Trifluoroacetic Anhydride Promoted Tandem Conjugate Addition of Boronic Acids/Acetal Ring Opening
作者:Silvia Roscales、Aurelio G. Csákÿ
DOI:10.1021/ol300272j
日期:2012.3.2
A new stereoselective tandem reaction consisting of the metal-free conjugate addition of boronic acids followed by an intramolecular ring opening of a cyclic acetal has been disclosed. Optically pure polysubstituted tetrahydropyrans have been synthesized diastereoselectively by this new reaction. Two new C–C bonds and up to three stereocenters are formed in a single step, allowing the generation of
公开了一种新的立体选择性串联反应,其由无金属的硼酸共轭加成,然后是环缩醛的分子内开环组成。通过该新反应,非对映选择性地合成了光学纯的多取代的四氢吡喃。在一个步骤中形成两个新的C–C键和最多三个立体中心,从而可以生成四元立体中心。