6622-22-6Relevant academic research and scientific papers
Vinylcyclopropanes as All-Carbon 1,5-Dipoles: A Reactivity Switch for Palladium-Catalyzed (5 + 4) Cycloadditions
Scuiller, Ana?s,Karnat, Alexandre,Casaretto, Nicolas,Archambeau, Alexis
supporting information, p. 2332 - 2336 (2021/04/05)
Azonanes were prepared by a palladium-catalyzed (5 + 4) cycloaddition between activated vinylcyclopropanes and 1-azadienes. During this process, the vinylcyclopropane partner displayed an unusual reactivity and behaved as an all-carbon 1,5-dipole. A N,N-bidentate ligand was required to inhibit the formation of thermodynamic (3 + 2) cycloadducts.
A Palladium-Catalyzed Oxa-(4+4)-Cycloaddition Strategy towards Oxazocine Scaffolds
Scuiller, Ana?s,Liu, Xueyang,Cordier, Marie,Garrec, Julian,Archambeau, Alexis
supporting information, p. 981 - 986 (2021/06/02)
A Pd-catalyzed oxa-(4+4)-cycloaddition between 1-azadienes and (2-hydroxymethyl)allyl carbonates is described. Aurone-derived azadienes furnished polycyclic 1,5-oxazocines in good yields. Interestingly, linear azadienes have also been involved and yielded monocyclic heterocycles with complete regioselectivity. DFT calculations were carried out to gain insight on this observation.
Diversity-oriented synthesis of benzofuro[3,2-b]pyridine derivatives from aurone-derived α,β-unsaturated imines and activated terminal alkynes
Cheng, Bin,He, Yixuan,Li, Hui,Sun, Haiyan,Wang, Taimin,Zhai, Hongbin,Zhang, Xinping,Zhu, Xuecheng
supporting information, p. 7701 - 7704 (2021/08/09)
An efficient annulation reaction of aurone-derived α,β-unsaturated imines and activated terminal alkynes mediated by triethylamine is described, which enables the facile synthesis of 1,4-dihydrobenzofuro[3,2-b]pyridines in high yields. When the nucleophil
Divergent synthesis of flavones and aurones via base-controlled regioselective palladium catalyzed carbonylative cyclization
Xu, Shan,Sun, Huaming,Zhuang, Mengyuan,Zheng, Shaohua,Jian, Yajun,Zhang, Weiqiang,Gao, Ziwei
, p. 264 - 270 (2018/05/04)
A regioselective approach for construction of 5-membered and 6-membered flavonoid is established by Pd catalyzed carbonylative cyclization of 2-iodophenol with terminal alkynes using different amine bases under mild reaction condition. The catalytic experiments found that piperazine preferentially accelerate 6-endo cyclization, and triethylamine mediated Pd catalyzed 5-exo cyclization. Under optimized reaction condition, Pd catalyzed carbonylative protocol successfully applied for the diverse structures of 39 examples in good to excellent yield and regioselectivity.
Design, synthesis and MAO inhibitory activity of 2-(arylmethylidene)-2,3-dihydro-1-benzofuran-3-one derivatives
Badavath, Vishnu Nayak,Nath, Chandrani,Ganta, Narayana Murthy,Ucar, Gulberk,Sinha, Barij Nayan,Jayaprakash, Venkatesan
supporting information, p. 1528 - 1532 (2017/07/17)
A series of 2-(arylmethylidene)-2,3-dihydro-1-benzofuran-3-one derivatives (aurones, 1–20) were synthesized and screened for their inhibitory activity against hMAO. Seventeen compounds (1–5, 7–17, 19) were found to be selective towards hMAO-B, while two w
2-Chlorophenyl-substituted benzofuro[3,2-b]pyridines with enhanced topoisomerase inhibitory activity: The role of the chlorine substituent
Thapa Magar, Til Bahadur,Kadayat, Tara Man,Lee, Hwa-Jong,Park, Seojeong,Bist, Ganesh,Shrestha, Aarajana,Kwon, Youngjoo,Lee, Eung-Seok
, p. 3279 - 3283 (2017/07/07)
A new series of 2-chloropheny-substituted benzofuro[3,2-b]pyridines were designed, synthesized, and evaluated for topoisomerase I and II inhibition and antiproliferative activity. Compounds 17–19, 23, 24, 26, and 27 exhibited excellent topo II inhibitory
2,4-Diaryl benzofuro[3,2-b]pyridine derivatives: Design, synthesis, and evaluation of topoisomerase inhibitory activity and cytotoxicity
Thapa, Pritam,Jahng, Yurngdong,Park, Pil-Hoon,Jee, Jun-Goo,Kwon, Youngjoo,Lee, Eung-Seok
, p. 3073 - 3082 (2014/01/06)
Designed and synthesized twenty-four 2,4-diaryl benzofuro[3,2-b]pyridine derivatives were evaluated for topoisomerase I and II inhibitory activities as well as cytotoxicities against several human cancer cell lines. Various aryl groups such as phenyl, 2-
