作者:Yao-Yao Liu、Yuan-Lu Qu、Yan-Shang Kang、Yue-Lu Zhu、Wei-Yin Sun、Yi Lu
DOI:10.1021/acs.orglett.2c00620
日期:2022.5.6
Herein, the Rh-catalyzed consecutive C–H bond olefination/annulation/olefination cascade, tandemly directed by sulfonamide and ester groups, has been developed under mild conditions with the assistance of 1-adamantane carboxylic acid. A seven-membered metallacycle including an ester group was preferred to the five-membered one including a sulfonamide group for the third C–H activation. In this transformation
在此,Rh 催化的连续 C-H 键烯化/环化/烯化级联,由磺酰胺和酯基团串联引导,在温和条件下在 1-金刚烷羧酸的帮助下开发。对于第三次 C-H 活化,包含酯基团的七元金属环优于包含磺酰胺基团的五元环。在这种转化过程中,Rh 催化剂通过催化三重 C-H 活化过程而表现出高反应性,并且在 50 °C 时催化剂负载量较低。该方法可用于构建各种药物衍生物。