Aromatic Amines in Organic Synthesis of Diazotization;

The preparation D-phenylalanine from N-carbamoyl-D-phenylalanine by diazotization;

Theoretical study of reaction mechanism of diazotization of 4-amino-5-nitro-1,3-difluorinbenzene;

First, 5-nitro-1 and 4-naphthoquinone are prepared through nitration and oxidization of naphthalene, and then through reduction of nitro into amide, diazotisation of the amide and hydro-lytic action of diazo salt, the juglone is made.

Methoxystilbene and 2-methoxy-4'-nitrostilbene were synthesized from benzyl chloride and nitrobenzyl chloride by the Wittig reaction, and used as intermediates for the synthesis of the final product fluorescent whitener FP(4,4'-bis(2-methoxystyryl)biphenyl) via reduction and diazotisation of the latter followed by reaction with the former in the presence of NaOH.

The title compound was prepared from \%o\%aminophenol and \%m\%phenylenediamine by diazotisation, coupling reaction and closure, yield was 80 %.

By synthetic process as compared with reaction mechanism, we probe into the process to synthesize m-bromoanisole by m-aminophenol as raw material via diazonium, Sandmeyer reaction, aci-dolysis, and etherifying reaction, and analyze its parameters of the process.