1253197-94-2Relevant academic research and scientific papers
An efficient oxidative conversion of 2-aryl-2H-chromenes to the corresponding flavones by tert-butylhydroperoxide and copper bromide
Banerjee, Dipanwita,Kayal, Utpal,Maiti, Gourhari
supporting information, p. 1667 - 1671 (2016/04/04)
A simple and efficient method has been developed for the facile oxidation of chromenes to the corresponding flavones by tert-butylhydroperoxide (TBHP) in the presence of copper(II) bromide catalyst in toluene at 80 °C in a very short time. The reaction demonstrates excellent reactivity, functional group tolerance, and good to excellent yields without using conventional strong oxidizing agents.
A highly adaptable catalyst/substrate system for the synthesis of substituted chromenes
Aponick, Aaron,Biannic, Berenger,Jong, Michael R.
supporting information; experimental part, p. 6849 - 6851 (2010/10/21)
The gold(i)-catalyzed endo-cyclization of o-(1-hydroxyallyl)phenols to form chromenes is reported. The title compounds are prepared in high yield from readily available substrates. The system tolerates both electron rich and deficient aryl rings and a high degree of substitution on the allyl moiety.
