Lithium hydroxide, monohydrate → HCID 86648424, compound

Participants

Reaction Steps

To a solution of. Methyl-2-methyl-5-[4-(1-phenyl-ethylideneaminooxy)-butyl]-[1,3]dioxane-2-carboxylate (prepared as per example 1) (1.38 g) in a mixture of tetrahydrofuran and methanol was added another solution of LiOH.H2O (332 mg) in water and the reaction mixture was stirred at ambient temperature for about 18 hours. Solvent was evaporated under reduced pressure, water was added to the residue, acidified with 1N HCl to pH 6 and extracted with ethyl acetate. The combined organic extract was washed with water, brine solution, dried over sodium sulphate and evaporated under reduced pressure. Crude product was chromatographed (flash) over silica-gel using 25% ethyl acetate in hexane as an eluent to obtain 1 g of pure product.

Provenance & Evidence