Facile Construction of the Benzofuran and Chromene Ring Systems via Pd<sup>II</sup>-Catalyzed Oxidative Cyclization
作者:So Won Youn、Jeong Im Eom
DOI:10.1021/ol051264z
日期:2005.7.1
text]. We herein report the development of one-pot procedures for the conversion of allyl aryl ethers to 2-methylbenzofurans (via sequential Claisen rearrangement and oxidative cyclization) and for the conversion of aryl homoallyl ethers to chromenes (via direct oxidative cyclization). It is likely that both reactions proceed via a common Pd-catalyzed pathway involving olefin activation, nucleophilic
[反应:请参见文字]。我们在本文中报道了一锅法的发展,该方法用于将烯丙基芳基醚转化为2-甲基苯并呋喃(通过顺序的克莱森重排和氧化环化)和用于将芳基高烯丙基醚转化为苯甲基(通过直接氧化环化)。这两种反应都有可能通过常见的Pd催化途径进行,涉及烯烃活化,亲核攻击和β-氢化物消除。