Lithium Hydroxide → HCID 67445163, compound

Participants

Reaction Steps

To a solution of 0.25 g (0.5 mmole) of 4-(3-chloro-phenyl)-2-[5-(4-methyl-piperazin-1-ylmethyl)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid ethyl ester (I.2e) in 10 mL of tetrahydrofuran and 10 mL of water was added 0.12 g (5 mmole) of lithium hydroxide. The mixture was stirred at ambient temperature for 1 hour. The mixture was concentrated under reduced pressure, 40 mL of water was added and the pH adjusted to 6-7 by the addition of 1M hydrochloric acid. The precipitate was collected by filtration to give 0.120 g of 4-(3-chloro-phenyl)-2-[5-(4-methyl-piperazin-1-ylmethyl)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid (I.3a) as a white solid.

Provenance & Evidence