• 方法:以芦丁原料酰化水解糖苷缩合脱保护合成目标合物

    Methods: Rutin was utilized as the starting material. The target compounds were produced via benzoylation, hydrolysis, glycosidation and deproteination.

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  • 设计了以国内生产甲酚为原料,经过、再醇解等合成间羟基甲醇的合成路线

    A new route to synthesize the target compound starting from m-cresol, which undergoes four steps including acetylation, chloration, esterification, and alcoholysis was proposed.

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  • 以对氨基水杨酸为原料,经酯反应得乙氧酯,收率为87.4%。

    Ethopabate is prepared via esterification, acylation and alkylation from p-aminosalicylic acid in87.4% overall yield.

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  • 氯为原料,酰化,还原,环合等反应合成左旋西替利嗪盐酸盐,反应收率为8.05%。

    Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05%.

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  • 考察HZ - 1沸石交换次数制备条件用量酰化反应影响。

    The effects of the catalyst dosage and the preparation conditions of HZ-1 zeolite, for example, number of exchange times on the benzoylation of toluene were studied.

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  • 为原料,酰化,还原,环合等反应合成左旋西替利嗪盐酸盐,反应收率为8。05%。

    Levocetirizine dihydrochloride was prepared from benzoyl chloride by acids lation hydrogenation cyclization with an overall yield of8.05%.

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  • 介绍了以亚甲基为原料,经还原无色亚甲基蓝的方法。

    Bengoyl leuco methylene blue is prepared from methylene blue by reduction and acylation.

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  • 二甲酰化壳聚糖多种常见有机溶剂中能形成胆甾液晶

    N-phthaloyl chitosan is able to form cholesteric liquid crystalline phase in concentrated solutions of some organic solvents, including DMF, DMSO, DMAc and pyridine.

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  • 以叔戊和笨酐原料,通过关环合成了2—戊基蒽醌,改进了各步合成工艺条件,酰化收率80.2%,关环产品收率81.4%。

    An improved and optimum process for preparing 2-Amylanthraquinone by re-acting t-amylbenzene with phthalic anhydride, involving Friedel-Crafts acylation (yield 80. 2%) and cyclization(yield 81.4%).

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  • 发明涉及一种用于制备链烯基芳族合物并二氢吡喃合物和其衍生物的方法。

    The present invention relates to a process for the manufacture of alkenylated hydroxylated aromatic compounds, of chroman compounds and of their acylated derivatives.

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  • 通过对(-)-表儿茶物的分析研究单宁酰化位置次序从而比较合理地说明了异氰酸酯反应羟基的位置。

    The position and sequence of benzoylation in tannin were studied by the analysis of benzoylated (-) epicatechin derivatives. The position of hydroxyl groups which react with isocya…

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  • 通过对(-)-表儿茶物的分析研究单宁酰化位置次序从而比较合理地说明了异氰酸酯反应羟基的位置。

    The position and sequence of benzoylation in tannin were studied by the analysis of benzoylated (-) epicatechin derivatives. The position of hydroxyl groups which react with isocya…

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