HCID 21715954, compound → HCID 86755326, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-aminobenzenebutyric acid 2,2-dimethylethyl ester IXb (2.0 g, 7.5 mmol) in dimethylacetamide (DMA 25 mL), was added 3,5 bis(acetylmethylamino)-2,4,6 triiodobenzoyl chloride X (1.98 g, 3 mmol), and the mixture stirred at 90-95° C. for 6 h. The solvent was removed in vacuo and the residue was dissolved in ethyl acetate (200 mL). The organic extract was washed with saturated sodium bicarbonate (250 mL), water and saturated sodium chloride and dried over sodium sulfate. The solvent was removed in vacuum and the residue purified by a silica gel column (150 g) using hexane/EtOAc to obtain the title compound XIb (1.98 g, yield 74%). (MS: m/e 858 (M-H)-.

Provenance & Evidence