Diethanolamine → HCID 23498447、化合物

To a 0° C. solution of diethanolamine (1.9 ml, 20 mmol) in 50 ml of THF was added benzyloxycarbonyloxysuccinimide (5.0 g, 20 mmol) followed by the slow addition of a solution of sodium carbonate (3.2 g, 30 mmol) in 50 ml of water. The reaction was stirred at 0° C. for 2 hours, diluted with 50 ml of water, and the majority of the THF was removed under vacuum. The reaction mixture was extracted with ethyl acetate (2×75 ml), washed with brine and dried over sodium sulfate. The solvent was concentrated and the residue was purified by SiO2 chromatography (250 g SiO2, 8% MeOH/methylene chloride) to give N-Cbz-diethanolamine (4.25 g) as a clear oil.

1. customthe majority of the THF was removed under vacuum
2. extractionThe reaction mixture was extracted with ethyl acetate (2×75 ml)
3. washwashed with brine
4. dry with materialdried over sodium sulfate
5. concentrationThe solvent was concentrated
6. customthe residue was purified by SiO2 chromatography (250 g SiO2, 8% MeOH/methylene chloride)

ORDレコード

ord-57a446727e0c43c6b1b81bf7201da705

出典データセット

uspto-grants-2004_07

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US06759428B2