IODINE CATALYZED CASCADE SYNTHESIS OF FLAVONE DERIVATIVES FROM 2'-ALLYLOXY-α, β-DIBROMOCHALCONES
作者:BEENA R NAWGHARE、SUNIL V GAIKWAD、ABDUL RAHEEM、PRADEEP D LOKHANDE
DOI:10.4067/s0717-97072014000100009
日期:——
Synthesis of flavones from 2'-allyloxy-α, β-dibromochalcones has been described. The iodine induced oxidative cyclization of 2'-allyloxy-α, β-dibromochalcones results into the formation of 3-bromoflavanones which ultimately gives flavones. Dehydrobromination of 3-bromoflavanone to give flavone is the preferred reaction over dehydrogenation. 6 3-Bromoflavones are used in drugs and for synthesis of alkylated
Shivhare, Abha; Kale, Arun V.; Berge, Diwakar, D., Acta Chimica Hungarica, 1985, vol. 120, # 2, p. 107 - 110
作者:Shivhare, Abha、Kale, Arun V.、Berge, Diwakar, D.
DOI:——
日期:——
Studies on Ruthenium(III) Chalconate Complexes Containing PPh<sub>3</sub>/AsPh<sub>3</sub>
作者:M. Muthukumar、P. Viswanathamurthi、R. Karvembu
DOI:10.1080/10426500903486706
日期:2010.10.28
The reactions of [RuX3(EPh3)3] (X = Cl or Br; E = P or As) with 2'-hydroxychalcones in benzene under reflux led to the formation of [RuX2(EPh3)2(L)] (X = Cl or Br; E = P or As; L = chalconates). The new complexes have been characterized by analytical and spectroscopic (IR, electronic, and EPR) data. The redox behavior of the complexes has also been studied. Based on the data, an octahedral structure has been assigned for all the complexes. The new complexes exhibit efficient catalytic activity for the oxidation of primary and secondary alcohols into their corresponding aldehydes and ketones in the presence of N-methylmorpholine-N-oxide (NMO) as co-oxidant and also found efficient catalytic activity for the transfer hydrogenation of ketones. The antifungal properties of the complexes have also been examined and compared with standard Bavistin. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file.
Verma,B.L.; Bokadia,M.M., Journal of the Indian Chemical Society, 1965, vol. 42, # 6, p. 399 - 402
作者:Verma,B.L.、Bokadia,M.M.
DOI:——
日期:——
A novel one-pot synthesis of flavones
作者:Meng-Yang Chang、Min-Chen Tsai、Chun-Yi Lin
DOI:10.1039/d1ra00534k
日期:——
In this paper, a one-pot facile route for the BiCl3/RuCl3-mediated synthesis of functionalized flavones is described, including: (i) intermolecular ortho-acylation of substituted phenols with cinnamoyl chlorides, and (ii) intramolecular cyclodehydrogenation of the resulting o-hydroxychalcones. The reaction conditions are discussed herein.