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Reaction of 2-(5-aminopyrazol-1-yl)quinoxaline 4-oxides with dimethyl acetylenedicarboxylate

✍ Scribed by Yoshihisa Kurasawa; Ritsuko Katoh; Fumiko Mori; Minori Fukuchi; Megumi Okamoto; Atsushi Takada; Ho Sik Kim; Yoshihisa Okamoto


Book ID
112130387
Publisher
Journal of Heterocyclic Chemistry
Year
1992
Tongue
English
Weight
166 KB
Volume
29
Category
Article
ISSN
0022-152X

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## Abstract A new method for the preparation of 1,4,5‐trisubstituted (imidazol‐2‐yl)acetates, based on the reaction of the corresponding imidazole 3‐oxides with dimethyl acetylenedicarboxylate (DMAD) is described. Formation of the products is rationalized by a formal 1,3‐dipolar cycloaddition and s