Cleavage of 2-acetyl-2-phenylazopropionanilide and related compounds by boron trifluoride. New Japp–Klingemann reactions
作者:G. C. Barrett、M. M. El-abadelah、M. K. Hargreaves
DOI:10.1039/j39700001986
日期:——
2-Acetyl, 2-cyano-, and 2-nitro-2-phenylazopropionic acid derivatives suffer cleavage of the phenylazo-grouping on treatment with borontrifluoride, giving benzenediazonium tetrafluoroborate and the corresponding difluoroboron propionic acid derivative; 2-cyano- or 2-nitro-2-phenylazoisobutyronitrile and the corresponding amides behave similarly, but 1-phenylazo-2-naphthol gives a difluoroboron salt, and