A Persistent Diazaheptacene Derivative
Journal of the American Chemical Society2014Vol. 136(43), pp. 15166–15169
Citations Over TimeTop 10% of 2014 papers
Abstract
We describe the synthesis of characterizable diazaheptacene derivatives. Diazaheptacenes need four silylethynyl protecting groups to be isolable. TIPS-ethynyl groups are not bulky enough to allow stabilization. Four Si(sec-Bu)3-ethynyl groups symmetrically attached to the acene core sufficiently protect the formed diazaheptacene from dimerization through Diels-Alder reaction. It was characterized by NMR and UV-vis spectroscopies and cyclic voltammetry.
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