Synthesis and Reactivities of 1,5- and 1,7-Azulenequinone Derivatives. A Highly Convenient,One-Pot Synthesis of 3-Bromo-1,5- and −1,7-Azulenequinones by Bromination of Azulene, |
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Authors: | Hidetsugu Wakabayashi Teruo Kurihara Kimio Shindo Masaaki Tsukada Paw-Wang Yang Masafumi Yasunami Tetsuo Nozoe |
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Abstract: | A very convenient, one-pot synthesis (over 80% yield) of 3-bromo-1,5- and ?1,7-azulenequinones has been developed by bromination of azulene in aqueous tetrahydrofuran. Reduction of 3-bromo-1,5- and ?1,7-azulenequinones with tin or zinc powder in acetic acid gave the parent 1,5- and 1,7-azulenequinones, and further reduction products. |
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Keywords: | Synthesis of 3-bromo-1,5- and 1,7-azulenequinones 1,5- and 1,7-Azulenequinone Azulenes Bromination One-Pot synthesis |
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