[CH3:1][C:2]1([CH:15]([CH3:17])[CH3:16])[CH2:10][C:9]2[C:4](=[C:5]([Cl:13])[C:6]([Cl:12])=[C:7]([OH:11])[CH:8]=2)[CH:3]1[OH:14].C(=O)([O-])[O-].[K+].[K+].Br[CH2:25][C:26]([O:28]CC)=[O:27].[OH-].[Na+]>CN(C)C=O>[OH:14][CH:3]1[C:4]2[C:9](=[CH:8][C:7]([O:11][CH2:25][C:26]([OH:28])=[O:27])=[C:6]([Cl:12])[C:5]=2[Cl:13])[CH2:10][C:2]1([CH:15]([CH3:17])[CH3:16])[CH3:1](1-Hydroxy-2-isopropyl-2-methyl-6,7-dichloro-5-indanyloxy)acetic acid is prepared following substantially the same procedure described in Example 4, Step F, using the following substances: 2-methyl-2-isopropyl-6,7-dichloro-1,5-indandiol (8.3 g., .03 mole); potassium carbonate (7.2 g.); ethyl bromoacetate (6.2 ml.); and dimethylformamide (70 ml.); and hydrolyzing the resultant ester with aqueous sodium hydroxide in accordance with Example 4, Step F, gives (1-hydroxy-2-isopropyl-2-methyl-6,7-dichloro-5-indanyloxy)acetic acid.
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