[OH:1][C:2]1[CH:3]=[C:4]([CH:8]=[C:9]([C:11]([F:14])([F:13])[F:12])[CH:10]=1)[C:5]([OH:7])=[O:6].[CH3:15]I.C[O-].[Na+]>CO>[CH3:15][O:1][C:2]1[CH:3]=[C:4]([CH:8]=[C:9]([C:11]([F:12])([F:13])[F:14])[CH:10]=1)[C:5]([OH:7])=[O:6]This product is prepared according to the procedure of Example 5 and comprises contacting 3-hydroxy-5-trifluoromethylbenzoic acid with methyl iodide in methanol containing sodium methoxide as the base, m.p. 131°-135° C.
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