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The reformatsky reaction of 1-acyl-3,5-dimethylpyrazoles. A convenient preparation of 4-amino-3-oxoalkanoic acid derivatives

✍ Scribed by Choji Kashima; Isanobu Kita; Katsumi Takahashi; Akira Hosomi


Book ID
112131232
Publisher
Journal of Heterocyclic Chemistry
Year
1995
Tongue
English
Weight
187 KB
Volume
32
Category
Article
ISSN
0022-152X

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A convenient synthesis of 2-amino-4H-1,3
✍ Ho Sik Kim; Tong Eun Kim; Seong Uk Lee; Dong Il Kim; Sung Wook Han; Yoshihisa Ok 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 380 KB

## Abstract The reaction of 6‐chloro‐2‐(1‐methylhydrazino)quinoxaline 4‐oxide 5 with a 2‐fold molar amount of ethyl chloroglyoxalate gave ethyl 8‐chloro‐4‐methyl‐4__H__‐1,3,4‐oxadiazino[5,6‐__b__]quinoxaline‐2‐carboxylate 6, whose reaction with hydrazine hydrate afforded the C~2~‐hydrazinocarbonyl