STUDIES IN SILICO-ORGANIC COMPOUNDS. XIII. ADDITIONAL CHEMICAL PROPERTIES OF TRIALKOXYSILANES^{1, 2}

Studies in Silico-Organic Compounds. XXIV. Hydrolysis and Disproportionation of α- and β-Chloroethyltrialkoxysilanes

“…Radical interchange was found to take place between two different silicoorthoesters in 1865 by Friedel and Crafts (8). Analogous reactions may be found, of later date (3)(4)(5).…”

Surface and Structural Modification of Nanostructured Mesoporous Silicon Oxycarbide Glasses Obtained from Preceramic Hybrids Aged in NH4OH

“…During thermal decomposition, the larger number of silanol groups leads to a higher condensation degree and thus, the evolution of the siloxane‐derived species occurs a few degrees later than it occurs in the reference material. Moreover, because of this disproportionation of the TREOS moieties catalyzed by the strong basic conditions, gaseous SiH 4 is formed as a product of the reaction . The evolution of these gaseous species coming from inside the hybrid network could be responsible for the large SSA obtained in these materials.…”

“…Moreover, because of this disproportionation of the TREOS moieties catalyzed by the strong basic conditions, gaseous SiH 4 is formed as a product of the reaction. 54,55 The evolution of these gaseous species coming from inside the hybrid network could be responsible for the large SSA obtained in these materials.…”

Steric Hindrance in Highly-Substituted Organosilicon Compounds. Iii. The Preparation and Properties of Some Triarylsilyl Ethers

“…The formation of the ethoxysilane and the non-formation of the reduction product were confirmed in a larger run (10 g. of silanol) by Dr. G. E. Dunn. Dr. Dunn was also able to show that, when a five-fold excess of anhydrous zinc chloride is used in a reaction lasting 15 minutes, hexaphenyldisiloxane is formed in small amounts; no ethoxysilane could be isolated in this case. When a five-fold excess of zinc chloride was used in a reaction lasting 4 hours, however, neither hexaphenyldisiloxane nor the ethoxysilane could be isolated.…”

“…Furthermore, it was shown that tri-o-tolylbenzyloxysilane does not react with methanol under the conditions of the above experiments. Alkoxyl group exchanges have been observed frequently with other types of organosilicon compounds (14,15).…”