Synthetic communications

Efficient synthesis of 4-ethoxycarbonyl pyrazolin-5-one derivatives

JC Jung, EB Watkins, MA Avery

文献索引：Jung, Jae C.; Watkins, E Blake; Avery, Mitchell A. Synthetic Communications, 2002 , vol. 32, # 24 p. 3767 - 3777

被引用次数: 13

摘要

ABSTRACT Concise and efficient methods for the preparation of 3-substituted 4- ethoxycarbonylpyrazolin-5-ones are described. The synthetic strategies involve carbon- acylation in the presence of base, followed by ring cyclization with hydrazine or hydrazine monohydrochloride.

570-08-1

瑞吡司特中间体

22524-02-3

特戊酰丙二酸二乙酯

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~45%

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~21%

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~89%

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~91%

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