2-Nitrotoluene → Benzaldehyde

Beteiligte Stoffe

Reaktionsschritte

At 60° C., a solution of 12.0 g (0.03 mol) of tetrakis(diethylamino)phosphonium bromide in 12 g of N-methylpyrrolidone (NMP), 174.3 g (3 mol) of potassium fluoride, 4.1 g (0.03 mol) of nitrotoluene and 18 ml of xylene are successively added to 421.7 g (3 mol) of 4-chlorobenzaldehyde (4-CBAL). The reaction mixture is dried by azeotropic distillation of the xylene under reduced pressure. After 24 hours at 1 90° C., the formation of 4-fluorobenzaldehyde (4-FBAL) and of benzaldehyde produced by dehalogenation, and the conversion of the reaction are determined by gas chromatography.

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