94243-50-2Relevant academic research and scientific papers
Synthesis and Spectral Studies of Some 3-Arylsulphonyl-2-pyrazolines
Reddy, D. Bhaskar,Reddy, D. Bhaskara,Reddy, N. Subba,Balaji, T.
, p. 983 - 985 (2007/10/02)
The cycloaddition of diazomethane to aryl vinyl sulphones in the presence of triethylamine at 0 deg C gives 3-arylsulphonyl-2-pyrazolines (2).The orientation of addition has been arrived on the basis of IR, PMR and 13C NMR spectral data.The characteristic N-H absorption of 2 and the absence of this in 1-arylsulphonyl- and 1-benzoyl-2-pyrazolines (3 and 4) together with A2B2 pattern observed for 2, 3 and 4 establish the structure of 2.
