反应详情

To a solution of 2.4 ml of 1,1,1,3,3,3-hexamethyldisilazane in 10 ml of dry tetrahydrofuran was added dropwise 6.4 ml of a 1.59M hexane solution of n-butyl lithium at -78° C. under a nitrogen atmosphere, followed by stirring at that temperature for 10 minutes. To the mixture was slowly added 0.976 ml of ethyl acetate, followed by stirring at -78° C. for 30 minutes. To the mixture was further added a solution of 2.00 g of 1-benzylisatin in 10 ml of dry tetrahydrofuran, followed by stirring at that temperature for 1 hour. Water was added to the reaction mixture, and the product was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate to give 2.23 g (81%) of the title compound.

1. stirringby stirring at -78° C. for 30 minutes
2. stirringby stirring at that temperature for 1 hour
3. extractionthe product was extracted with ethyl acetate
4. dry with materialThe organic layer was dried over anhydrous sodium sulfate