(2-Ethoxy-2-oxoethyl)dimethylsulphonium Bromide丨CAS 5187-82-6

Applications of (2-Ethoxy-2-oxoethyl)dimethylsulphonium bromide丨CAS 5187-82-6

1. Wittig-Type Olefination Reagent

This compound serves as a sulfonium ylide precursor, commonly used in Johnson–Corey–Chaykovsky reactions.

It enables the conversion of carbonyl compounds into epoxides or cyclopropanes, depending on the reaction conditions.

2. Epoxidation and Cyclopropanation

Acts as a nucleophilic carbon source in epoxidation of aldehydes and ketones, yielding epoxides with good stereoselectivity.

In the presence of appropriate bases, the sulfonium salt forms ylides that react with α,β-unsaturated carbonyls to form cyclopropanes.

3. Synthetic Intermediate

Used in the synthesis of heterocycles, pharmaceutical intermediates, and fine chemicals.

Valuable in constructing three-membered ring systems, which are common motifs in biologically active molecules.

Benefits

✅ Efficient Ylide Formation

Easily generates sulfur ylides under mild base conditions, making it a versatile and efficient reagent for epoxide formation.

✅ High Selectivity

Reactions involving this compound often exhibit high chemo- and stereoselectivity, which is advantageous in synthetic organic chemistry.

✅ Mild Reaction Conditions

Suitable for use at room temperature or slightly elevated temperatures, preserving sensitive functional groups.

✅ Versatile Applications

Applicable in academic research and industrial process development, especially for synthesizing pharmaceutical scaffolds and natural product analogs.

Summary

(2-Ethoxy-2-oxoethyl)dimethylsulphonium bromide丨CAS 5187-82-6 is a valuable sulfonium salt widely used in epoxidation and cyclopropanation reactions. As a ylide precursor, it plays a central role in constructing strained ring systems, making it an indispensable tool in modern synthetic organic chemistry. Its efficiency, selectivity, and compatibility with various substrates make it a preferred reagent for both research and development.