Sodium Hydroxide → HCID 15671983, compound

Participants

Reaction Steps

After addition of NaOH (0.31 g, in pellet form, 95% content) to a solution of ethyl 2-[5-(4-chloro-1-methyl-5-methylthio-1H-pyrazol-3-yl)-2,4-dichlorophenylthio]propionate (2.28 g, 5.18 mmoles) in 50 ml ethanol, several drops of water added, thereby conducting the reaction for 3 hours at room temperature. Then the solvent was removed by evaporation of the resulting solution under reduced pressure. Water and ethyl acetate were added to the residue and the formed aqueous layer was separated. The aqueous layer was acidified with hydrochloric acid. The objective product was extracted from the aqueous layer with ethyl acetate. The extract solution was washed with water, dehydrated, and evaporated to dryness, giving crystals (1.74 g) of the title compound, m.p. 180.0° C., yield 81.6%.

Provenance & Evidence