Recent Advances in Catalytic Asymmetric Synthesis of Chiral 1,2-Bis(boronic)Esters
Chiral 1,2-bis(boronic)esters are essential building blocks in the field of synthetic chemistry,and their catalytic asymmetric synthesis has attracted significant interest of chemists.Recently,asymmetric diboration of olefins,using transition metals and chiral diols,has emerged as the straightforward and atom-economical methods for producing highly valuable chiral 1,2-bis(boronic)esters.Asymmetric hydrogenation of vinyl bis(boronic)esters can be a complementary approach to asymmetric diboration for synthesizing these products.Additionally,borofunctionalization of alkenes or alkynes represents another effective strategy for constructing these highly valuable scaffolds.A recent innovation involves catalytic asymmetric migratory coupling reactions with gem-diborylalkanes,offering new avenues for synthesizing chiral 1,2-bis(boronic)esters.The latest developements and challenges in synthesizing these moleculeshis are summarized,and the potential future research directions in this field are prospected.
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