115247-55-7

Upstream product

• 85561-52-0 1-phenyl-4,5-diaminopyrazole 
• 122128-87-4 5-amino-4-nitroso-1-phenylpyrazole 
• 826-85-7 1-phenylpyrazol-5-amine 
• 191230-73-6 5-amino-4-ethoxycarbonylamino-1-phenylpyrazole 
• 56-23-5 tetrachloromethane 
• 98946-22-6 5-amino-1-phenyl-1H-pyrazole-4-carbonyl azide 

Relevant academic research and scientific papers

A new efficient route to imidazo[4,5-c]pyrazol-5-ones

The synthesis of imidazo[4,5-c]pyrazol-5-ones (6) is reported. 5-Amino-4-ethoxycarbonylaminopyrazoles 3a-g when heated at 200°for 2 hours afford 6a-g. In a similar manner imidazo[4,5-c]pyrazol-5-one (6a) is readily obtained from 4-amino-5-ethoxycarbonylaminopyrazole (5a).