A Novel Bifunctional Allyldisilane as a Triple Allylation Reagent in the Stereoselective Synthesis of Trisubstituted Tetrahydrofurans
作者:Andrei V. Malkov、Ondřej Kysilka、Mark Edgar、Aneta Kadlčíková、Martin Kotora、Pavel Kočovský
DOI:10.1002/chem.201100513
日期:2011.6.20
Three for the price of two: A bifunctional allyldisilane undergoes a two‐step triple allylation sequence with pairs of aldehydes to give all‐cis trisubstituted tetrahydrofurans in excellent enantio‐ and diastereoselectivity (see scheme). The first allylation step, which sets up the key stereogenic centres, is catalysed by a chiral Lewis base.
以三为二的价格:双功能烯丙基乙硅烷经过两步三重烯丙基化反应,与成对的醛以优异的对映体和非对映体选择性产生全顺式三取代四氢呋喃(请参见方案)。建立手性立体中心的第一步烯丙基化步骤是由手性路易斯碱催化的。