Methyl iodide → HCID 16100378, compound

Participants

Reaction Steps

A solution of 2-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-propionic acid methyl ester (1.23 g, 3.9 mmoles) from Example 14A in dry THF (3 mL) was added dropwise to a −65° C. solution of 1.8 N lithium diisopropylamine (LDA) in dry THF (2.4 mL) and stirred at this temperature for 1 hour. Methyl iodide (0.49 mL, 7.88 mmoles) was added and the mixture was allowed to slowly warm to room temperature and stir for 2 hours at room temperature. The mixture was quenched with ice/water and partitioned with ethyl acetate. The aqueous layer was extracted with ethyl acetate (3×) and the combined organic extracts washed with water, dried (MgSO4), filtered and the filtrate concentrated under reduced pressure. The residue was purified (silica gel, 10-30% acetone in hexane) to provide the title compound as a yellowish solid.

Provenance & Evidence