2,2-Dimethyl-1,3-dioxane-4,6-dione → HCID 57654652, compound

Participants

Reaction Steps

1-tert-Butoxycarbonylamino-cyclobutanecarboxylic acid (1.0 g, 4.6 mmol) and Meldrum's acid (2,2-dimethyl-[1,3]dioxane-4,6-dione, 0.74 g, 5.1 mmol) are dissolved in 20 ml dichloromethane. 4-Dimethylaminopyridin (0.88 g, 7.2 mmol) and EDCl (1.07 g, 5.6 mmol) are added and the mixture is left in a refrigerator (4° C.) overnight. The reaction mixture is diluted with additional 200 ml dichloromethane and washed twice with 0.1 N HCl and with brine. Drying of the organic phase and evaporation of the solvent delivered the crude title compound which is used in the subsequent step without further purification.

Provenance & Evidence