18148-76-0Relevant academic research and scientific papers
Generation and capture of alkylchlorosilanones
Basenko,Voronkov,Gebel
, p. 363 - 366 (2007/10/03)
Alkyltrichlorosilanes react with DMSO (molar ratio 1 : 1, 0 °C) to give cyclic oligoalkylchlorosiloxanes of the general formula [R(Cl)SiO]n (where R = Me or Et; n = 3-6). With an excess of alkyltrichlorosilane (2 : 1), linear oligoalkylchlorosiloxanes Cl[R(Cl)SiO]mSiCl2R (where R = Me or Et; m = 1-5) are also formed. In the presence of hexamethyldisiloxane (molar ratio Cl3SiR : DMSO : (Me3Si)2O = 1 : 1 : 2, 20 °C), the reaction products are both cyclic and linear oligoalkyl(trimethylsilyloxy)siloxanes [R(Me3SiO)SiO]n (n = 3-5) and Me3Si[OSi(OSiMe3)R]mOSiMe3 (m = 1-3), respectively. The reaction of DMSO with trichloro(vinyl)silane and hexamethyldisiloxane occurs in a similar manner. A plausible scheme of formation of the final products via intermediate alkylchlorosilanones RClSi=O and alkyl(trimethylsilyloxy)silanones is discussed.
EQUILIBRIA BETWEEN MexSiCl4-x, x = 3,2,1,0 AND ALKYL CARBOXYLATE ESTERS
Mbah, Godfrey C.,Speier, John L.
, p. 77 - 82 (2007/10/02)
At 150 deg C equilibria are established between chlorosilanes and alkyl esters according to the equation: MexSiCl4-x + RCOOR' MexSi(O0.5)y(OOCR)z-yCl4-x-y-z + yRCOCl + zR'Cl.When x = 3, y = 0, z = 0.56; when x = 2, y = 0.26, z = 0.98.When x = 1, y = z = 0.56; when x = 0, y = z = 0.53.Lewis acid salts such as ZnCl2 or FeCl3 are effective catalysts for the reactions leading to mixtures of these compounds.
