Triethylamine → 1-(4,5-Dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-2-yl)-5,5-dimethyl-imidazolidine-2,4-dione

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Reaction Steps

A mixture of 49 mg (0.12 mmol) of 1-(8-Bromo-4,5-dihydrothiazolo[4,5-d]benzo[b]oxepin-2-yl)-5,5-dimethylimidazolidin-2,4-dione from Example 485, and 0.0334 ml (0.24 mmol) of triethylamine in 5 ml of ethanol was hydrogenated over 120 mg of 10% palladium on charcoal at 1 atm for 3 hours. The mixture was filtered through celite and concentrated in vacuum. The residue was purified on 4 g siligal column eluting the product with ethyl acetate gradient in heptane to give 493. Yield 20 mg (51%). MS(ESI+): 330.1

Provenance & Evidence