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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 36, Number 2
JKCSEZ 36(2)
April 20, 1992 

Reactions of 3-Alkylidene-2,4-pentanediones with Arylhydrazines

3-알킬리덴-2,4-펜탄디온과 아릴히드라진의 반응
Se Young Lee, Seung Hoi Kim, Youn Young Lee, Yang Mo Goo

이세영, 김승회, 이윤영, 구양모
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.

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.

311 - 317
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