Synthesis and conformational properties of 5,7-disubstituted [3.3] Metacyclo (2,5) thiophenophane-1,12-diones
作者:Yuji Miyahara、Takahiko Inazu、Tamotsu Yoshino
DOI:10.1016/s0040-4039(00)99899-x
日期:1984.1
The title compounds showed unique conformational equilibria which were dependent upon the substituents in the 5,7-positions, the predominant conformers being in a O,S,O-, conformation with a highly deformed thiophene-2,5-dicarbonyl moiety.