Nitrogen → HCID 12566255, compound

Participants

Reaction Conditions

Reaction Steps

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a solution of commercially available 1-(4-bromo-2-thienyl)ethan-1-one (2.00 g, 9.75 mmol) in ethylene glycol (10.7 mL) was treated with trimethylorthoformate (2.14 mL, 19.51 mmol) followed by LiBF4 (150 mg, 1.60 mmol). The reaction mixture was heated at 95° C. overnight. Sat. aq. NaHCO3 (20 mL) was added and the mixture was extracted with EA (20 mL). The org. extracts were washed with brine (2×20 mL), dried over MgSO4, filtered, and the solvent was removed under reduced pressure. Purification of the residue by FC (20:80 EA-Hept) gave the title compound as a white solid. TLC:rf (20:80 EA-Hept)=0.50. LC-MS-conditions 02: tR=0.99 min.

Provenance & Evidence