79480-09-4Relevant articles and documents
Synthesis of 5H-Benzopyranoquinoline-6,12-diones by Photooxidative Cyclisation of Some N-Phenyl-4(H)-oxo-1-benzopyran-2-carboxamides
Kumar, K. Akshaya,Srimannarayana, G.
, p. 604 - 606 (2007/10/02)
N-Phenyl-4(H)-oxo-1-benzopyran-2-carboxamides (Ia-d) on photooxidation in the presence of iodine in benzene by a long wavelength mercury are lamp furnish 5H--benzopyranoquinoline-6,12-diones (IIa-c), the aza structural analogues of the rotenoids.