325829-81-0Relevant academic research and scientific papers
A new route to 1,5-disubstituted 4-arylsulfonylpyrazoles by lithiation of 1-methyl-4-arylsulfonylpyrazoles
Hoffmann, Michael G.
, p. 9511 - 9518 (1995)
The arylsulfonylvinamidinium salts 1 reacted with hydrazine in refluxing ethanol to give rise to 4-arylsulfonylpyrazoles 2 in reasonable yield. Regioselective lithiation of N-methylpyrazoles 3 with LDA followed by treatment with various electrophiles affo
Reactivity of Bifunctional Alkenes with Diazomethane
Reddy, D. Bhaskar,Sarma, M. Rajagopala,Padmaja, A.,Padmavathi, V.
, p. 23 - 32 (2007/10/03)
The cycloaddition of diazomethane to 1-aroyl-2-arylsulfonylethenes (1) and 1,2-bis(arylsulfonyl)ethenes (IV) under different conditions led to a variety of pyrazolines and pyrazoles. The reactivity of pyrazolines was also studied by pyrolysis, nitrosation and acylation.
