115237-41-7Relevant articles and documents
Substituted 4H-1-Benzopyran-4-ones (Chromones): Synthesis via Palladium-catalysed Coupling of their Halogeno Derivatives with Alkenes
Davies, Stephen G.,Mobbs, Bryan E.,Goodwin, Christopher J.
, p. 2597 - 2604 (2007/10/02)
Activation of bromochromones has been achieved by Pd0 insertion into the carbon-halogen bond.The resultant species undergo coupling with alkenes leading to vinylated chromones.Vinylation occurs regiospecifically at the original site of bromination and therefore provides a method for the clean introduction of substituents into the chromone ring system.An anomalous reaction of a dibrominated chromone leading to a ring-opened product is described.