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Several S-containing organic compounds were used as ligands for Cu(I)-catalyzed acetylene hydration under mercury free condition. The results show that the minimum selectivity for acetaldehyde is significantly improved from 3.61 to 87.56%, while the minimum conversion of C2H2 is also enhanced from 14.45 to 34.92%, owing to the addition of mercaptosuccinic acid. The possible reasons for the improvement...
Cu2O/2,6-bis(2-methylhydrazine-1-carbonyl)pyridine 1-oxide was found to be an efficiently catalytic system for the N-arylation of imidazole, indole, benzimidazole, pyrrole, benzylamine and ethanolamine with aryl iodides and bromides by using NaOH as base in the presence of 20 mol% (n-Bu)4NBr, and water as solvent at 130 °C in 24 h, and giving the N-arylated products in moderate to excellent yields...
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