Acetyl chloride → 3-(7-Acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid methyl ester

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Reaction Steps

3-(7-Acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid methyl ester was prepared by the procedure of example 20 from 3-(7-amino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid methyl ester (2.8 g, 7 mmol) and acetyl chloride (0.57 ml, 8 mmol) in THF (20 ml) to afford the title compound as white solid (2.5 g, 81%). The product was used in the next step without further purification.

Provenance & Evidence