Process for the preparation of olefinic silanes and siloxanes
申请人:Union Carbide Corporation
公开号:US04668812A1
公开(公告)日:1987-05-26
A novel synthesis for silanes and siloxanes containing olefinic bonds wherein an aminosilane, siloxane alkoxysilane or alkylalkoxysilane and an olefin undergo a dehydrocondensation in the presence of a rhodium or ruthenium catalyst.
Polymer blends containing polymers or low molecular weight compounds containing groups of the formula ≡Si—O—C(R
1
)(R
2
)(R
3
) where R
1
, R
2
, and R
3
are hydrogen, halogen, or an organic radical, not more than two of which are hydrogen, may be cured thermally or photochemically to produce solvent resistant polymers. The curing may take place in the absence of water.
Complementary Cooperative Catalytic Systems in the Aerobic Oxidation of a Wide Range of Si−H‐Reagents to Si−OH‐Products: From Monomers to Oligomers and Polymers
作者:Irina K. Goncharova、Rinat S. Tukhvatshin、Roman A. Novikov、Alexander D. Volodin、Alexander A. Korlyukov、Valentin G. Lakhtin、Ashot V. Arzumanyan
DOI:10.1002/ejoc.202200871
日期:2022.9.20
cooperative [M]-/Organo-catalytic systems in aerobic Si−H− to Si−OH-group oxidation showed the efficiency of the two “complementary” catalytic systems, based on earth-abundant [M]-catalysts and inexpensive commercially available organic catalysts. [Co]/NHSI (A) system made it possible to oxidize a wide range of monomers but failed in the case of oligomeric and polymeric substrates. This problem was solved