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Olefin Functional Trialkoxy Silane
Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.
Alkenylsilane Cross-Coupling Agent
The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.
Boiling Point: 146-8°
EINECS Number: 219-855-8
Molecular Weight: 162.26
Specific Gravity: 0.963
Flashpoint: 46°C (115°F)
HMIS Key: 3-2-1-X
Hydrolytic Sensitivity: 7: reacts slowly with moisture/water
Refractive Index: 1.4036
Application: Allylation of ketones, aldehydes and imines with dual activation of a Lewis Acid and fluoride ion.1
Used in the regioselective generation of the thermodynamically more stable enol trimethoxysilyl ethers, which in turn are used in the asymmetric generation of quaternary carbon centers.2
Converts arylselenyl bromides to arylallylselenides.3
Allylates aryl iodides.4
Reference: 1. Yamasaki, S. et al. J. Am. Chem. Soc. 2002, 124, 6536.
2. Ichibakase, T. et al. Tetrahedron Lett. 2008, 49, 4427.
3. >Bhadra, S. et al. J. Org. Chem. 2010, 75, 4864.
4. Mowery, M. E.; DeShong, P. J. Org. Chem. 1999, 64, 1684.
Fieser: F&F: Vol 18, p 14; Vol 19, p 360; Vol 20, p 85; Vol 21, p 3, Vol 12, p 395
Additional Properties: Adhesion promoter for vinyl-addition silicones