- 1,1,1,5,5,5-HEXAMETHYLTRISILOXANE: PREPARATION AND SOME REACTIONS
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1,1,1,5,5,5-Hexamethyltrisiloxane (I) was prepared by reaction of (Me3SiO)2Mg or of Me3SiOH with dichlorosilane.Its selective chlorination to give mostly Me3SiOSiHClOSiMe3 and only a small amount of Me3SiOSiCl2OSiMe3 was effected by its PdCl2-catalyzed reaction with CCl4.Photolysis of compound I gave H(Me3SiO)2SiSi(OSiMe3)2H in 30percent yield, as well as polymer.
- Seyferth, Dietmar,Prud'homme, Christian C.,Wang, Wei-Liang
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- ZUR SYNTHESE VON SILOXANEN III. INDUKTIVE SUBSTITUENTENKONSTANTEN FUER SILOXYRESTE; 29Si-NMR-SPEKTROSKOPISCHE UNTERSUCHUNGEN
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For a series of siloxy groups at the silicon atom the inductive substituent constants ?* and ?1 have been determined by means of 29Si NMR spectroscopy.
- Scheim, U.,Grosse-Ruyken, H.,Ruehlmann, K.,Porzel, A.
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- Aerobic Co or Cu/NHPI-catalyzed oxidation of hydride siloxanes: Synthesis of siloxanols
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A highly efficient preparative method for the synthesis of siloxanols based on aerobic Co(OAc)2 or Cu(OAc)2/NHPI-catalyzed oxidation of hydride siloxanes using "green", commercially available, simple inexpensive reagents and mild reaction conditions has been proposed. This is a general reaction for the synthesis of mono-, oligo- and polymeric siloxanols with various structures (linear, branched and cyclic).
- Arzumanyan, Ashot V.,Goncharova, Irina K.,Novikov, Roman A.,Milenin, Sergey A.,Boldyrev, Konstantin L.,Solyev, Pavel N.,Tkachev, Yaroslav V.,Volodin, Alexander D.,Smol'Yakov, Alexander F.,Korlyukov, Alexander A.,Muzafarov, Aziz M.
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supporting information
p. 1467 - 1471
(2018/04/12)
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- Symetrical hydroxyphenyl-s-triazine compositions
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The invention is concerned with compounds of formula I: STR1 which are useful as sun screening agents.
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- Method for the cleavage of organic siloxanes, and products and applications thereof
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A method for the cleavage of organosiloxanes with chlorosilanes in the presence of ferric chloride and hydrogen chloride as catalysts resulting in chloroalkyl silanes or chloroaryl silanes, and organosiloxanes, which are characterized by one or more --O--Si--R3 groups, (R=alkyl or aryl), which are directly bound to a silicon atom which in turn is bound either to the same grouping or to an alkyl or aryl moiety.
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