[OH:1][C:2]1[CH:16]=[CH:15][C:5]([C:6]([C:8]2[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][CH:9]=2)=[O:7])=[CH:4][CH:3]=1.[C:17](Cl)(=[O:22])[C:18]([CH3:21])([CH3:20])[CH3:19]>N1C=CC=CC=1>[C:17]([O:1][C:2]1[CH:16]=[CH:15][C:5]([C:6]([C:8]2[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][CH:9]=2)=[O:7])=[CH:4][CH:3]=1)(=[O:22])[C:18]([CH3:21])([CH3:20])[CH3:19]2.16 g (0.01 mole) of 4-hydroxy-4'-chlorobenzophenone and 1.2 g (0.015 mole) of pivaloyl chloride in solution were warmed to 50° C. for 3 hrs in 60 mls of dry pyridine with a drying tube attached. The solvent was removed via rotary evaporator and H2O added. The product was filtered and recrystallized from ethanol; 2.3 g (73%) yield; M.P.~113°-114° C.
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