2 documents found, page 1 of 1
Determination of oxadiazon residues in the field treated soil with and without ...
Reis, Marcelo Rodrigues dos; Mendes, Kassio Ferreira; Passos, Ana Beatriz Rocha de Jesus; Inoue, Miriam Hiroko; Silva, Antônio AlbertoThe behavior of oxadiazon (5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2 (3H)-one) in the soil may be influenced by organic material content. The objective of this study was to chromatographically determine soil oxadiazon residue content as a function of organic material and soil depth. A randomized block design was used, with treatments arranged in a scheme comprising 2 × 4 × 8 + 1 sub-sub...
Synthesis of new phytogrowth-inhibitory substituted Aryl-p-Benzoquinones
Barbosa, Luiz Cláudio de Almeida; Alvarenga, Elson Santiago de; Demuner, Antônio Jacinto; Virtuoso, Luciano Sindra; Silva, Antônio AlbertoReaction of [(2-alkyloxy)methyl]-1,4-dimethoxybenzene 10 (alkyl=butyl, hexyl, decyl, tridecyl, tetradecyl, hexadecyl, and octadecyl) with ceric ammonium nitrate in order to produce p-benzoquinones (=cyclohexa-2,5-diene-1,4-diones) afforded 5-[(alkyloxy)methyl]-2-(4-formyl-2,5-dimethoxyphenyl)benzo-1,4-quinones 12a-12g in yields that varied from 46 to 97%, accompanied by 2-[(alkyloxy)methyl]benzo-1,4-quinones 11...