Influence of Alkyl Chain Length and Structure on the Extraction of Copper(II) from Aqueous Acid by 5-Alkyl-2-hydroxybenzaldoximes in Hydrocarbon Solvents: Diffusion Coefficients of Extractants and Their Complexes

The synthesis of oxime reagents from natural and semi‐synthetic phenolic lipid and alkanoic acid resources for the solvent recovery of copper(II)

“…After this time, argentation TLC monitoring indicated almost complete reduction to the saturated compound and the solution was concentrated in vacuo to approximately 150 cm 3 , cooled, acidified with hydrochloric acid (50 cm 3 ) and extracted with diethyl ether (3 × 200 cm 3 ). The ethereal extract was washed with sodium chloride solution, dried (sodium sulfate), and the ether evaporated to leave a solid which was crystallised (60-80…”

“…Anacardic acid (3),(135.4 g,) in methylated spirit (975 cm 3 ) was reduced 14 with a total of hydrazine hydrate (103.9 g), in methylated spirit (1180 cm 3 ) at 50…”

“…This was equipped with an 8cm flowthrough cell, an Altex (Anachem) metering pump (model 110A), a Rheodyne injection system (model 7120) with a 20cm loop, a Servoscribe recorder (model 1s) and a Chemtronics Supergrator 3A programmable computing integrator. Gradient elution was effected with a second similar Altex pump and an Altex programmer (model 420 3 ) and the stirred mixture warmed at 40…”

“…Isoanacardic acid (2) was obtained by carboxylation of cardanol 13 and (150 g) was reduced with a total of hydrazine hydrate (126 g) in methylated spirit (950 cm 3 ) at 40…”

“…Commercial reagents are still based on petrochemical intermediates, 4-t-nonylphenols obtained by the alkylation of phenol with C 9 alkenes. In the last decade, aspects of the use of Acorga 5100 have continued to be studied, 2,3 and alternative reagents 4 and technology 5 -7 have been investigated worldwide. The objective of the present work, partially patented and completed some years ago, 8,9 was to synthesise aldoximes and ketoximes from renewable resources.…”