Potassium Carbonate → HCID 57678392, compound

Participants

Reaction Steps

To a suspension of 1,3-dioxo-2,8-diaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester (1.0 g, 3.7 mmol) in DMF (12 ml), 2-(2-bromoethoxy)-tetrahydro-2H-pyrane (0.62 ml, 4.1 mmol) and potassium carbonate (0.62 g, 4.5 mmol) are added at ambient temperature and the mixture is stirred for overnight at room temperature. The reaction mixture is quenched with water and extracted with ethyl acetate. The combined extracts are washed with brine and dried over sodium sulfate, filtrated. The solvent is evaporated down to give 1.6 g of crude 1,3-dioxo-2-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-2,8-diaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester.

Provenance & Evidence