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Updated: Aug 13, 2026

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
Published on: April 1, 2013
Synthesis and spectral properties of a highly soluble push-pull type of quinoidal thiophenes
Toshiaki Takahashi1, Kazuo Takimiya, Tetsuo Otsubo
1Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
Abstract:
[structures: see text] A series of push-pull quinoidal thiophenes 5a,b and 6a-c substituted with an electron-donating 1,3-dithiol-2-ylidene unit and an electron-withdrawing dicyanomethylene unit at the terminals is developed. They are highly soluble in common solvents and deeply colored with extension of the thienoquinoid skeleton.
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