Merck + Co., Inc.

Warren K Russ, Jr

George G Hazen

Earl M Chamberlin

Process for preparing (1-oxo-2-phenyl, halophenyl or thienyl-2-methyl-6,7-dichloro-5-indanyloxy)acetic acid, pharmaceutically acceptable salt, ester and amide derivatives thereof and intermediate 5-ether derivatives thereof comprising reacting under Friedel-Crafts conditions a 2-phenyl, halophenyl or thienyl-2-propionyl halide or an anhydride thereof with an ether derivative of 2,3-dichlorophenyl; and reacting the resulting propiophenone with formaldehyde in the presence of acid to yield the desired indanone.

Process for preparing (1-oxo-2-phenyl, halophenyl or

Process for preparing [1-oxo-2-cyclopentyl(or 2-isopropyl)-2-methyl-6,7-dichloro-5-indanyloxy]acetic acid, pharmaceutically acceptable salt, ester and amide derivatives thereof and intermediate 5-ether derivatives thereof comprising reacting under Friedel-Crafts conditions a 2-cyclopropyl-or 2-isopropylpropionyl halide or an anhydride thereof with an ether derivative of 2,3-dichlorophenol; and reacting the resulting propiophenone with formaldehyde in the presence of acid to yield the desired indanone.

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Piscataway, NJ, United States of America

Warren K Russ, Jr