%0 Journal Article %A Roscales García, Silvia %A Maroto Ortega, Víctor Manuel %A García Csaky, Aurelio %T Transition-Metal-Free Reactions of Boronic Acids: 1,3-Stereochemical Induction in the Substrate-Controlled Conjugate Addition %D 2013 %U https://hdl.handle.net/20.500.14352/116154 %X The substrate-controlled 1,3-stereoselective conjugate addition of boronic acids and potassium trifluoroborates under metal-free conditions has been developed. This reaction affords bicyclic acetals, which have been used as key intermediates in the stereodivergent synthesis of polysubstituted tetrahydropyrans. %~