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Showing 1 to 8 of 8 for “"Silicon tetrachloride"”.
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Chemical vapor deposition of silicon dioxide by the oxidation of (A) silicon tetrachloride, (B) silane gas
The service life of furnace refractories could be enhanced by coating them with a thin, dense layer of refractory material which can resist adverse furnace environments. The objective of the present research was to obtain a pure coating of silica, (SiO₂), on the surface of alurnino-silicate …
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Studies in Asymmetric Catalysis: Lewis Base catalyzed/Lewis Acid Mediated Aldol Reactions of Ketone- and Amide Derived Nucleophiles
Additionally, the use of the silicon tetrachloride---chiral phosphoramide system has proven a competent catalyst for highly selective vinylogous aldol reactions between dienolates derived from a variety of alpha,beta-unsaturated carbonyl compounds to aldehydes. These reactions provided high levels …
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Studies in Asymmetric Catalysis: Lewis Base Catalyzed, Enantioselective Addition of Trimethylsilyl Cyanide, Trimethylsilyltrifluoromethane, and Glycolate-Derived Silyl Ketene Acetals to Aldehydes
A catalytic system involving silicon tetrachloride and a chiral, Lewis basic bisphosphoramide catalyst is effective for the addition of glycolate-derived silyl ketene acetals to aldehydes. The sense of diastereoselectivty could be modulated by changing the size of the substituents on the silyl …
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Lewis Base Activation of Lewis Acids in Asymmetric Aldol Reactions of Silyl Ketene Acetals
… with aldehydes. The weakly acidic species, silicon tetrachloride (SiCl 4), is activated by binding of a strongly Lewis basic chiral phosphoramide, leading to in situ formation of a chiral silyl cation. This species has proven a competent catalyst for the aldol addition of acetate-, …
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Synthesis, study and application of silyl ketene imines in Lewis base catalyzed carbonyl addition
… to carbonyl compounds. In the presence of silicon tetrachloride and a catalytic amount of chiral bis-phosphoramide, N-silyl ketene imines underwent extremely rapid additions to aldehydes, providing aldol products containing quaternary stereogenic centers in excellent yields and …
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The development of a process for the production of phenylchlorosilanes
The silicone (organosilicon) polymere are a new and remarkable development of the chemical industry, Filling the void between organic and inorganic products, they find a great variety ef uses where their outstanding properties of heat and moisture resistance, general chemical inertness, and high …
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Asymmetric Lewis base catalysis: I. Lewis base catalyzed halogenation and development of an enantioselective bromocycloetherification reaction; II. enantioselective addition of silyl ketene imines to carbonyl electrophiles
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-06-15T13:39:00Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Thesis-6-12.docx: 11084823 bytes, checksum: 0609048b408ae3adf1f485e3a9dde5d3 (MD5) Burk_Matthew.pdf: 14255171 bytes, …