反应详情

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).

1. stirringThe reaction is stirred for 4 hours
2. customquenched by NH4Cl aqueous solution
3. extractionextracted with ethyl acetate
4. concentrationconcentrated on rota vapor
5. customThe residue is purified on a silica gel column
6. washeluting with 0–10% ethyl acetate in hexane
7. concentrationconcentrated