反应详情

Using general procedure F {(3S,4S)-3-[(5-chloro-thiophene-2-carbonyl)-amino]-4-methoxy-pyrrolidin-1-yl}-acetic acid ethyl ester (example 25.2) was reacted with 1-(4-amino-3-fluoro-phenyl)-1H-pyrazin-2-one (prepared from 2-fluoro-4-iodoaniline by reaction with 1H-pyrazin-2-one, Cu(I)I, N,N′-dimethylethylenediamine and cesium carbonate in dioxane at 120° C.) to give 5-chloro-thiophene-2-carboxylic acid ((3S,4S)-1-{[2-fluoro-4-(2-oxo-pyrazin-1-yl)-phenylcarbamoyl]-methyl}-4-methoxy-pyrrolidin-3-yl)-amide. Yellow solid. MS 506.3 ([M+H]+)