Ethynylmagnesium bromide is an organometallic compound classified as a Grignard reagent, which is characterized by the presence of a carbon-magnesium bond. It is typically a colorless to light yellow liquid or solid, depending on its form and purity. This compound is highly reactive, particularly with water and moisture, leading to the release of ethyne (acetylene) and the formation of magnesium hydroxide. Ethynylmagnesium bromide is used in organic synthesis, particularly for the introduction of ethynyl groups into various organic molecules, facilitating the formation of carbon-carbon bonds. Its reactivity allows it to participate in nucleophilic addition reactions, making it valuable in the synthesis of complex organic compounds, including pharmaceuticals and agrochemicals. Due to its reactivity, it must be handled under anhydrous conditions, typically in an inert atmosphere, to prevent decomposition and unwanted side reactions. Safety precautions are essential when working with this reagent, as it can be flammable and toxic.

Ethynylmagnesium bromide

4301-14-8: 0.5 M in THF, Acetylenemagnesium bromide, Bromoethynylmagnesium, Magnesium, bromoethynyl-, Ethynylmagnesium bromide

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

CAS 4301-14-8: Ethynylmagnesium bromide

Ethynylmagnesium bromide, 0.5M solution in THF, AcroSeal™

Ref: AC-43912