Sulfoxide synthesis from sulfinate esters under Pummerer-like conditions

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• Sulfinate esters are versatile precursors in organic synthesis.
• Allyl sulfoxides are valuable intermediates in various chemical transformations.

Purpose of the Study:

• To develop a facile and efficient synthetic route for allyl sulfoxides.
• To explore the scope of the developed method for S-alkynylation and S-arylation.

Main Methods:

• S-allylation of sulfinate esters.
• Investigation of reaction mechanisms involving sulfonium intermediates.

Main Results:

• A straightforward method for allyl sulfoxide preparation was established.
• The synthesis proceeds via sulfonium intermediates, avoiding [3,3]-sigmatropic rearrangement and Pummerer-type reactions.
• Successful S-alkynylation and S-arylation were achieved based on the proposed mechanism.

Conclusions:

• The developed method offers a facile and efficient pathway to allyl sulfoxides.
• The understanding of sulfonium intermediates provides a basis for further synthetic applications.