3-알킬리덴-2,4-펜탄디온과 아릴히드라진의 반응

Reaction of 3-alkylidene-2,4-pentanediones(1) with arylhydrazines in methanol afforded 4-acetyl-(2), 4-(1-methoxyalkyl)-(3), or 4-vinylpyrazole derivatives(4). 3-(2,2,2-Trichloroethylidene)-2,4-pentanedione(9) reacted with arylhydrazines to give 4-acetyl-1-aryl-3-methylpyrazoles(11). Possible mechan...

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Veröffentlicht in:Journal of the Korean Chemical Society 1992, Vol.36 (2), p.311-317
Hauptverfasser: 이세영(Se Young Lee), 김승회(Seung Hoi Kim), 이윤영(Youn Young Lee), 구양모(Yang Mo Goo)
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Sprache:kor
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Zusammenfassung:Reaction of 3-alkylidene-2,4-pentanediones(1) with arylhydrazines in methanol afforded 4-acetyl-(2), 4-(1-methoxyalkyl)-(3), or 4-vinylpyrazole derivatives(4). 3-(2,2,2-Trichloroethylidene)-2,4-pentanedione(9) reacted with arylhydrazines to give 4-acetyl-1-aryl-3-methylpyrazoles(11). Possible mechanisms for these reactions were proposed. 3-알킬리덴-2,4-펜탄디온(1)과 아릴히드라진을 메탄올에서 반응시키면 4-아세틸(2), 4-(1-메톡시알킬)-(3) 또는 4-비닐피라졸 유도체(4)가 얻어진다. 3-(2,2,2-트리클로로에틸리덴)-2,4-펜탄디온(9)과 아릴히드라진과의 반응에서는 4-아세틸-1-아릴-3-메틸피라졸(11)이 생성된다. 이 반응들의 가능한 메카니즘을 제시하였다.
ISSN:1017-2548
2234-8530