Use of Cyclohexa-2,5-Dien-1-Yl-Silanes as Precursors for Gaseous Hydrosilanes

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This patent describes a novel method for generating hydrosilanes in solution by using cyclohexa-2,5-dien-1-yl-silanes as precursors and a strong Lewis acid as catalyst. These generated hydrosilanes can then be used to perform hydrosilylation reactions on alkenes and carbonyl compounds, efficiently forming silicon-carbon and silicon-oxygen bonds. The process avoids the direct handling of hazardous gaseous hydrosilanes, as the precursor silanes are more stable and can release the reactive hydrosilane under controlled conditions.

Use CasesContent extracted from patent full text and abstract with AI.

• Synthesis of organosilicon compounds in chemical and pharmaceutical industries.
• Functionalization of alkenes and carbonyl compounds via hydrosilylation for materials science.
• Manufacturing of silicon-based materials and intermediates for electronics and coatings.
• Safe laboratory procedures for hydrosilane delivery without handling dangerous gaseous reagents.
• Production of silanes for cross-linking agents in polymer chemistry.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables the safe and controlled generation of hydrosilanes, minimizing handling of hazardous gases.
• Facilitates high-yield hydrosilylation of alkenes and carbonyls, increasing process efficiency.
• Reduces reliance on expensive or toxic transition metal catalysts—uses Lewis acids instead.
• Allows easy removal of benign by-products (arene solvents), simplifying purification.
• Provides access to a wide range of hydrosilane derivatives for diverse applications.
• Operates under mild conditions, making it compatible with sensitive substrates.

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Patent Abstract

The invention relates to the use of cyclohexa-2,5-dien-1 -yl-silanes of general formula (I), for generation of hydrosilanes in solution using a strong Lewis acid. This way, e.g., alkenes or carbonyl compounds can be hydrosilylated in good yields using the cyclohexa-2,5-dien-1 - yl-silanes of general formula I as transfer hydros! lylating agents in the presence of a strong Lewis acid as catalyst with concomitant formation of an arene solvent.