反应详情

A 0° C. solution of 1-(tert-butyl)-3-(2-chloroethyl)urea (2.00 g, 11.19 mmol) in THF (20 mL) was treated with NaH (60% in mineral oil, 0.800 g, 33.3 mmol), stirred at RT for 1 h, then heated at 65° C. overnight. The mixture was cooled to RT, concentrated to dryness, treated with satd. NH4Cl, extracted with EtOAc (3×) and the combined organics were dried over Na2SO4 and concentrated to dryness to afford 1-(tert-butyl)imidazolidin-2-one (1.19 g, 75%). MS (ESI) m/z: 143.1 (M+H+).

1. temperatureheated at 65° C. overnight
2. temperatureThe mixture was cooled to RT
3. concentrationconcentrated to dryness
4. additiontreated with satd
5. extractionNH4Cl, extracted with EtOAc (3×)
6. dry with materialthe combined organics were dried over Na2SO4
7. concentrationconcentrated to dryness