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- W564907986 startingPage "1192" @default.
- W564907986 abstract "The reaction of benzenetriols (phloroglucinol [1] pyrogallol [2] and 1, 2, 4-benzenetriol [3]) with 1-chloro-3-methy1-2-butene (prenyl chloride) in the presence of 85% phosphoric acid or metallic sodium was discussed. Methylation of the reaction mixture was carried out with dimethyl sulfate and the products were analyzed by gas chromatography. In the presence of 85% phosphoric acid, 2, 2-dimethylchromans ([4], [6], [8]) were obtained mainly as usual. In the presence of metallic sodium, alkenyltrimethoxybenzene ([5], [7], [9]) were obtained in the yields of 52, 42% and 19%, respectively. Especially in the case of [3], 6, 7dimethoxy-2, 2-dimethylchroman [8] (37% yield) was obtained in a higher yield than [9]. By using the prepurified sodium phenoxide, [5] and [7] could be obtained in fairly good yields (67% and 61%, respectively) in the case of [1] and [2]." @default.
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- W564907986 date "1981-01-01" @default.
- W564907986 modified "2023-09-27" @default.
- W564907986 doi "https://doi.org/10.1246/nikkashi.1981.1192" @default.
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