4-Chloroaniline → HCID 68547209, compound

Participants

Reaction Steps

In a 300 ml-flask were placed 4-chloroaniline (25.0 g, 196 mmol), methyl 3-oxopentanoate (28.1 g, 216 mmol) and toluene (100 ml). To this solution was added p-toluenesulfonic acid monohydrate (0.19 g, 0.98 mmol), and the resulting mixture was heated in a bath kept at 100° C. under a reduced pressure of 23 kPa for 2.5 hours, while removing the water formed by refluxing by using a Dean-Stark trap. The heating was then discontinued, nitrogen leaked in, and the reaction mixture cooled. The solvent was evaporated off by using a rotary evaporator, and the residue was distilled under reduced pressure to give 33.1 g of the title compound. The yield was 70.5%.

Provenance & Evidence