[F:1][C:2]1[C:9]([F:10])=[C:8]([F:11])[C:7]([F:12])=[C:6]([F:13])[C:3]=1[CH:4]=[O:5].C[C:15](=[O:19])[O:16]CC>>[F:1][C:2]1[C:9]([F:10])=[C:8]([F:11])[C:7]([F:12])=[C:6]([F:13])[C:3]=1[CH:4]([OH:5])[C:15]([OH:19])=[O:16]The 2,3,4,5,6-pentafluorobenzaldehyde (49.4 g, 252 mmol) was converted to product in a manner substantially analogous to Preparation 59 to yield 52.3 g. (86.0). EA, MS(FD).
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