反应详情

1.45 liters of 1N sodium hydroxide solution are added to a solution, cooled to 5° C., of 1.45 ml of methyl 1,1-cyclopropanedicarboxylate in 2.5 liters of methanol. After stirring for 4 days at ambient temperature, the mixture is three-quarters concentrated, extracted with ether and then treated in customary manner, allowing the expected product to be isolated.

1. concentrationconcentrated
2. extractionextracted with ether
3. additiontreated in customary manner
4. customto be isolated