Ethyl Acetate → 8-(1-Allyl-cyclopropanesulfonylamino)-7-(2-fluoro-4-iodo-phenylamino)-6-methyl-5-oxo-2,3-dihydro-5H-imidazo[1,2-a]pyridine-1-carboxylic acid tert-butyl ester

Participants

Reaction Steps

1-Allyl-cyclopropanesulfonyl chloride (259 mg, 0.001 mol) was added to a stirred solution of 8-amino-7-(2-fluoro-4-iodo-phenylamino)-6-methyl-5-oxo-2,3-dihydro-5H-imidazo[1,2-a]pyridine-1-carboxylic acid tert-butyl ester (350 mg, 0.001 mol) in pyridine (3 mL). The resulting mixture was stirred at room temperature for 12 hours. The reaction was monitored by TLC (100% ethylacetate). The reaction mixture was concentrated and partitioned between ethylacetate and water. The organic layer concentrated to afford the crude product. Purification by column chromatography on silica gel (75% ethylacetate in hexane) afforded 125 mg of the product (27.7% yield).

Provenance & Evidence