1373355-49-7Relevant articles and documents
One-pot synthesis of 3-methylflavones and their transformation into (E)-3-styrylflavones via Wittig reactions
Rocha, Djenisa H. A.,Pinto, Diana C. G. A.,Silva, Artur M. S.
, p. 2683 - 2686 (2014/01/06)
An efficient one-pot synthesis of 3-methylflavone derivatives is established. Furthermore, their transformation into phosphorus ylides, which are then used in the diastereoselective synthesis of (E)-styrylflavones through Wittig reactions, is also studied
A new synthesis of 5-arylbenzo[c]xanthones from photoinduced electrocyclisation and oxidation of (E)-3-styrylflavones
Rocha, Djenisa H. A.,Pinto, Diana C. G. A.,Silva, Artur M. S.,Patonay, Tamás,Cavaleiro, José A. S.
experimental part, p. 559 - 564 (2012/04/04)
A new synthetic route to 5-arylbenzo[c]xanthones is -established. This was accomplished by use the Heck reaction of 3-bromoflavones with styrene derivatives, leading to (E)-3-styrylflavones with total diastereoselectivity. This transformation was greatly improved under microwave irradiation. The one-pot, photoinduced electrocyclisation of (E)-3-styrylflavones and further in situ oxidation of the cycloadduct leads to 5-arylbenzo[c]xan-thones. Georg Thieme Verlag Stuttgart · New York.