Sodium Sulfite → HCID 67248533, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of the product of Step 1 (3.84 g, 8.54 mmol) in dimethylformamide (33.5 mL) was added N-bromosuccinimide (1.75 g, 9.82 mmol) and the solution stirred at 55° C. for 3 hours. A solution of sodium sulfite (0.538 g, 4.27 mmol) in water (60 mL) was added dropwise to the reaction. The mixture was diluted with ethyl acetate (100 mL) and washed the organic extract with water (2×100 mL). The combined aqueous layers were back extracted with ethyl acetate (3×100 mL) and the combined organic extracts were dried over MgSO4, filtered and concentrated in vacuo. Purification by flash chromatography provided a solid, which was triturated with hexanes, to give 4-(5-bromo-thiazol-2-yl)-4-hydroxy-2,5-dimethyl-cyclohexanecarboxylic acid ethyl ester (1.07 g, 2.95 mmol). MS ESI: [M]+ m/z 362.1.

Provenance & Evidence