Hydroxamate composition and method for froth flotation
申请人:——
公开号:US20040211933A1
公开(公告)日:2004-10-28
The invention relates to a hydroxamate composition for collection of minerals by froth flotation, the composition including an aqueous mixture of hydroxamate wherein the pH of the composition is at least 11 and a method of collecting mineral values from an aqueous ore slurry by froth flotation.
Conversion of Carboxylic Acids to Amines and Their Derivatives<sup>1</sup>
作者:G. Bryant Bachman、Joel E. Goldmacher
DOI:10.1021/jo01032a020
日期:1964.9
The Mechanism of Dephosphorylation of Bis(2,4-dinitrophenyl) Phosphate in Mixed Micelles of Cationic Surfactants and Lauryl Hydroxamic Acid
作者:Marcelo Silva、Renata S. Mello、M. Akhyar Farrukh、Janio Venturini、Clifford A. Bunton、Humberto M. S. Milagre、Marcos N. Eberlin、Haidi D. Fiedler、Faruk Nome
DOI:10.1021/jo9017638
日期:2009.11.6
involving concurrent nucleophilicattack by hydroxamateion (i) on the aromatic carbon, giving an intermediate that decomposes to undecylamine and 2,4-dinitrophenol, and (ii) at phosphorus, giving an unstable intermediate that undergoes a Lossen rearrangement yielding a series of derivatives including N,N-dialkylurea, undecylamine, undecyl isocyanate, and carbamyl hydroxamate.