Sodium Bicarbonate → HCID 67315296, compound

Participants

Reaction Steps

Sodium bicarbonate (1.5 eq) was added to a suspension of (S)-2-amino-4-tert-butoxy-4-oxobutanoic acid (5.1 mmol, 1.2 eq) in dioxane/water (1:1, 20 ml) and the mixture was stirred for 30 min at room temperature. A solution of 4-methoxy-2,6-dimethylbenzenesulfonic acid chloride (4.3 mmol, 1.0 eq) in dioxane (10 ml) was added and the reaction mixture stirred for 16 h at room temperature. On completion of the reaction the organic solvent was removed under vacuum and the aqueous phase acidified with 10% HCl (eq). Extraction was then performed with DCM and the organic phase was washed with saturated sodium chloride solution, dried (Na2SO4) and concentrated to small volume under vacuum. Yield: 45%.

Provenance & Evidence