Study of the mechanism of the polarographic reduction of N-acylsydnoneimines
The polarographic reduction of the N-phenylcarbamoyl derivative of 3-(β -phenylisopropyl)-sydnoneimine (“sidnokarb”) in aqueous alcohol media was investigated. It is shown that, depending on the protonation rate of both the starting depolarizer and the intermediates in the reduction of sidnokarb, six or four electrons may be consumed to give, in the first case, a derivative of the amino acid amide and ammonium ions and, in the second case, the corresponding hydrazine derivative.