1-[(3-chlorophenyl)methyl]piperidine-2,4-dione

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-(3-Chlorobenzyl)piperidine-2,4-dione (1.2 g) was dissolved in ethanol (25 ml), and methylhydrazine (0.5 ml) was added. The mixture was heated under reflux for 1 hr. The reaction mixture was concentrated under reduced pressure and the obtained residue was purified by silica gel column chromatography (chloroform:methanol=95:1) to give 1-(3-chlorobenzyl)-4-(methylhydrazono)piperidin-2-one (1.05 g). The mixture was heated under reflux for 1 hr The reaction mixture was concentrated under reduced pressure the obtained residue was purified by silica gel column chromatography (chloroform:methanol=95:1)