Unusual Ring Opening of Bicyclic Terpenes During Pd‐Catalyzed Coupling with Aromatic Halides
作者:Evgeniya S. Shutovskaya、Yulia P. Ustimenko、Alexey V. Tkachev、Julia V. Burykina、Alexander M. Agafontsev、Anastasiya V. Lastovka、Dmitriy N. Polovyanenko、Taisiya S. Sukhikh
DOI:10.1002/adsc.202300594
日期:2023.12.5
describe Pd-catalyzed cross-coupling reaction of α-pinene derivative – pinacarvone O-methyl oxime (1) with aryl halides (2). Surprisingly, the formation of the C−C coupling product was accompanied by an unexpected opening of the pinene bicyclic structure. The (Z)-2-aryl-4,4,5-trimethylcyclohexa-2,5-dien-1-one O-methyl oxime (3) was formed as the resulting product. The reaction conditions of the developed synthetic
在此,我们描述了α-蒎烯衍生物 – 蒎香酮O-甲基肟 ( 1 ) 与芳基卤化物 ( 2 )的 Pd 催化交叉偶联反应。令人惊讶的是,CC偶联产物的形成伴随着蒎烯双环结构的意外打开。( Z )-2-芳基-4,4,5-三甲基环六-2,5-二烯-1-酮O-甲基肟( 3 )作为所得产物形成。所开发的合成程序的反应条件经过仔细优化,并根据结构和计算方法获得的数据推测了反应机理。