反应详情

温度

100 °C

33 parts by weight of 2-nitrobenzoic acid, 40 parts by weight of 30% strength sodium methylate solution and 440 parts by weight of dimethylsulfoxide are stirred for 2 hours at 100° C. Thereafter, 49 parts by weight of 3,7-dichloro-8-chloromethylquinoline are introduced and the reaction mixture is stirred for a further 2 hours at 100° C. The solution is then cooled, water is added and the precipitated solid is filtered off under suction and recrystallized from toluene. 69 parts by weight (92% of theory) of 3,7-dichloro-8-[(2-nitrophenyl)-carbonyloxymethyl]-quinoline of melting point 152° C. are obtained.

1. temperatureThe solution is then cooled
2. filtrationthe precipitated solid is filtered off under suction
3. customrecrystallized from toluene