Sodium Bicarbonate → HCID 117777373, compound

Participants

Reaction Steps

Et3BHLi (134 mL, 134 mmol, 1M in THF) was added slowly to a mixture of 137c (35 g, 112 mmol) in THF (1 L) at −78° C. and stirred for 2 h. See FIG. 1. Saturated aqueous sodium bicarbonate solution (500 mL) was added, stirred for 30 min, then extracted with DCM (1 L×3). The combined organic extracts were washed with brine (1 L×3), dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure to give di-tert-butyl 5-hydroxy-4,4-dimethylpyrrolidine-1,2-dicarboxylate 137d as a colorless oil (38 g, crude).

Provenance & Evidence