T. Ueda et al., A NOVEL ONE-POT SYNTHESIS OF PYRROLES FROM 1,2,5-SELENADIAZOLE AND 1,3-DIKETONES, Journal of the Chemical Society. Perkin transactions. I, (16), 1994, pp. 2201-2202
A one-pot reaction of 4-methyl-3-phenylcarbamoyl-1,2,5- selenadiazole
2 and 1,3-diketones in the presence of zinc dust and acetic acid gave
1,2-disubstituted 3-methyl-4- phenylcarbamoylpyrroles 3.