Water → HCID 10602221, compound

Participants

Reaction Steps

To a suspension of 55% sodium hydride in 103 mL of dimethylformamide, cooled with an ice bath, was added dropwise 13 g (25.3 mmol) of the compound obtained in example 59 dissolved in 51 mL of dimethylformamide, followed by 4.6 mL (75.9 mmol) of methyl iodide. After the addition was complete, the reaction mixture was stirred at room temperature overnight. Then, water was added and the solvent was removed. The residue was taken up in ethyl acetate and washed with brine. The organic phase was dried and the solvent was removed to yield 13 g of a crude product. This was chromatographed on silica gel (ethyl acetate-hexane mixtures of increasing polarity) to afford 10.2 g of the title compound of the example (yield: 76%).

Provenance & Evidence