Kinetics of the gas-phase addition reactions of trichlorosilyl radicals. Part 3.—Additions to 2-olefins
作者:Takaaki Dohmaru、Yoshio Nagata
DOI:10.1039/f19827801141
日期:——
The following Arrhenius parameters for the forward and reverse steps of trichlorosilyl radicaladditions to trans-but-2-ene, cis-but-2-ene, cis-pent-2-ene, 2-methyl-but-2-ene and cyclopentene have been obtained by a competitive method. The relevant elementary reactions are ·SiCl3+ CH3COCH3→(CH3)2ĊOSiCl3(3), ·SiCl3+CC⇌Ċ—[graphic omitted]—SiCl3(5, –5), and —[graphic omitted]—SiCl3+ HSiCl3→ H[graphic
A novel tertiary alkylsilane is disclosed, which is useful as a variety of starting materials such as for photoreactive materials including semiconductor materials, insulative materials and photoresists, polymerization initiators and silicone-based ceramics precursors and is contributive to the safe and efficient production of high grade semiconductors.
Three stable silanetriols with increasing steric protection of the silicon atom have been tested for inhibition of acetylcholinesterase (AChE). For all tested silanetriols we found reversible inhibition of the AChE activity at a 100 mu M concentration. The highest inhibition rate was found for the sterically least hindered cyclohexylsilanetriol with 45% inhibition relative to galanthamine hydrobromide for which an IC50 value of 121 +/- 3 mu M was determined as well. The cytotoxicity of the silanetriols used was found to be negligible at concentrations relevant for inhibition. (C) 2010 Elsevier Ltd. All rights reserved.