Br[C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[CH:4][CH:3]=1.[O:9]1[C:13]2([CH2:18][CH2:17][C:16](=[O:19])[CH2:15][CH2:14]2)[O:12][CH2:11][CH2:10]1>>[Cl:8][C:5]1[CH:6]=[CH:7][C:2]([C:16]2([OH:19])[CH2:17][CH2:18][C:13]3([O:12][CH2:11][CH2:10][O:9]3)[CH2:14][CH2:15]2)=[CH:3][CH:4]=1The title compound was prepared as a white solid from 4-bromochlorobenzene (Aldrich) and 1,4-dioxa-spiro[4.5]decan-8-one using the procedure described in Step A of Example 1.
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