Yu, Lingbo published the artcileSynthesis of 1-alkyl-4-amino-5-pyrazolecarboxylate and ethyl 1-alkyl-5-amino-4-pyrazolecarboxylate, Product Details of C7H11N3O2, the publication is Zhongguo Haiyang Daxue Xuebao, Ziran Kexueban (2006), 36(3), 54-58, database is CAplus.
Synthetic routes to two kinds of substituted pyrazole derivatives were designed based on an anal. of their structural features. The methods for preparing such heterocyclic intermediates, including an N-alkylation reaction condition are researched. The structures of 1-cyclopentyl-4-nitro-5-propyl-1H-pyrazole-3-carboxylic acid Et ester and 1-cyclopentyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid Et ester were identified by HMBC and INEPT NMR techniques.
Zhongguo Haiyang Daxue Xuebao, Ziran Kexueban published new progress about 23286-70-6. 23286-70-6 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Amine,Ester, name is Ethyl 5-amino-3-methyl-1H-pyrazole-4-carboxylate, and the molecular formula is C15H21BO3, Product Details of C7H11N3O2.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics