2,5-Difluorobenzenesulfonyl chloride → HCID 66789082, compound

Participants

Reaction Steps

4-{[4-(2,5-Difluoro-benzenesulfonyl)-3,4-dihydro-2H-benzo[1,4]oxazine-6-carbonyl]-amino}-2-fluoro-benzoic acid, MS (ISP): m/e=491.1 (M−H), was prepared as described for example 21, steps 1 to 8. Step 7 was performed using 2,5-difluoro-benzenesulfonyl chloride and yielded 4-{[4-(2,5-difluoro-benzenesulfonyl)-3,4-dihydro-2H-benzo[1,4]oxazine-6-carbonyl]-amino}-2-fluoro-benzoic acid ethyl ester, which was hydrolyzed in step 8.

Provenance & Evidence