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New liquid crystals with a seven-membered core such as 2-(4-alkoxybenzoyloxy)-5-alkoxytropones, 2-(4-alkoxybenzyloxy)-5-alkoxytropones, 2-acyloxy-5-alkoxy-tropones, 2, 5-diacyloxytropones, 2-(2-alkeny...loxy)-5-alkoxytropones, 5-alkylamino-2-(4-alkoxybenzoyloxy)tropones, and 5-alkoxy-2-(4-alkylaminobenzoyloxy) tropones, were prepared. In these liquid crystals, the tropone carbonyl group played important roles when these compounds exhibit mesophases; it worked as an accepter of an intramolecular acyl migration, a polar lateral substituent, and an accepter of an intermolecular hydrogen bond. These features are characteristic of troponoids.続きを見る
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