2,5-Bis(2,2,2-trifluoroethoxy)benzene-1-sulfonyl chloride → (2S)-1-[1-{[2,5-bis (2,2,2-trifluoroethoxy)phenyl]sulfonyl}-5-chloro-3-(2-methoxyphenyl)-2-oxo-2,3-dihydro-1H-in dol-3-yl]-N,N-dimethylpiperidine-2-carboxamide

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With 200 mg of (2S)-1-[5-chloro-3-(2-methoxyphenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-N,N-dimethylpiperidine-2-carboxamide, which is the compound described in Preparation 3.49 (Isomer B) of the brochure No. WO01/98295, and 183 mg of 2,5-bis(2,2,2-trifluoroethoxy)benzene sulfonyl chloride as starting materials, 238 mg of the title compound (colorless amorphous) was obtained by a similar method to Example 2.

Provenance & Evidence