Ethanol → HCID 20827833, compound

Participants

Reaction Steps

A solution of 2-(tert-butoxycarbonylaminooxy)acetic acid (87a, 1 g, 5.23 mmol) in anhydrous THF was chilled in an ice bath and N-methylmorpholine (863 μL, 7.85 mmol) and isobutyl chloroformate (746 μL, 5.75 mmol) were added sequentially. The mixture was stirred under an N2 atmosphere for 20 min. A 33 wt % solution of methanamine in ethanol (1.3 mL, 10.46 mmol) was added to the reaction which was subsequently allowed to warm to room temperature with stirring overnight. The THF was removed in vacuo and the residue was partitioned between ethyl acetate and water. The organic phase was washed with H2O×2 and dried over anhydrous Na2SO4. The ethyl acetate was removed in vacuo to yield tert-butyl 2-(methylamino)-2-oxoethoxycarbamate (87b, 775 mg, 3.80 mmol).

Provenance & Evidence