反应详情

温度

-70 °C

2-Chloroaniline 5.2 g (26.0 mmol) was dissolved in dichloromethane (200 ml) and the solution was cooled to −70° C. To the cooled solution a dichloromethane (10 ml) solution of tert-butyl hypochlorite 2.82 g (26.0 mmol) was added dropwise and the solution was stirred at −70° C. for 10 minutes. To the obtained reaction solution a dichloromethane (20 ml) solution of 2-methylthiomethyl-4,6-dimethoxypyrimidine 3.38 g (26.0 mmol) was added dropwise and the solution was stirred at −70° C. for 40 minutes. To the obtained reaction solution 28% sodium methoxide methanol solution (9 ml) was added and the solution was stirred until it came to room temperature. Water was added to the reaction solution and the organic layer was separated. The water layer was further extracted twice with dichloromethane. After the organic layer had been washed with water and dried, dichloromethane was distilled off under reduced pressure and the objective 2-chloro-6-[1-(4,6-dimethoxypyrimidin-2-yl)-1-methylthiomethyl]aniline 7.00 g (yield 83%) was obtained as oily substance from the obtained oily substance by column chromatography using 1:8 mixed solvent of ethyl acetate and hexane as eluent.

1. additionwas added dropwise
2. stirringthe solution was stirred at −70° C. for 40 minutes
3. additionwas added
4. stirringthe solution was stirred until it
5. customcame to room temperature
6. customthe organic layer was separated
7. extractionThe water layer was further extracted twice with dichloromethane
8. washAfter the organic layer had been washed with water
9. customdried
10. distillationdichloromethane was distilled off under reduced pressure