反应详情

温度

145 °C

3-chloroquinoxalin-2-amine (1.8 g, 10 mmol) and 3,5-dimethoxyaniline (4.6 g, 30 mmol, commercially available from Aldrich) are taken up in NMP (4.5 ml) and heated to 145° C. in the sealed tube for 3 h under N2. When TLC confirms the total consumption of the starting material, the reaction is cooled to rt and treated with EtOAc (4 ml). The first crop of solid is filtered followed by the 2nd crop. The first is recrystallised from CHCl3: EtOAc and the 2nd crop is washed with EtOAc, to afford 1.8 g (60%) of pure title compound. LC/MS: (ES+): 297.1, (ES−): 295.1.

1. customthe total consumption of the starting material
2. temperaturethe reaction is cooled to rt
3. additiontreated with EtOAc (4 ml)
4. filtrationThe first crop of solid is filtered
5. customThe first is recrystallised from CHCl3
6. washEtOAc and the 2nd crop is washed with EtOAc