Tetrafluoroboric acid → HCID 21406771, compound

Participants

Reaction Steps

4-Acetyl-2-amino-2',4'-difluorobiphenyl prepared as described in Example 1 was subjected to the Schiemann reaction using fluoboric acid to give 4-acetyl-2,2',4'-trifluorobiphenyl, m.p. 92°-94° C. By a similar method, starting from the appropriate products of Example 1, there were obtained 4-acetyl-4'-chloro-2,2'-difluorobiphenyl, m.p. 69°-70° C. and 4-acetyl-4'-bromo-2,2'-difluorobiphenyl, m.p. 75°-76° C.

Provenance & Evidence