Issue 0, 1984

Synthesis and properties of cyclohepta[de]naphthalene-7,8-dione, o-pleiadienequinone

Abstract

Cyclohepta[de]naphthalene-7,8-dione, o-pleiadienequinone (2), was synthesized by hydrolysis of the acenaphthylene–dichloroketene adduct (5); chloro(hydroxy)ketone (6) was the precursor. Compound (2) afforded the triacetate (16) by a Thiele–Winter-type reaction and a phenalene compound (19) by alkaline hydrolysis. Spectral data suggest that the dione (2) has contributions from such canonical forms as 2,3-(2a) and/or 4,5-benzotropolonate (2b) structures. The polarographic E½ value of the dione (2) is –0.23 V at pH 5.28 which is between that of 1,2-naphthoquinone and anthraquinone.

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1984, 1465-1470

Synthesis and properties of cyclohepta[de]naphthalene-7,8-dione, o-pleiadienequinone

J. Tsunetsugu, M. Kanda, M. Takahashi, K. Yoshida, H. Koyama, K. Shiraishi, Y. Takano, M. Sato and S. Ebine, J. Chem. Soc., Perkin Trans. 1, 1984, 1465 DOI: 10.1039/P19840001465

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