Methanol → methyl (3R)-3,4-dihydroxybutanoate

Temperatur

20 °C

To a solution of (R)-dimethyl 2-hydroxysuccinate (140 g, 0.86 mol) in THF (1400 mL) was added dropwise Me2S.BH3 (86 mL, 10 M) at 20° C. over 30 min. The mixture was stirred at 20° C. for 30 min. NaBH4 (1.63 g, 42.9 mmol) was added at 10° C. and stirred at 10° C. for 30 min. The mixture was warmed to room temperature and stirred for 1 h. CH3OH (200 mL) was slowly added to the mixture while cooling in an ice-water bath. The resulting mixture was evaporated to give (R)-methyl 3,4-dihydroxybutanoate (130 g, crude).

1. stirringstirred at 10° C. for 30 min
2. temperatureThe mixture was warmed to room temperature
3. stirringstirred for 1 h
4. temperaturewhile cooling in an ice-water bath
5. customThe resulting mixture was evaporated

ORD-Eintrag

ord-ef0788dbe15f4a0cbb58ed1097635972

Quelldatensatz

uspto-grants-2011_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07999113B2