Terminal Olefins to Linear α,β-Unsaturated Ketones: Pd(II)/Hypervalent Iodine Co-catalyzed Wacker Oxidation–Dehydrogenation
作者:Marinus A. Bigi、M. Christina White
DOI:10.1021/ja402651q
日期:2013.5.29
Development of a mild (35 °C, no Brønsted acids) tandem Wacker oxidation-dehydrogenation of terminal olefins was accomplished using palladium(II) and hypervalentiodine co-catalysis. The reaction affords linear aryl and alkyl α,β-unsaturated ketones directly from readily available terminal olefins in good yields (average 75% per step) with excellent functional group tolerance and chemo- and stereoselectivities
使用钯 (II) 和高价碘助催化,开发了一种温和的(35 °C,无布朗斯台德酸)串联瓦克氧化-末端烯烃脱氢反应。该反应直接从易于获得的末端烯烃中得到直链芳基和烷基 α,β-不饱和酮,收率良好(每步平均 75%),具有优异的官能团耐受性以及化学和立体选择性。人们发现高价碘助催化剂对于脱氢至关重要,但作为化学计量氧化剂并不有效。