Alkali Metal-Hydroxide-Catalyzed C(sp)-H Bond silylation

Area of Science:

• Organic Chemistry
• Catalysis
• Organosilicon Chemistry

Background:

• C-H bond functionalization is a key area in synthetic chemistry.
• Developing efficient and selective methods for forming carbon-silicon bonds is crucial for creating novel organosilane building blocks.

Purpose of the Study:

• To disclose a mild, scalable, and chemoselective catalytic protocol for C(sp)-Si bond construction.
• To establish a single-step method for synthesizing organosilanes via cross-dehydrogenative C-H functionalization.

Main Methods:

• Utilized catalytic cross-dehydrogenative C-H functionalization.
• Employed a range of alkyne and hydrosilane coupling partners.
• Investigated sodium hydroxide (NaOH) and potassium hydroxide (KOH) as catalysts.

Main Results:

• Successfully constructed C(sp)-Si bonds in a single step.
• Demonstrated substantial scope in both alkyne and hydrosilane substrates.
• Identified NaOH and KOH as highly effective and optimal catalysts for the transformation.

Conclusions:

• The developed protocol provides a mild, scalable, and chemoselective route to organosilanes.
• The method enables access to diverse organosilane building blocks and facilitates the discovery of new synthetic strategies.
• Simple inorganic bases like NaOH and KOH are remarkably effective catalysts for this C-H functionalization.