several reaction conditions (Table I) gave a mixture of the threo and erythro 0-(trimethylsily1) cyanohydrins 4 and 5, which could not be separated. This mixture was directly transformed into the corresponding 2-hydroxy esters 6 and 7 by treatment with dry methanolic hydrogen chloride (3: l EbO/MeOH, saturated with HCl, 0" C, 24 h), followed by in situ hydrolysis (< lo" C, 24-48 h) 15 of the imidate hydrochloride intermediate. The methyl esters 6 and 7 were ...
![Benzyl [(2R)-1-oxo-3-phenyl-2-propanyl]carbamate Structure](https://image.chemsrc.com/caspic/297/63219-70-5.png)
