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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 

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

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

이유영
Keywords
Abstract
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.

Page
500 - 506
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