Microwave Assisted Green Synthesis and Entomological Characteristic Studies of Novel Chromium(III) complexes of dithiocarbamates derived from glycine, alanine, proline, Valine and Norvaline α-amino acids

Abstract

A series of chromium (III) complexes derived from α-amino acids, of the type Cr[S2CNHCH(R)COOH]3 (where R = H, CH3, C3H5, CH(CH3)2, (CH2)2CH3), were synthesized by microwave irradiation (solvent free and solid support) methods. Among solid supported microwave irradiation better yields are obtained in acidic alumina as compared to silica, neutral alumina, and basic alumina. The α-amino acid-metal complexes were characterized by FT-IR and UV–Vis spectrophotometers to determine the complex formation. The synthesized tris (dithiocarbamato) chromium(III) complexes showed plurality of uses as microbiocides and insecticide for controlling undesirable microorganisms and pests in crop protection, protection of materials, household, veterinary pests, pest management and control in vegetable crops, ornamental plants, floriculture, medicinal and economic plants apart from being cytotoxic. The present paper is focused on the insecticidal activity of the title compounds found to be effective against Spedoptera litura larva and Tetranychus urticae in entomological studies.