Triphenylphosphine → 3-[2-(4-Chloro-phenyl)-thiazol-5-ylmethoxy]-cyclopent-2-enone

Participants

Reaction Steps

To a solution of [2-(4-Chloro-phenyl)-thiazol-5-yl]-methanol (2 g, 8.8 mmol) in anhydrous THF (50 ml), at 0° C., under an atmosphere of nitrogen was added cyclopentane-1,3-dione (1.12 g, 11.4 mmol), followed by triphenylphosphine (2.99 g, 11.4 mmol). Diisopropylazodicarboxylate (2.2 ml, 11.4 mmol) was then added dropwise over a period of 5 minutes and the reaction allowed to warm to room temperature and stirred for 2 hours. The crude reaction mixture was dry loaded onto silica and purified by flash chromatography to give 3-[2-(4-Chloro-phenyl)-thiazol-5-ylmethoxy]-cyclopent-2-enone (2.12 g).

Provenance & Evidence