Propylene Glycol CAS 57-55-6 Applications

Product Description:
Trimethylsulfonium bromide is a white, crystalline solid and a quaternary sulfonium salt. It consists of a positively charged trimethylsulfonium cation ([ (CH3)3S ]+) and a bromide anion (Br-). This compound is a highly soluble ionic salt in water and polar organic solvents.

It is primarily valued in organic chemistry as a precursor for generating the dimethylsulfonium methylide (or similar ylides), which are powerful nucleophiles and versatile reagents for a variety of synthetic transformations. These ylides are particularly useful in cyclopropanation reactions, epoxidation of carbonyl compounds (the Corey-Chaykovsky reaction), and in ring expansion reactions.

Key Applications:

Organic Synthesis: Crucial precursor for the in situ generation of sulfonium ylides (e.g., dimethylsulfonium methylide), which are used as powerful reagents for:

Corey-Chaykovsky Reaction: For the epoxidation of aldehydes and ketones, and the cyclopropanation of α,β-unsaturated carbonyl compounds.

Cyclopropanation: Formation of cyclopropane rings.

Synthesis of Heterocycles: Involved in the formation of various three-membered heterocyclic rings.

Methylating Agent: Can act as a source of a methyl group in certain reactions, although less common than other methylating agents.

Phase Transfer Catalyst (PTC) Component: In some specific applications, quaternary ammonium salts are used as PTCs; sulfonium salts can sometimes serve similar roles or be used in conjunction.

Research & Development: Used extensively in academic and industrial laboratories for developing new synthetic methodologies and synthesizing complex organic molecules.

Trimethylsilylacetylene Packaging and Shipping 

25kg/bag

customized according to customer needs.

Trimethylsilylacetylene Storage

It should be stored in a clean, dry and cool place, preventing from sunlight, rain.