Insight into the Electronic State of 1-Phenylthienoborepin by Means of Nuclear Magnetic Resonance Spectroscopy

Article abstract of DOI:10.1246/cl.1993.933

In order to obtain an insight into the electronic states in connection with the condensation modes of thiophene and borepin rings, we examined 1-phenylthieno<2,3-d>borepin (2).While 1-phenylthieno<3,4-d>borepin is a peripherally conjugated compound, 2 was shown to be an aromatic compound which maintains characteristics in conjugation of individual rings.