2-Pyrazolines from 1,3 - dipolar cycloaddition of diazomethane to arylsulfonylethenes
作者:Venkatapuram Padmavathi、Mudigonda Rajagopala Sarma、Adivireddy Padmaja、Dandu Bhaskar Reddy
DOI:10.1002/jhet.5570400531
日期:2003.9
Novel 2-pyrazolines were obtained by the cycloaddition of diazomethane to bis(arylsulfonylethenyl)-sulfones (3) and 1-arylsulfonyl-2-styrylsulfonylethenes (7). Dehydrogenation of 2-pyrazolines with chloranil gave pyrazoles.
通过将重氮甲烷环加成到双(芳基磺酰基乙烯基)-砜(3)和1-芳基磺酰基-2-苯乙烯基磺酰基(7)中,获得了新型的2-吡唑啉。将2-吡唑啉用氯乙腈脱氢得到吡唑。