反应详情

温度

70 °C

In a nitrogen atmosphere, add a solution of 4.8 g (0.02 mole) 2-(4-hydroxyphenoxy)quinoxaline in 30 cc dimethylfornmamide to 0.8 (0.02 mole) 57% sodium hydride. When the evolution of hydrogen ceases, add 4.8 g (0.021 mole) dimethyl 2-bromo-2-methylpropanedioate dropwise. When the addition is complete, heat at approximately 70° C. until the reaction is complete. Pour the mixture into ice-water and extract with ether. Concentration of the dry ethereal extracts yield the title compound.

1. additionWhen the addition
2. extractionextract with ether