Tetrahydrofuran → HCID 178503597, compound

Participants

Reaction Steps

At room temperature, to a mixture of 5-chloro-4-formyl-3-(4-isopropoxy-3-methyl-phenyl)-1-methyl-1H-pyrazole (described in Reference Preparation example 96) 10 g and tetrahydrofuran 100 ml was added sodium thiomethoxide 2.9 g and the resulting mixture was stirred for eight hours. To the reaction mixture was added water 50 mL and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with water and was dried over anhydrous magnesium sulfate, and was then concentrated under reduced pressure. The resulting residue was subjected to a silica gel column chromatography to give 4-formyl-3-(4-isopropoxy-3-methyl-phenyl)-5-methylthio-1H-pyrazole 10.4 g.

Provenance & Evidence