Study on synthesis of ethyl 3-ethyl-5-pyrazolecarbonylate(3-乙基-5-吡唑酸乙酯的合成研究)

Study on synthesis of ethyl 3-ethyl-5-pyrazolecarbonylate(3-乙基-5-吡唑酸乙酯的合成研究)

在合成中间体丙酰丙酮酸乙酯中，对反应温度和反应溶剂进行了优化试验，发现用乙醚作溶剂在5 ℃以下时，反应收率和中间体质量分数分别达到90% 和95% 以上.制备3-乙基-5吡唑酸乙酯中，对反应温度和丙酰丙酮酸乙醋与水合肼摩尔比进行了优化试验，发现在0 ℃以下，摩尔比在1：1.2以上时，目标产物的质量分数和收率达到94% 和87% 以上....

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Bibliographic Details
Main Authors:	TANCheng-xia(谭成侠), SHENDe-long(沈德隆), WENGJian-quan(翁建全), FANDe-fang(樊德方)
Format:	Article
Language:	zho
Published:	Zhejiang University Press 2005-03-01
Series:	Zhejiang Daxue xuebao. Lixue ban
Subjects:	丙酰丙酮酸乙酯 3-乙基-5-吡唑酸乙酯吡螨胺合成
Online Access:	https://doi.org/zjup/1008-9497.2005.32.2.204-206

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