Enhanced Nucleophilic Reactivity of a 4-Lithiophenoxide Ion and Its Application to the Synthesis of a Bis(4-hydroxyphenyl)methylenecyclopentadiene and Its Dianion, a Novel Extended Trimethylenemethane Dianion
2,6-Di-<I>tert</I>-butyl-4-lithiophenoxide ion has enhanced nucleophilic reactivity probably due to intramolecular electronic repulsion and its reaction with 6,6-bis(dimethylamino)fulvene affords a novel extended trimethylenemethane dianion with a fulvene moiety whose NMR spectra indicate substantially strong tetrapolar properties.
- Chemistry letters
Chemistry letters 1997(9), 947-948, 1997-09
The Chemical Society of Japan