在此,我们描述了一种通过末端炔烃与 TMSCF 3和 NaI的碘甲酰化合成 ( E )-β-碘-α,β-不饱和醛的方法。这种合成方法使用廉价且易于处理的化学原料,并采用市售的 CuI 催化剂。它可以将多种末端炔烃转化为具有优异化学选择性、区域选择性和立体选择性的双亲电子( E )-β-碘-α,β-不饱和醛。此外,证明该协议具有丰富的有机反应性。
A new methodology for preparing alpha-arylated alpha,beta-unsaturated aldehydes is reported. The starting materials are all commercially available alkyn-1-ols (la-c) that have been easily isomerised to the corresponding allenes (2a-c). The key step is the Heck coupling of the 1,2-dien-1-ols with a series of iodo- and bromoarene. The products have been synthesised in good yields, and the reactions were carried out under very mild conditions. (C) 2008 Elsevier Ltd. All rights reserved.