Ethylene glycol, copper complex

Ethylene glycol diethyl ether does not influence the spectrum of N- n-octyl)-2-pyridylmethanimine, but does alter the spectrum of the copper complex. As the amount of (EtO)2EG is increased the spectrum shifts towards that of the free ligand. An addition of ethylene oxide species favors a more loose catalyst structure. This can be interpreted as evidence that the ethylene oxide groups co-ordinate to the copper in competition with the... 

The first copper-mediated C—S coupling of aiyl boronic acids with alkyl thiols was reported in the presence of an organic base, pyridine (Scheme 20.54) [163]. Copper complexes, Cul-neocuproine [164], Cul-ethylene glycol [165], Cul-bipyridine/air [166], and CuSO -l,10-phenanthroUne/O, [167], have been subsequently explored for the coupling of aryl halides and boronic acids with... 

Remelli et al. (168) described a selector based on histidine. With this chiral selector L-hr-n-decylhistidine (Fig. 5(c)) the simultaneous enantiomeric separation of D,L-tiyptophan and D,L-phe-nylalanine was successfully performed on hydrophobic layers with MeOH-acetonitrile-THF-water (7.3 5.9 33.9 52.9, v/v/v/v) as eluent. Sinibaldi et al. (165) resolved D,L-dansyl amino acids on reversed phase TLC plates pretreated with a copper -complex of poly-L-phenylalanine amide (Fig. 5 (d)). The polymeric ligand was synthesized by the reaction of optically active amide with ethylene glycol diglycyl ether. The method makes use of a sophisticated liquid chroinatogr q)h for obtaining the desired polymer fraction which is subsequently used for the LEC, and this might limit the application of the separation procedure. However, a simple method is performed by Bhushan et al. (169). Here L-proline was used as a chiral selector on normal phase silica gel (169) and amino acids were resolved with the eluent systems n-butanol-acetonitrile-water (6 2 3, vWv), chloroform-meth-anol-propionic acid (15 6 4, v/v/v) and acetonitrile-methanol-water (2 2 1, v/v/v). 

Additives used in final products Antistatics carbon black, copper complex of polyacrylic add, ethoxylated amines, fatty diethanol amines, glycerol monostearate, graphite, ionomer, lauric diethanolamide, polyethylene glycol, quaternary ammonium compound, trineoalkoxy zirconate Antiblocking diatomaceous earth, natural silica, slloxane spheres, synthetic silica, talc, zeolite Blowing agents Release stearyl erucamide Slip erucamide, ethylene bisoleamide, oleamide Process aid Thermal stibullzers UV stabilizers ... 

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