Cyclic alkenyl boronic half acid synthesis and applications

Area of Science:

• Organic Chemistry
• Organometallic Chemistry

Background:

• Boronic acids and their derivatives are crucial building blocks in organic synthesis.
• Ring-closing metathesis (RCM) is a powerful tool for constructing cyclic molecules.
• Suzuki-Miyaura coupling is a widely used carbon-carbon bond-forming reaction.

Purpose of the Study:

• To report a novel synthesis of cyclic alkenyl boronic acids.
• To explore the utility of these compounds in cross-coupling reactions.

Main Methods:

• Synthesis of cyclic alkenyl boronic half acids via ring-closing metathesis.
• Utilizing vinyl and propenyl boronic esters with homoallylic alcohols.
• Employing both conventional and microwave heating conditions.

Main Results:

• Successful synthesis of cyclic alkenyl boronic acids.
• Comparable yields achieved under conventional and microwave heating.
• Demonstrated good yields in subsequent Suzuki-Miyaura coupling reactions.

Conclusions:

• The developed RCM method provides efficient access to cyclic alkenyl boronic acids.
• These compounds are versatile substrates for Suzuki-Miyaura coupling, enabling further synthetic applications.