1,6-Bis(5,2′ : 5′,2″-terthiophene-2-yl)spiro[4.4]nona-1,6-diene: a molecule having two orthogonally bisected α-terthiophene systems through a spiro carbon
1,6-Bis(5,2′ : 5′,2″-terthiophene-2-yl)spiro[4.4]nona-1,6-diene: a molecule having two orthogonally bisected α-terthiophene systems through a spiro carbon
作者:Juzo Nakayama、Toru Fujimori
DOI:10.1039/c39910001614
日期:——
The title compound 11, a molecule having two orthogonally bisected α-terthiophene systems through a spiro carbon, has been synthesized starting from spiro[4.4]nona-1,6-dione and 5,2â² : 5â²,2â²-terthiophene-2-ylcerium reagent.
Differential carbosubstitution resulted from stepwise triflation and coupling in spiro[4,4]-nonane-1,6-dione. Catalytic hydrogenation of the 1,6-diphenyl-1,6-diene gave the cis,cis-disubstituted spirane. Metal hydride reduction of intermediate monoketone gave mainly the cis-alcohol.