ChemInform Abstract: Synthesis of 3‐Hydroxy‐1‐alkenylboronates via Phosphine Stabilized Borylzirconacyclopropenes.

Abstract

Organo-boron compounds S 0040Synthesis of 3-Hydroxy-1-alkenylboronates via Phosphine Stabilized Borylzirconacyclopropenes. -Zirconacyclopropenylboronates are stabilized to dimerization by complexation with tributylphosphine. The obtained zirconacycle boronates react with aliphatic and aromatic ketones and aldehydes (II) at C2 of the triple bond to give the hitherto unknown hydroxy-alkenylboronates (III) in good yields. -(AL QUNTAR, A. A. A.; BOTVINIK, A.; RUBINSTEIN, A.; SREBNIK, M.; Chem. Commun. (Cambridge) 2008, 43, 5589-5591; Dep. Med. Chem., Sch. Pharm., Hebrew Univ., Jerusalem 91120, Israel; Eng.) -M. Paetzel