Thiophene-Fused Ladder Boroles with High Antiaromaticity
作者:Azusa Iida、Shigehiro Yamaguchi
DOI:10.1021/ja2019977
日期:2011.5.11
thiophene-fused boroles were synthesized on the basis of stepwise substitution reactions from thienylboronic ester precursors. In these ladder-type π-conjugated systems, the thiophene-fused structure enhances the antiaromaticity of the borolering. This trend is opposite to the conventional understanding that the arene-fused structure decreases the antiaromaticity of the 4π-electron ring skeletons. The