Yagupol'skii, L. M.; Kondratenko, N. V.; Sambur, V. P.
Synyhesis, 1975 , p. 721 - 723
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Gmelin Handbook: F: PerFHalOrg.SVol.2, 6.2.1.6.10, page 251 - 267
in hydrogen fluoride; hydrogen bromide Diazotation with NaNO2 in 20 percent aq. HF at - 20 °C (0.5 h). Cleavage by dropwise addn. of CuBr in 48 percent aq. HBr at -20 to -25 °C (0.5 h).;
