The reduction of azo compounds to hydrazo compounds in the presence of magnesium powder and ammonium chloride at room temperature was completed within 310 min. The course of reaction was monitored by TLC. The products were obtained in good yields (9095%) and the products were characterised by comparison of their melting points, TLC and IR spectra with authentic samples. The disappearance of a strong absorption band between 1630 and 1575 ...
