Dehydroxylative Sulfonylation of Alcohols

Area of Science:

• Organic Chemistry
• Synthetic Methodology
• Sulfonylation Reactions

Background:

• Traditional dehydroxylative sulfonylation methods are limited to active alcohols.
• Incorporating fluorinated sulfonyl groups is crucial in pharmaceutical chemistry.
• Developing efficient methods for sulfonylation of inactive alcohols is needed.

Purpose of the Study:

• To develop a novel dehydroxylative sulfonylation protocol.
• To broaden the substrate scope to include inactive alcohols.
• To enable the incorporation of pharmaceutically relevant fluorinated sulfonyl groups.

Main Methods:

• Utilized a R3P/ICH2CH2I catalytic system.
• Employed various sulfinates as sulfonylation reagents.
• Investigated the reaction with both active and inactive alcohols.

Main Results:

• Achieved dehydroxylative sulfonylation of a wide range of alcohols, including alkyl alcohols.
• Successfully incorporated trifluoromethylsulfonyl (CF3SO2) and difluoromethylsulfonyl (HCF2SO2) groups.
• Obtained moderate to high yields within a short reaction time of 15 minutes.

Conclusions:

• The developed protocol offers a versatile and efficient route for dehydroxylative sulfonylation.
• This method provides access to valuable fluorinated sulfonylated compounds.
• The use of inexpensive and accessible reagents makes this protocol practical for broader applications.