Hydroformylation of Alkynyl Sulfides: A Stereo‐ and Regioselective Route to α‐Sulfenyl Acroleins
作者:Patrick Wagner、Mihaela Gulea、Nicolas Girard
DOI:10.1002/adsc.202301349
日期:2024.3.19
sulfides. Additionally, one can take advantage of the possibility of the sulfur oxidation to obtain an alkenyl sulfoxide or sulfone, and so altering the electronic behavior of the carbon-carbon double bond. So far, the synthesis of α-sulfanyl acroleins (Scheme 1) is mainly based on general methods involving the incorporation of the sulfur function into an α,β-unsaturated aldehyde as a nucleophile (Scheme 1
描述了在温和条件下铑催化的炔基硫醚的加氢甲酰化反应。该方法可以获得具有良好区域选择性(α/β 比例高达 89/11)的 α-硫基丙烯醛,并且适用于各种取代的底物。它甚至对更复杂的底物(例如半胱氨酸和胆固醇衍生物)也有效。为了证明所得产物的合成潜力,选择(Z)-3-环己基-2-甲基硫基丙烯醛为例,将其硫原子选择性氧化成相应的亚砜或砜。在氧化过程中,酸促进双键从 (Z) 异构化为 (E)。然后将获得的三种硫基、亚磺酰基和磺酰基官能化丙烯醛用作亲二烯体以制备环己烯甲醛。