反应详情

4-(Methanesulfonyloxy)pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (1.972 g) was dissolved in tetrahydrofuran (40 ml), and lithium borohydride (300 mg) was added thereto. The reaction mixture was stirred at room temperature overnight, additional lithium borohydride (1000 mg) was added, and the mixture was stirred at room temperature for 2 hours. 1 N Hydrochloric acid was added to the reaction solution, and then was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate, filtered, and the filtrate was concentrated under reduced pressure to give 1.715 g of the title compound.

1. stirringthe mixture was stirred at room temperature for 2 hours
2. extractionwas extracted with ethyl acetate
3. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
4. filtrationfiltered
5. concentrationthe filtrate was concentrated under reduced pressure