1,4-Dibromo-2-nitrobenzene → HCID 21535988, compound

Participants

Reaction Steps

2,5-Dibromo-1-nitrobenzene and 2,4-difluoro-1-iodobenzene were reacted under Ullmann conditions to give 4-bromo-2',4'-difluoro-2-nitrobiphenyl, b.p. 126°-136°C./0.2mm (m.p. 52°-53°C. after recrystallisation from methanol). This was reduced to give 2-amino-4-bromo-2',4'-difluorobiphenyl, b.p. 120°-124°C./0.5mm, which was subjected to a Schiemann reaction, using hydrofluoroboric acid to give the product, m.p. 67°-69°C., after distillation.

Provenance & Evidence