Ethyl 4-Amino-2-fluorobenzoate → HCID 68694892, compound

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Reaction Steps

2-Fluoro-4-{[1-(3-fluoro-benzenesulfonyl)-1,2,3,4-tetrahydro-quinoline-7-carbonyl]-amino}-benzoic acid, m/z (ES+): 473.24 (M+H+.), was prepared in analogy to example 40, steps 1 to 5. Step 2 was performed using 4-amino-2-fluorobenzoic acid ethyl ester and yielded 2-fluoro-4-[(quinoline-7-carbonyl)-amino]-benzoic acid ethyl ester, which was reduced to 2-fluoro-4-[(1,2,3,4-tetrahydro-quinoline-7-carbonyl)-amino]-benzoic acid ethyl ester in step 3. Step 4 was performed using 3-fluoro-benzenesulfonyl chloride, yielding 2-fluoro-4-{[1-(3-fluoro-benzenesulfonyl)-1,2,3,4-tetrahydro-quinoline-7-carbonyl]-amino}-benzoic acid ethyl ester, which was hydrolyzed in step 5.

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