Deoxygenative Transformation of Carbonyl and Carboxyl Compounds Using gem-Diborylalkanes

gem-Diborylalkanes serve as privileged carbanion precursors for the efficient construction of carbon–carbon bond with various carbonyl and carboxyl compounds. We highlight the recent advances on deoxygenative transformation of carbonyl and carboxyl compounds using gem-diborylalkanes reagents. Our recent development of a dual functionalization of gem-diborylalkanes through deoxygenative enolization with the carboxylic acids is also discussed. 1 Introduction 2 Activation Modes of gem-Diborylalkanes 3 Deoxygenative Transformation of Carbonyl and Carboxyl ­Compounds via α-Diboryl Carbanion 3.1 Reaction with Aldehyde and Ketone Electrophiles 3.2 Reaction with Carboxylic Acid Derivatives 4 Deoxygenative Transformation of Carbonyl and Carboxyl ­Compounds via α-Monoboryl Carbanion 5 Conclusion