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Methyltrichlorosilane undergoes hydrolysis, shown in idealized form here: [1] MeSiCl 3 + 3 H 2 O → MeSi(OH) 3 + 3 HCl. The silanol is unstable and will eventually condense to give a polymer network: MeSi(OH) 3 → MeSiO 1.5 + 1.5 H 2 O. Methyltrichlorosilane undergoes alcoholysis (reaction with alcohol) to give alkoxysilanes.
Methyltrichlorosilane can be used to induce branching and cross-linking in PDMS molecules, while chlorotrimethylsilane serves to end backbone chains, limiting molecular weight. Other acid-forming species, especially acetate , can replace chlorine in silicone synthesis with little difference in the chemistry of the finished polymer.
Trichlorosilane can cause hazardous chemical reactions with moisture and humidity alone, and should be handled and stored under inert gas. [8] Spills of trichlorosilane may be neutralized using a 1-1 ratio of sodium hydroxide , or a 2-1 ratio of sodium bicarbonate to trichlorosilane. [ 9 ]
[1] Dichlorodimethylsilane is the major product of the reaction, as is expected, being obtained in about 70–90% yield. The next most abundant product is methyltrichlorosilane (MeSiCl 3), at 5–15% of the total. Other products include Me 3 SiCl (2–4%), MeHSiCl 2 (1–4%), and Me 2 HSiCl (0.1–0.5%). [1] The Me 2 SiCl 2 is purified by ...
Methyltrimethoxysilane is usually prepared from methyltrichlorosilane and methanol: CH 3 SiCl 3 + 3 CH 3 OH → CH 3 Si(OCH 3) 3 + 3 HCl. Alcoholysis of alkylchlorosilanes typically proceeds via an S N 2 mechanism. Inversion of the configuration is favored during nucleophilic attack when displacing good leaving groups, such as chloride. [3]
Reductions with hydrosilanes are methods used for hydrogenation and hydrogenolysis of organic compounds.The approach is a subset of ionic hydrogenation.In this particular method, the substrate is treated with a hydrosilane and auxiliary reagent, often a strong acid, resulting in formal transfer of hydride from silicon to carbon. [1]
The mechanism of the direct synthesis is not known. However, the copper catalyst is essential for the reaction to proceed. In addition to dimethyldichlorosilane, products of this reaction include CH 3 SiCl 3, CH 3 SiHCl 2, and (CH 3) 3 SiCl, which are separated from each other by fractional distillation. The yields and boiling points of these ...
The reaction of quadricyclane with DEAD is a 2σ + 2σ + 2π cycloaddition that on water takes place within 10 minutes at room temperature with 82% yield. The same reaction in toluene takes 24 hours at 80 °C with 70% yield. An emulsion reaction in fluorinated cyclohexane takes 36 hours and the neat reaction takes even longer (48 hours).