- Procatalyst Composition with Silyl Glutarate and Method
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Disclosed are procatalyst compositions having an internal electron donor which includes a silyl glutarate and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit strong activity and produce propylene-based olefins with high isotacticity.
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Page/Page column 11
(2010/11/03)
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- DIISOPROPYLSILYL DITRIFLATE AND DI-tert-BUTYLSILYL DITRIFLATE: NEW REAGENTS FOR THE PROTECTION OF DIOLS
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Diisopropylsilyl ditriflate and di-tert-butylsilyl ditriflate, each available from the appropriate dialkylchlorosilane and triflic acid, react with 1,2-, 1,3-, and 1,4-diols usually at 25 deg C in the presence of 2,6-lutidine to provide the corresponding dialkylsilylene derivatives in high yield.These derivatives, which are readily deprotected under mild conditions, can be utilized for selective reactions of polyhydroxy compounds.
- Corey, E. J.,Hopkins, Paul B.
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p. 4871 - 4874
(2007/10/02)
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