Water → HCID 67247723, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of the product of Step 1 (20 g, 74.3 mmol) in DMF (140 mL) was added NBS (15.9 g, 89 mmol). After the initial exotherm had subsided the reaction mixture was heated to 50° C. and stirred for 1 h. It was then cooled to room temperature and water (280 mL containing 7 g of sodium sulfite) was added followed by EtOAc. The layers were cut and the aqueous layer was back extracted with EtOAc (2×), and then the combined organics washed with H2O. The organic layer was dried with MgSO4, filtered and concentrated in vacuo. The crude residue was purified by flash chromatography to afford 4-(5-bromo-thiazol-2-yl)-4-hydroxy-2-methyl-cyclohexanecarboxylic acid ethyl ester (20 g, 57.4 mmol), MS ESI: [M+H]+ m/z 347.9.

Provenance & Evidence