Potassium Carbonate → HCID 68898027, compound

Participants

Reaction Conditions

Reaction Steps

To 1.30 g (4.6 mmol) of 3C was added 40 ml of anhydrous DMF followed by 2.5 g (18 mmol) of anhydrous K2CO3, 2.5 g of 3 A° molecular sieves and 2.3 mL (17.7 mmol) of ethyldibromoacetate. The reaction mixture was heated at 120° C. for 3 hours under argon atmosphere and concentrated under reduced pressure. To the residue 100 mL of water and 75 mL of ethyl acetate were added and filtered. The filtrate was transferred to a separatory funnel and the organic layer was separated. The aqueous layer was extracted with 4×50 mL of ethyl acetate. All the organic layers were combined, dried (Na2SO4) and concentrated. The residue was purified by silica gel column chromatography using 20% ethyl acetate in hexane to give 413 mg (1.17 mmol, 26%) of 3D as a colorless gum (M+Na, 374).

Provenance & Evidence