TiCl2(OPri)2; (2R,3R)-TADDOL in toluene T=-78°C; 20 h; Title compound not separated from byproducts;

acetate buffer in diethyl ether T=23°C; 18 h; oxynitrilase; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

anhydrous trisodium citrate; citric acid T=0 - 5°C; 1 h; (S)-hydroxynitrile lyase from Hevea brasiliensis;

lipase PS-30 in diethyl ether T=15°C; 20 h; Enzymatic reaction; optical yield given as percent eeenantioselective reaction;

1: phenylacetaldehyde With (1R,2R)-cyclohexane-1,2-diylbis(2-azaethenyl-3-tert-butyl-2-hydroxybenzo-5-sulfonic acid) disodium salt; Manganese (II) acetate in methanol T=20°C; 0.5 h; 2: sodium cyanide in methanol T=20°C; 24 h; optical yield given as percent ee;