Methoxymethyl-triphenylphosphonium chloride → 5-(2-Methoxy-1-methyl-vinyl)4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole

関与物質

反応手順

To a solution of (methoxymethyl)triphenyl phosphonium chloride (15.5 g, 45.2 mmole) in toluene (330 mL) is added potassium t-butoxide (5.07 g, 45.2 mmole) in one portion and stirred for 30 minutes, then a solution of 1-[4-Methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-yl]-ethanone (8.6 g, 30.1 mmole) in toluene (20 mL) is added. The reaction is stirred for 4 hours, quenched by NH4Cl aqueous solution, extracted with ethyl acetate and then concentrated on rota vapor. The residue is purified on a silica gel column, eluting with 0–10% ethyl acetate in hexane and concentrated to provide the title compound (7.0 g).

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