5-Amino-2-oxindole → 2-Oxo-N-(2-oxo-2,3-dihydro-1H-indol-5-yl)-2-(4-phenoxy-piperidin-1-yl)-acetamide

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Reaction Steps

The title compound is prepared from oxo-(4-phenoxy-piperidin-1-yl)-acetic acid and 5-amino-1,3-dihydro-indol-2-one according to the method described in Example 2. The filtered crystals are purified by column chromatography using Kieselgel 60 (Merck) as adsorbent and toluene:methanol=4:1 as eluent. Melting Point: 78-81° C. (diethyl ether)

Provenance & Evidence