Ethyl Acetate → HCID 90018918, compound

Participants

Reaction Conditions

Reaction Steps

A 1000 ml round-bottomed flask, equipped with a magnetic stirrer, was filled with 362 ml of tert-butyl alcohol, 362 ml of water, K3Fe(CN)6 (135.53 g, 411.63 mmol), K2CO3 (56.89 g, 411.63 mmol), (DHQ)2PHAL (1.06 g, 1.37 mmol), K2OsO2(OH)4, (0.1 g, 0.27 mmol), and Methanesulfonamide (13.05 g, 137.21 mmol) and stirred at 0° C. (E)-Methyl-3-(2-chlorophenyl)acrylate (26.98 g, Preparation example 24) was added at once, and the mixture was stirred vigorously at 0° C. overnight. While the mixture was stirred at 0° C., solid sodium sulfite (Na2SO3, 24.4 g, 193.5 mmol), EtOAc and water was added and the mixture was allowed to warm to room temperature and stirred. After the separation of the layer, the aqueous layer was added to EtoAc, and the aqueous layer was separated. The combined organic layers were washed with 0.3M H2SO4/Na2SO4 solution (H2SO4 76 ml, H2O 2 L, Na2SO4 360 g) twice. After separation of the organic layer, the organic layer was washed with H2O. After separating of the layer, the organic layer were dried over anhydrous MgSO4, filtered and concentrated under vacuum. The crude compound was purified by a silica gel column to produce the title compound (24.42 g, 7090%)

Provenance & Evidence