Abstract
Choline nitrate is prepared by the anion exchange of choline chloride and sodium nitrate. Also, choline chloride gives a low melting point mixture in the presence of aluminum nitrate. The use of choline nitrate as a safe and environmentally friendly solvent and reactant provides an efficient procedure, simple and mild for oxidizing alcohols and organic halides to aldehydes. Aldehydes using choline nitrate and trimethylsilyl chloride mixture as a selective oxidant and without using catalysts were synthesized from alcohols and the relevant halides. Benzyl chloride in the presence of choline nitrate and trimethylsilyl chloride at 70 °C produced the corresponding aldehyde product with 87% efficiency, while benzyl alcohol at 50 °C with 90% efficiency performed this conversion.The prepared aldehyde is easily separated from the reaction medium by vacuum distillation or extraction by organic solvent without the need for further purification.
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