Palladium-Catalyzed Carbonylative Cycloisomerization of γ-Propynyl-1,3-diketones: A Concise Route to Polysubstituted Furans
作者:Yu Li、Zhengkun Yu
DOI:10.1021/jo9020634
日期:2009.11.20
trisubstituted furan derivatives have been efficiently synthesized via palladium(II)-catalyzed intramolecular carbonylative cycloisomerization of γ-propynyl-1,3-diketones with aryl iodides and carbonmonoxide. The mechanism suggests that in situ generated acylpalladium species from the carbonylation of aryl iodide initiates the reaction followed by cyclization of the enolized isomer of a 1,3-diketone substrate
Herein we report the first versatile and expeditious method for the site-selective C–H fluoromethylation of aryl iodides viaPd/norbornenecooperativecatalysis, which could work as a robust toolbox for the diversity-oriented synthesis (DOS) of fluoromethylated arenes. This methodology features the use of the low-cost industrial raw material CH2IF as the fluoromethyl source, an excellent functional
Modular Approach for Diversity‐Oriented Synthesis of β‐Fluoroalkylated Arenes via Pd/Norbornene Cooperative Catalysis
作者:Shuxin Chen、Xue Liu、Kaidian Li、Wenchao Yang、Jian Lin、Ri‐Yuan Tang、Hanhong Xu、Zhaodong Li
DOI:10.1002/asia.202200858
日期:2022.12
A novel approach towards the efficient assembly of β-fluoroalkylated arenes is presented here based on Pd/norbornenecooperativecatalysis, which features an excellent functional group tolerance, as well as a broad ipso termination scope. The mild reaction conditions enabled the diversity-oriented synthesis (DOS) of the 13 and 14-membered fluorinated macrolactones which is extremely challenging otherwise