Metal- and Reagent-Free Anodic C−C Cross-Coupling of Phenols with Benzofurans leading to a Furan Metathesis
作者:Sebastian Lips、Bernardo Antonio Frontana-Uribe、Maurice Dörr、Dieter Schollmeyer、Robert Franke、Siegfried R. Waldvogel
DOI:10.1002/chem.201800919
日期:2018.4.20
Heterobiaryls consisting of a phenol and a benzofuran motif are of significant importance for pharmaceutical applications. An attractive sustainable, metal‐ and reagent‐free, electrosynthetic, and highly efficient method, that allows access to (2‐hydroxyphenyl)benzofurans is presented. Upon the electrochemical dehydrogenative C−C cross‐coupling reaction, a metathesis of the benzo moiety at the benzofuran
由苯酚和苯并呋喃基序组成的杂二芳基在药物应用中具有重要意义。提出了一种有吸引力的,可持续的,无金属和无试剂,电合成且高效的方法,该方法可使用(2-羟苯基)苯并呋喃。在电化学脱氢CC交叉偶联反应中,苯并呋喃中的苯并部分发生了复分解反应。这在羟苯基部分上产生了取代模式,该取代模式不能通过直接偶联方法相容。单步协议易于在不分隔的电解槽中进行,因此具有可扩展性,并且本质上是安全的。