Sodium hydride → 1-(4-Methylpyridin-3-yl)imidazolidin-2-one

関与物質

反応手順

1-(2-Chloro-ethyl)-3-(4-methyl-pyridin-3-yl)-urea (I-14a: 8.5 g, 39.96 mmol) in dry DMF (150 mL) was added to a stirred mixture of sodium hydride (2.87 g, 59.94 mmol) in THF (150 mL) at 0° C. The reaction temperature was maintained at room temperature for 30 minutes. The reaction was monitored by TLC. The reaction mixture was quenched with MeOH at 0° C., concentrated under reduced pressure and partitioned between ice water and chloroform. The organic layer was dried over Na2SO4, and concentrated under reduced pressure to afford 6.5 g (91% yield) of 1-(4-methyl-pyridin-3-yl)-imidazolidin-2-one.

情報源と証拠