclohexene with trichloro-, dichloro(methyl)-, and chlorodimethylsilane than the Pt(II)-containing Speier catalyst. In the hydrosilylation of allyl chloride in the presence of Pt(0) complexes, the ratio of the fraction of addition products to the fraction of reduction products increases from 5.7 (Speier catalyst) to 10-16. Quantum-chemical calculations showed that Pt(0) complexes are more active than Pt(II) complexes on the stage of formation of platinum silicon hydride complexes.