作者:Nicholas J. Green、Anthony C. Willis、Michael S. Sherburn
DOI:10.1002/anie.201604527
日期:2016.8
cross‐coupling sequence between underivatized propargylic diols and either aryl or alkenyl boronic acids to furnish highly substituted 1,3‐dienes. Thus, 2,3‐diaryl‐1,3‐butadienes and their dialkenic congeners ([4]dendralenes) are delivered in a (pseudo)halogen‐free, single‐step synthesis which supersedes existing methods. Allenols are also readily formed. Treatment of these single‐ and twofold cross‐coupled products
[Pd(PPh 3)4 ]催化未衍生的炔丙二醇与芳基或烯基硼酸之间的Suzuki-Miyaura类双重交叉偶联序列,以提供高度取代的1,3-二烯。因此,2,3-二芳基-1,3-丁二烯及其二烯键同系物([4]树枝状烯)以无(伪)卤素的单步合成法取代了现有方法。烯醇也容易形成。用酸处理这些单双交叉交联产物,分别导致高度取代的苯并富烯基戊烯基和芳基茚基的明显短合成。