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A solution of 155.4 g of 2,4-dichloro-3-nitrophenol in 2 l of methylene chloride is treated with 16.9 g of benzyltrimethylammonium chloride. There is added thereto a solution of 44.8 g of sodium hydroxide in 1.8 l of water and, while stirring vigorously, 143 ml of dimethyl sulfate. After 1 hour, the organic phase is separated, washed with water, dried and evaporated in vacuo. There is obtained 2,4-dichloro-3-nitroanisole of melting point 97°-99° (hexane).

1. additionThere is added
2. customthe organic phase is separated
3. washwashed with water
4. customdried
5. customevaporated in vacuo