Chlorobenzene → HCID 22417752, compound

Participants

Reaction Steps

A mixture of 25 g (0.15 mol) of 2-methyl-3-nitrobenzyl alcohol and 25 ml (0.22 mol) of tintetrachloride in 250 ml of chlorobenzene is refluxed for 3 hours with stirring. After cooling 50 ml of N-methylpiperazine is slowly instilled. The precipitate is suctioned off and washed several times with ethyl acetate. The combined filtrates are dried on sodium sulfate and concentrated by evaporation and the temperature must not rise above 160° C. The residue (39 g) with a mixture of 33 parts of cyclohexane and 1 part of ethyl acetate is subjected twice to a pressure column chromatography. Thus 9.3 g (24%) of 2-(2-chlorobenzyl)-6-nitrotoluene, melting point 54°-56° C., and 16 g (41%) of 2-(4-chlorobenzyl)-6-nitrotoluene, melting point 62°-63° C. are obtained.

Provenance & Evidence