1-(4-Nitrophenyl)pyrrole-2-carbaldehyde and its 5-bromo- and 4,5-dibromo derivatives react with hydrazoic acid in chloroform in the presence of Mg(ClO4)(2).2.5H(2)O (Schmidt reaction) to form the corresponding pyrrole-2-carbonitriles.
1-(4-Nitrophenyl)pyrrole-2-carbaldehyde and its 5-bromo- and 4,5-dibromo derivatives react with hydrazoic acid in chloroform in the presence of Mg(ClO4)(2).2.5H(2)O (Schmidt reaction) to form the corresponding pyrrole-2-carbonitriles.