Imidazole → 8-(Tert-butyldimethylsilyloxy)quinoline-2-carbaldehyde

Participants

Reaction Steps

A solution of 8-hydroxyquinoline-2-carbaldehyde (10.00 g, 57.75 mmol) and imidazole (8.649 g, 127.0 mmol) in DCM (290 mL, 57.75 mmol) was cooled to 0° C. on an ice bath. TBDMS-Cl (9.574 g, 63.52 mmol) was added and the reaction stirred overnight at ambient temperature. Water was added and the reaction transferred to a separatory funnel. The aqueous phase was extracted 3 times with DCM, the organics combined, followed by washes with water and brine. The combined organic layers were dried over Na2SO4, filtered and concentrated to residue under reduced pressure. The residue was purified by flash column chromatography, eluting with 25% EtOAc/Hexanes to give the product (12.2 g, 74% yield). MS APCI (+) m/z 288.1 (M+1) detected.

Provenance & Evidence