以下为句子列表:
英文: Using ethyl cyanoacetate, triethyl orthoformate and methylhydrazine as main raw materials, the herbicide pyrazosulfuron was prepared through the reactions of substitution, amination, cylclization, diazotization and chlorosulfonation.
中文: 摘要以氰乙酸乙酯、原甲酸三乙酯和甲肼等为主要原料,通过取代、胺化、环化、重氮化和氯磺化等反应制得了除草剂吡嘧磺隆原料药。
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英文: Stirring at room temperature for h with fold thionyl chloride of the substrate、0mL acetone and 0.~0. mL trimethyl orthoformate per gram substrate respectively,the yield reached 90.%(adenosine) and 89.%(inosine).
中文: 最佳的工艺条件为:常温反应h,氯化亚砜用量为底物的 倍,丙酮和原甲酸三甲酯的用量分别为每克底物0mL和0.~0. mL,收率90.%(腺苷)和89.%(肌苷)。
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