444809-89-6Relevant academic research and scientific papers
Regioselective Bromine/Magnesium Exchange for the Selective Functionalization of Polyhalogenated Arenes and Heterocycles
Desaintjean, Alexandre,Haupt, Tobias,Bole, Leonie J.,Judge, Neil R.,Hevia, Eva,Knochel, Paul
supporting information, p. 1513 - 1518 (2020/11/30)
Using the bimetallic combination sBu2Mg?2 LiOR (R=2-ethylhexyl) in toluene enables efficient and regioselective Br/Mg exchanges with various dibromo-arenes and -heteroarenes under mild reaction conditions and provides bromo-substituted magnesiu
Visible-Light-Induced External Radical-Triggered Annulation to Access CF2-Containing Benzoxepine Derivatives
Xiang, Haoyue,Zhao, Qing-Lan,Xia, Peng-Ju,Xiao, Jun-An,Ye, Zhi-Peng,Xie, Xiong,Sheng, Huan,Chen, Xiao-Qing,Yang, Hua
supporting information, p. 1363 - 1366 (2018/03/09)
A facile and diversified synthesis of functionalized CF2-containing benzoxepine derivatives via photoredox catalysis was achieved in this work. This novel protocol features broad substrate scope, mild reaction conditions, operational simplicity, easy scale-up, and versatile derivatization, which would facilitate its practical and broad applications in the construction of valuable and synthetically challenging heterocycles.
Expedient synthesis of xanthones and multi-functionalized chromones from 1,1-diacyl cyclopropanes
French, Sarah A.,Clark, Mitchell R.,Smith, Robert J.,Brind, Thomasin,Hawkins, Bill C.
supporting information, p. 5340 - 5350 (2018/04/19)
We report the rapid synthesis of various cycloheptane-fused chromones and an oxepine fused flavone in 5 steps from the corresponding 2-hydroxy acetophenone. Furthermore, we describe the synthesis of xanthones, in moderate to good yield, from 2,3-disubstit
Synthesis of Chromones from 1,1-Diacylcyclopropanes: Toward the Synthesis of Bromophycoic Acid e
Smith, Robert J.,Nhu, Duong,Clark, Mitchell R.,Gai, Sinan,Lucas, Nigel T.,Hawkins, Bill C.
, p. 5317 - 5327 (2017/05/24)
A tandem deprotection-cyclization reaction of 1,1-diacylcyclopropanes is described which allows rapid access to structurally diverse 2,3-disubstituted chromones in good yields, and with straightforward purification. The utility of this reaction is showcas
Synthesis of Allyl- and Prenylcoumarins via Microwave-Promoted Tandem Claisen Rearrangement/Wittig Olefination
Schmidt, Bernd,Riemer, Martin
supporting information, p. 141 - 149 (2015/12/26)
Allyl, dimethylallyl, crotyl, and prenyl ethers of various aromatic ortho-hydroxy carbonyl compounds undergo a tandem sequence of Claisen rearrangement, carbonyl olefination, and cyclization upon microwave irradiation in the presence of a stabilized ylide. The products are multiply substituted 6- or 8-allylated or prenylated coumarins (2H-chromen-2-ones).
Synthesis of novel 8-[2-hydroxy-3-(alkylamino)propyl]-4-methoxy coumarins
Dalal, Shailendara,Rao, Y. Jayaprakash,Krupadanam, G. L. David
, p. 805 - 810 (2015/06/30)
A series of new 8-[-2-hydroxy-3(alkylamino) propyl]-4-methoxy coumarins 7a-e, 8a-e have been synthesized from 3-allyl-2-hydroxy acetophenones 3a-e via key intermediate 8-(2-oxerane methyl)-4-methoxy coumarins 6a-e by regioselective opening of epoxide with
Synthesis and glycogen phosphorylase inhibitor activity of 2,3-dihydrobenzo[1,4]dioxin derivatives
Juhasz, Laszlo,Docsa, Tibor,Brunyaszki, Attila,Gergely, Pal,Antus, Sandor
, p. 4048 - 4056 (2008/03/12)
Novel 5-benzyl and 5-benzylidene-thiazolidine-2,4-diones carrying 2,3-dihydrobenzo[1,4]dioxin pharmacophore were synthesized and their glycogen phosphorylase inhibitor activity was also studied.
Regiocontrolled synthesis of the macrocyclic polyamine alkaloid (±)-lunarine, a time-dependent inhibitor of trypanothione reductase
Hamilton, Chris J.,Fairlamb, Alan H.,Eggleston, Ian M.
, p. 1115 - 1123 (2007/10/03)
A regiocontrolled synthesis of the macrocyclic polyamine alkaloid (±)-lunarine is described. The key steps involve the preparation of the differentially functionalised cis-3-oxo-8-bromo-9b-cyano-1,2,3,4,4a,9b-hexahydrobenzofuranyl tricyclic scaffold 14 wh
