Disubstituted pyrroles are prepared by cyclocondensation of aryl styryl sulfones and benzyl styryl sulfones with tosyl methyl isocyanide. Phenyl vinyl sulfone under similar conditions forms 3-benzenesulfonylpyrrole and/or 2-(2benzenesulfonylethyl)-4-benzenesulfonylpyrrole.
A new class of 1,2,3-selena/thiadiazoles and 2H-diazaphospholes were synthesized by exploiting -ketomethylene group in phenacylsulfonylacetic acid methyl ester.
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