3-methoxy-3-methylbutanal

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Dess-Martin reagent (15.0 g) was added to a chloroform solution (35 ml) of 3-methoxy-3-methyl-1-butanol (3.3 g) under ice cooling and stirred at room temperature for 5 hours. Chloroform was added to the reaction mixture and the organic layer was washed with an aqueous solution of 20 wt. % sodium thiosulfate, a saturated aqueous solution of sodium hydrogencarbonate and saturated brine. The organic layer was dried over magnesium sulfate and the solvent was distilled off under reduced pressure, thereby obtaining a crude product containing 3-methoxy-3-methylbutanal. Hydroxyamine hydrochloride (3.5 g) was added to a pyridine solution of the obtained crude product (30 ml) under ice cooling and stirred at room temperature overnight under nitrogen atmosphere. Ethyl acetate was added to the reaction mixture and the organic layer was washed with water, 1M-hydrochloric acid aqueous solution and saturated brine. The organic layer was dried over magnesium sulfate and the solvent was distilled off under reduced pressure. The residue was purified by column chromatography (KP-Sil, Biotage, ethyl acetate/n-hexane=10 to 50%), thereby obtaining (N-hydroxy-3-methoxy-3-methylbutan-1-imine (1.4 g) as a colorless oily substance. the organic layer was washed with an aqueous solution of 20 wt. % sodium thiosulfate The organic layer was dried over magnesium sulfate the solvent was distilled off under reduced pressure obtaining a crude product obtained crude product (30 ml) under ice cooling stirred at room temperature overnight under nitrogen atmosphere the organic layer was washed with water, 1M-hydrochloric acid aqueous solution and saturated brine The organic layer was dried over magnesium sulfate the solvent was distilled off under reduced pressure The residue was purified by column chromatography (KP-Sil, Biotage, ethyl acetate/n-hexane=10 to 50%)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Dess-Martin reagent (15.0 g) was added to a chloroform solution (35 ml) of 3-methoxy-3-methyl-1-butanol (3.3 g) under ice cooling and stirred at room temperature for 5 hours. Chloroform was added to the reaction mixture and the organic layer was washed with an aqueous solution of 20 wt. % sodium thiosulfate, a saturated aqueous solution of sodium hydrogencarbonate and saturated brine. The organic layer was dried over magnesium sulfate and the solvent was distilled off under reduced pressure, thereby obtaining a crude product containing 3-methoxy-3-methylbutanal. Hydroxyamine hydrochloride (3.5 g) was added to a pyridine solution of the obtained crude product (30 ml) under ice cooling and stirred at room temperature overnight under nitrogen atmosphere. Ethyl acetate was added to the reaction mixture and the organic layer was washed with water, 1M-hydrochloric acid aqueous solution and saturated brine. The organic layer was dried over magnesium sulfate and the solvent was distilled off under reduced pressure. The residue was purified by column chromatography (KP-Sil, Biotage, ethyl acetate/n-hexane=10 to 50%), thereby obtaining (N-hydroxy-3-methoxy-3-methylbutan-1-imine (1.4 g) as a colorless oily substance. the organic layer was washed with an aqueous solution of 20 wt. % sodium thiosulfate The organic layer was dried over magnesium sulfate the solvent was distilled off under reduced pressure obtaining a crude product obtained crude product (30 ml) under ice cooling stirred at room temperature overnight under nitrogen atmosphere the organic layer was washed with water, 1M-hydrochloric acid aqueous solution and saturated brine The organic layer was dried over magnesium sulfate the solvent was distilled off under reduced pressure The residue was purified by column chromatography (KP-Sil, Biotage, ethyl acetate/n-hexane=10 to 50%)