4-Nitrobenzaldehyde → 1-(dichloromethyl)-4-nitrobenzene

Participants

Reaction Steps

151 g (1 mol) of p-nitrobenzaldehyde and 5 g (0.018 mol) of triphenylphosphine oxide are treated, in the tube reactor described above, at a temperature of 120° to 140° C, for 6 hours with 80 g (0.8 mol) of phosgene gas per hour. At the end of the reaction time the increased in weight was 53 g (calculated 55 g). Vacuum distillation of the resulting crude product gave, in a boiling range of 100° to 110° C/1.5 mm Hg, 177 g (86% of theory) of p-nitrobenzal chloride with a melting point of 44° to 46° C.

Provenance & Evidence