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Arylboronic acids are important reagents for the construction of carbon-carbon bonds and carbon-heteroatom bonds. Especially, arylboronic acid esters have the advantages of high stability, low toxicity, and easy operation, and are widely used in the synthesis of drugs and active natural products. .In addition, in biology, material science and medical research, arylboronic acids have been widely used in carbohydrate sensors, enzyme inhibitors and nucleoside and carbohydrate transport carriers. Therefore, the development of efficient and mild aromatic The synthesis method of boronic acid has always been the focus of chemists. The cross‐coupling of arylboronic acids and derivatives with DAST‐type reagents under mild and metal‐free conditions to directly afford sulfinamides in moderate to good yields. Moreover, sulfonamides were obtained after a simple oxidation reaction. The reaction mechanism was investigated by 18O‐labeling experiments, and the synthetic utility was demonstrated by the sulfoxidation of natural products.

Bis(pinacolato)diboron is widely used in the catalytic monoboration and diboration of carbon–carbon multiple bonds. Although known for over 90 years, only in the past two decades has the chemistry of diboron compounds been extensively explored. Many interesting structural features and reaction patterns have emerged, and more importantly, these compounds now feature prominently in both metal-catalyzed and metal-free methodologies for the formation of B–C bonds and other processes.
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