Water → 4,5-Dihydro-3-(3-methyl-5-isoxazolyl)-4-oxo-imidazo[1,5-a]quinoxaline

Participants

Reaction Steps

A stirred suspension of 5-tert-butyl-4,5-dihydro-3-(3methyl-5isoxazolyl)-4oxo-imidazo[1,5-a]quinoxaline (0.65 g) in a mixture of ethanol (10 ml) and 4 M hydrochloric acid (1 ml) was refluxed for 10 min. Then the mixture was cooled to room temperature and water (10 ml) was added. The precipitated product was collected by filtration and dried to give the title compound as a white solid, m.p. 393° C. (Compound 18).

Provenance & Evidence