[F:1][C:2]([F:20])([F:19])[C:3]1[C:8]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[C:7]([OH:14])[CH:6]=[C:5]([C:15]([F:18])([F:17])[F:16])[N:4]=1.[CH2:21](I)[CH3:22]>>[F:20][C:2]([F:19])([F:1])[C:3]1[C:8]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[C:7]([O:14][CH2:21][CH3:22])[CH:6]=[C:5]([C:15]([F:18])([F:17])[F:16])[N:4]=1This material was prepared following the procedure of Example 4 in 77% yield from product of Example 2 and ethyl iodide as a white solid; mp 57°-59° C.
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