反应详情

Next, 6 N hydrochloric acid (96.8 ml, 581 mmol) was added to diethyl 2-methyl-2-(4-pyridylmethyl)malonate (17.2 g, 64.6 mmol), and the mixture was refluxed overnight. The reaction mixture was allowed to stand, then washed with hexane (100 ml) to remove sodium hydride oil contained in diethyl 2-methyl-2-(4-pyridylmethyl)malonate and concentrated under reduced pressure. The resulting crystals were filtered off with ethyl acetate to give 2-methyl-3-(4-pyridyl)propionic acid (10.7 g, 82%) as pale pink crystals.

1. temperaturethe mixture was refluxed overnight
2. washwashed with hexane (100 ml)
3. customto remove sodium hydride oil
4. concentrationconcentrated under reduced pressure
5. filtrationThe resulting crystals were filtered off with ethyl acetate