Reduction of nitro compounds to the corresponding amines has been carried out efficiently with NaBH4 in the presence of bis-thiourea complexes of bivalent cobalt, nickel, copper and zinc chlorides, [MII(tu)2Cl2]. The reactions were carried out under solvent-free conditions at room temperature to afford amines in high to excellent yields. Comparison of the results showed that the reducing capability of NaBH4 was influenced with bis-thiourea complexes as: Co(tu)2Cl2> Ni(tu)2Cl2> Cu(tu)2Cl2> Zn(tu)2Cl2.

Behzad Zeynizadeh and Serve Sorkhabi