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Updated: Oct 12, 2025

Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
Synthesis of Triptycenemonohydroquinonedibenzoquinone by Comproportionation
1Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan.
Abstract:
Triptycenetribenzoquinone (BQ)3, where the three benzene rings of triptycene are replaced by 1,4-benzoquinone (BQ) rings, is known to be reduced to triptycenetrihydroquinone (HQ)3. In contrast, a molecule where both BQ and HQ moieties coexist in a triptycene framework has never been reported. In this study, triptycenemonohydroquinonedibenzoquinone ((HQ)1(BQ)2) in which one HQ unit and two BQ units coexist was generated by comproportionation between (BQ)3 and (HQ)3 and isolated by recrystallization. We obtained two types of crystals with different hydrogen-bonding structures by changing the cosolvents.
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