Bis[(pinacolato)boryl]methane is an aryl boronate ester.Bis-boronate has been reported by Morken and coworkers to be a key building block in the synthesis of enantioenriched secondary boronate esters, which undergo facile Suzuki-Miyaura coupling with minimal erosion of enantiopurity. Bis[(pinacolato)boryl]methane may be used in the preparation of trans-vinyl boronate esters, via the Boron-Wittig reaction. Bis[(pinacolato)boryl]methane is an aryl boronate ester. Bis-boronate has been reported by Morken and coworkers to be a key building block in the synthesis of enantioenriched secondary boronate esters, which undergo facile Suzuki-Miyaura coupling with minimal erosion of enantiopurity. Bis[(pinacolato)boryl]methane may be used in the preparation of trans-vinyl boronate esters, via the Boron-Wittig reaction.