Fukui, Hideto;Inoguchi, Kiyoshi;Nakano, Jun published 《Synthesis of the bicyclic secondary amines via dimethylaminomethylene ketones from 3-pyrrolidone and 4-piperidone》. The research results were published in《Heterocycles》 in 2002.Synthetic Route of C5H9Cl2N3 The article conveys some information:
The reaction of N-protected 3-pyrrolidone and 4-piperidone with N,N-dimethylformamide di-Me acetal gave the dimethylaminomethylene ketones, which reacted with several types of hydrazines, amidines, and guanidine to afford the secondary amines having fused ring system. And 1,4,5,6-Tetrahydro-pyrrolo[3,4-c]pyrazole,hydrochloride (cas: 157327-47-4) was used in the research process.
Pyrazole and its derivatives are considered a pharmacologically important active scaffold that possesses almost all types of pharmacological activities. Synthetic Route of C5H9Cl2N3 So, 1,4,5,6-Tetrahydro-pyrrolo[3,4-c]pyrazole,hydrochloride(cas: 157327-47-4) has been used in several drug studies
Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics