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Reactions of 4-bromo-2, 4, 6-tri-t-butyl-2, 5-cyclohexadien-1-one (1) with ethylene glycol (2a), and di-(2b) and triethylene glycol (2c) were carried out under various conditions. Pyridine can act as ...a good catalyst for the preparation of the corresponding dienoxy alcohols (3a-c). However, ω, ω'-bis (4-oxo-2, 5-cyclohexadien-1-yl) ethers (4a-c) were obtained in considerable yields only when α-picoline was used as a catalyst.続きを見る
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