Sodium Carbonate → HCID 69118652, compound

Participants

Reaction Steps

To the product from Step c dissolved in THF (20 mL) was added 1-isopropylpiperidin-4-amine (0.5 mL, excess) followed by the addition of sodium triacetoxyborohydride (0.85 g, 4.02 mmol). The mixture was stirred at rt. over night. Into the same pot mixture were added water (6.0 mL), sodium carbonate (0.5 g), and CBZCl (0.5 mL). The mixture was stirred at rt. for 2 hr. The mixture was extracted with ethyl acetate. Organic phase was washed with sodium bicarbonate and brine and dried over sodium sulfate. The product, (S)-tert-butyl 4-((R)-4-(benzyloxycarbonyl)butan-2-yl)-2,2-dimethyloxazolidine-3-carboxylate, was obtained after reverse phase HPLC purification (acetonitrile/water 30% to 100% gradient). LC-MS found: (M+1)+=532.47.

Provenance & Evidence