Enantioselective Iridium-Catalyzed α-Allylation with Aqueous Solutions of Acetaldehyde
作者:Tobias Sandmeier、Erick M. Carreira
DOI:10.1021/acs.orglett.9b04658
日期:2020.2.7
The enantioselective α-allylation of aqueous solutions of acetaldehyde using iridium- and amine-catalyzed substitution of racemic allylic alcohols is described. The method utilizes a readily available, safely handled aqueous solution of acetaldehyde and furnishes γ,δ-unsaturated aldehydes in good yields and greater than 99% enantiomeric excess. The synthetic potential of the method is demonstrated
描述了使用铱和胺催化的外消旋烯丙基醇取代的乙醛水溶液的对映选择性α-烯丙基化。该方法利用容易获得的,安全处理的乙醛水溶液,并以良好的收率和大于99%的对映体过量提供γ,δ-不饱和醛。烯丙醇C和E以及螺旋螺酮A和C的对映选择性形式合成证明了该方法的潜力。