547741-49-1

Upstream product

• 213273-03-1 4-oxo-2-(N-phenyl)amino-4H-chromene-3-carbaldehyde 
• 1099-45-2 ethyl (triphenylphosphoranylidene)acetate 
• 547741-46-8 2-{[(2E)-but-2-enyl]phenylamino}-4-oxo-4H-1-benzopyran-3-carboxaldehyde 

Relevant academic research and scientific papers

Pericyclic transformations at the periphery of chromen-4-one (=4H-1-benzopyran-4-one): An unusual preference for a 1,5-shift of allylic moieties over the ene reaction

Quite unlike the reported facile ene reactions on the periphery of many related heterocyclic systems, similarly disposed moieties on the periphery of the chromen-4-one (=4H-1-benzopyran-4-one) system fail to undergo an ene reaction and display a rather un