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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 20, Number 6
JKCSEZ 20(6)
December 20, 1976 

Studies on the Aromatic Dihydrazines (Ⅱ). Condensation Reaction Between p-Phenylenedihydrazine and Dicarbonyl Compounds

방향족 디히드라진에 관한 연구 (제2보). 파라페닐렌디히드라진과 디카르보닐 화합물과의 축합반응
Woo Young Lee

파라페닐렌디히드라진(PPDH)과 디카르보닐화합물을 반응시켜서 생기는 축합생성물들의 구조를 밝혔다. 아세틸아세톤과의 반응에서는 고리화합물인 1,1'-p-페닐린-bis-3-메틸-5-피라졸론이 얻어졌으며, 디아세틸과의 반응에서는 역시 고리화합물인 1,1'-p-페닐렌-bis-메틸-5-피라졸론이 얻어졌으며, 디아세틸과의 반응에서는 디아세틸 p-페닐렌디히라존이 생성되었다. 그 밖의 디카르보닐화합물에서 얻은 축합생성물은 불안정하여 구조결정이 어려웠다.

Structures of the products obtained from the condensation reaction between p-phenylenedihydrazine(PPDH) and dicarbonyl compounds were determined, From the reaction with PPDH, acetylacetone produced a cyclic compound, 1,1'-p-phenylene-bis-3, 5-dimetylpyrazole; ethylacetoacetate also formed a cyclic compound, 1,1'-p-phenylene-bis-3-methyl-5-pyrazolone; diacetyl yielded a simple dihydrazone, diacetyl p-phenylenedihydrazone. Condensation products from the other dicarbonyl compounds being of generally unstable, the structure determination was quite difficult.

500 - 506
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