Electrochemical Cross-Dehydrogenative Coupling of Isochroman and Unactivated Ketones
作者:Huan Cao、Chao-Jiu Long、Dan Yang、Zhi Guan、Yan-Hong He
DOI:10.1021/acs.joc.2c02616
日期:——
An unprecedented electrochemical cross-dehydrogenative coupling reaction between isochroman and unactivated ketones to directly synthesize α-substituted isochromans has been developed. This strategy provides a facile and efficient procedure to the direct activation of C(sp3)–H bond adjacent to the O atom of isochroman. The method features high atom economy, chemical oxidant-free, and mild conditions
开发了异色满和未活化酮之间前所未有的电化学交叉脱氢偶联反应,可直接合成 α-取代的异色满。该策略为直接激活与异色满的 O 原子相邻的C(sp 3 )-H 键提供了一种简便有效的方法。该方法具有原子经济性高、无化学氧化剂、条件温和等特点,其中甲磺酸(MsOH)既作为电解质又作为催化剂,使该过程更加便捷和环保。抗肿瘤活性化合物的克级实验和合成证明了该协议在实际应用中的巨大潜力。
Decarboxylative Alkylation of<i>β</i>-Keto Acids with Isochromans under Oxidative Conditions
作者:Yan Chen、Shi-Kai Tian
DOI:10.1002/cjoc.201200994
日期:2013.1
An unprecedented decarboxylativealkylation reaction of β‐keto acids with isochromans has been developed underoxidativeconditions. A range of β‐keto acids smoothly undergo decarboxylativealkylation with isochromans in the presence of 2,2,6,6‐tetramethylpiperdine‐1‐oxoammonium hexafluorophosphate to give structurally diverse 1‐acylmethylisochromans in moderate to excellent yields with extremely high