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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 45, Number 4
JKCSEZ 45(4)
August 20, 2001 

Synthesis of Pyrazolylquinoxalines and Pyrazolylpyrrolo[1,2-a]-quinoxalines

Pyrazolylquinoxalines류 및 Pyrazolylpyrrolo[1,2-a]-quinoxaline류의 합성
Ho Sik Kim, Seong Uk Lee, Won Young Jeong, Sung Wook Han, Dong Il Kim, Yoshihisa Kurasawa

김호식, 이성욱, 정원영, 한성욱, 김동일, Yoshihisa Kurasawa
6-Chloro-2-hydrazinoquinoxaline(4) 또는 6-chloro-hydrazinoquinoxaline 4-oxide(7)를 alkyl(ethoxymethylene)cyanoacetate류와 반응시켜 prazolylquinoxaline류(5,8)를 합성하였다. 그리고 화합물 8을 dimethyl acethylenedicarboxylate와 반응시켜 1,3-쌍극성 고리와 첨가반응과 고리변환에 의하여 pyrazolylpyrrolo[1,2-a]quinoxaline류(9)를 합성하였다.

The reaction of 6-chloro-2-hydrazinoquinoxaline(4) or 6-chloro-2-hydrazinoquinoxaline 4-oxide(7) with alkyl (ethoxymethylene)cyanoacetates gave pyrazolylquinoxalines(5, 8). The reaction of compounds 8 with dimethyl acetylenedicarboxylate resulted in the 1,3-dipolar cycloaddition reaction and then ring transformation to afford pyrazolylpyrrolo[1,2-a]quinoxalines(9).

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