Syntheses and Spectral Properties of Norbornadiene-Fused Heterocycles: 1,3-Diphenyl-4,7-dihydro-4,7-methanobenzothiophene, 4,7-methano-2H-isoindole, and -4,7-methanoisobenzofuran

Article abstract of DOI:10.1246/bcsj.66.2707

The syntheses of a novel diphenyl-substituted thiophene, pyrrole, and furan fused at the 3- and 4-positions with norbornadiene are described.Structures of these molecules are discussed on the basis of spectral properties by comparison with those of cycloh