Methyl iodide → HCID 69055843, compound

Participants

Reaction Steps

[5-Ethyl-2-(4-trifluoromethyl-phenyl)-thiazol-4-yl]-acetic acid ethyl ester (2.02 g, 6.13 mmol) is dissolved into anhydrous tetrahydrofuran (THF) (10 mL) and lithium diisopropylamide (LDA) is slowly added at room temperature. This solution is allowed to stir at room temperature and monitored by TLC. After complete conversion, methyl iodide (582 mg, 4.00 mmol) is added slowly and the reaction is followed by TLC. After 18 h., the reaction is not complete, but is quenched with saturated ammonium chloride solution and diluted with diethyl ether. The two phases are separated and the organic layer is washed with water and brine, dried over anhydrous sodium sufate, then concentrated and purified using flash column chromatography (10% EtOAc/Hexanes). The pure 2-[5-Ethyl-2-(4-trifluoromethyl-phenyl)-thiazol-4-yl]-propionic acid ethyl ester (1.30 g, 3.64 mmol) is obtained in 59% yield.

Provenance & Evidence