Hydroxylamine → 5-Hydroxy-2-pyridinecarboxaldehyde

참여 물질

반응 단계

N-[5-(N',N'-Dimethylcarbamoyl)hydroxy-2-pyridine methylene] hydroxylamine. Dimethylcarbamoyl chloride (5.2 mL, 57 mmol) was added to a solution of N-(5-hydroxy-2-pyridinemethylene) hydroxylamine (6.53 g, 47 mmol) in 40 mL of pyridine. It was stirred at room temperature overnight and then the solvent was removed in vacuo, leaving a light green paste. The paste was dissolved in a minimum quantity of acetone and then triturated with ethyl acetate and placed in the freezer overnight. Glassy needles formed and were filtered and washed with ethyl acetate to yield 3.0 g of pure product (30%), m.p. 134°-135° C.

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