[C:1]1([CH2:7][CH:8]2[NH:14][C:13](=[O:15])[CH:12]=[CH:11][CH2:10][CH2:9]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.F[B-](F)(F)F.[CH3:21][O+](C)C>C(Cl)Cl>[CH3:21][O:15][C:13]1[CH:12]=[CH:11][CH2:10][CH2:9][CH:8]([CH2:7][C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[N:14]=1The product of Example 187 is reacted with one equivalent of trimethyloxonium tetrafluoroborate in CH2Cl2 by the method of Example 3 to produce the title material.
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