1014711-45-5Relevant articles and documents
Unprecedented intramolecular nucleophilic aromatic additions of allyloxy anions to diphenylphosphinoyl-substituted benzene rings: A facile method for preparing multisubstituted benzopyrans
Gorobets, Evugeni,Parvez, Masood,Keay, Brian A.
, p. 129 - 133 (2008)
A new synthetic method for the preparation of multisubstituted benzopyrans that involves an intramolecular conjugate addition of allyloxy anions to diphenylphosphinoyl-substituted benzene rings is described. The intermediate anion is trapped with electrophiles providing benzopyrans that are readily oxidized with O2 to intermediates containing a peroxide that is easily converted into benzopyran-2-ones (i.e. coumarins). Georg Thieme Verlag Stuttgart.