1202532-06-6Relevant articles and documents
Cu(II)-Catalyzed 6π-Photocyclization of Non-6πSubstrates
Zhang, Yanbin,Jin, Ruiwen,Kang, Wenjie,Guo, Hao
supporting information, p. 5502 - 5505 (2020/07/08)
This research successfully achieved a Cu(II)-catalyzed 6π-photocyclization of non-6πsubstrates. The photoenolization converts ortho-alkylphenyl alkynl ketones into a triene-type intermediate which undergoes the subsequent 6π-photocyclization to give napht
Privilege Ynone Synthesis via Palladium-Catalyzed Alkynylation of "Super-Active Esters"
Yu, Bo,Sun, Huaming,Xie, Zunyuan,Zhang, Guofang,Xu, Li-Wen,Zhang, Weiqiang,Gao, Ziwei
, p. 3298 - 3301 (2015/07/15)
A neat palladium-catalyzed alkynylation reaction was developed with "super-active ester" as the carbonyl electrophile, which provides a clean and efficient synthetic protocol for a broad array of ynone compounds under CO-, Cu-, ligand-, and base-free conditions. The superior activity of triazine ester was rationalized by the strong electron-withdrawing ability and the unique affinity of triazine on palladium. A mechanistic experiment clearly demonstrated that the N-Pd coordination of triazine plays a crucial role for the highly efficient C-O activation. (Chemical Equation presented).
Highly-efficient and recyclable nanosized MCM-41 anchored palladium bipyridyl complex-catalyzed coupling of acyl chlorides and terminal alkynes for the formation of ynones
Chen, Jun-You,Lin, Tze-Chiao,Chen, Szu-Chien,Chen, Ai-Jan,Mou, Chung-Yuan,Tsai, Fu-Yu
experimental part, p. 10134 - 10141 (2010/02/28)
A highly-efficient and practical method for the formation of ynones from a variety of acyl chlorides and terminal alkynes catalyzed by a nanosized MCM-41 anchored palladium bipyridyl complex is described herein. Aroyl, heteroaroyl, and alkyl acyl chlorides were easily coupled with terminal alkynes, giving good to high isolated yields in the presence of a very low catalyst loading (0.002-0.1 mol % Pd) in Et3N or diisopropylethylamine at 50 °C. Furthermore, the reaction scale was up to 150 mmol for a single batch reaction, providing the potential for practically synthetic application. After centrifugation, the supported catalyst was able to be recycled and reused several times with only a slight decrease in activity.