92350-03-3Relevant articles and documents
Mass Spectral Studies of Naphthoflavones
Guidugli, F. H.,Kavka, J.,Garibay, M. E.,Santillan, R. L.,Joseph-Nathan, P.
, p. 479 - 485 (1987)
The electron impact induced fragmentation of the five possible naphthoflavones have been studied with the aid of low- and high-resolution measurements, metastable decompositions and isotope labelling using either deuterium or carbon-13 atoms.All compounds
From simple to complex: Rhodium(III)-catalyzed C-C bond cleavage and C-H bond functionalization for the synthesis of 3a, 8b- dihydro-1H-cyclopenta[b]benzofuran-1-ones
Guo, Guiyu,Wan, Saihong,Si, Xiaodong,Jiang, Qijian,Jia, Yuanyuan,Yang, Luo,Zhou, Wang
supporting information, p. 5026 - 5029 (2017/11/06)
A rhodium(III)-catalyzed strategy for the onestep synthesis of polysubstituted cis-3a, 8b-dihydro-1Hcyclopenta[ b]benzofuran-1-ones from simple 2′-hydroxychalcones and alkynes is developed. This novel transformation involves a sequential C-C bond cleavage and dehydrogenative annulation, leading to the product bearing a quaternary and a tertiary carbon center. 13C labeling experiments revealed that C-C bond cleavage takes place not only at the C-C(C-O) bond but also at the C-C bond. This study provides an alternative strategy using C-C bond cleavage thus demonstrating the power of this strategy combined with C-H bond functionalization for assembling complex structures from simple starting materials.