2-methyl-1,3-diphenylprop-2-en-1-one

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

Procedure: Following the procedure of Example 1 but substituting α-methoxychalcone for α-methylchalcone, and reacting the same with hydrazine hydrate, there is prepared 3,5-diphenyl-4-methoxypyrazoline. The so-formed pyrazoline is then reacted with Pd/C at reflux to obtain 3,5-diphenyl-4-methoxypyrazole in good yield. at reflux

Conditions: temp:68.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Isolated α-methylchalcone, 1.5 g (85% pure product by gas liquid chromatography) (0.00578 mole) is reacted with 0.55 g (0.008 mole) of 75% hydrazine hydrate in 7.5 ml of methanol and 1 ml of water under N2 at reflux (68° C) for 1 hour. Gas liquid chromatography shows the α-methylchalcone had reacted to form 3,5-diphenyl-4-methylpyrazoline. had reacted

Conditions: temp:68.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Isolated α-methylchalcone, 1.5 g (85% pure product by gas liquid chromatography) (0.00578 mole) is reacted with 0.55 g (0.008 mole) of 75% hydrazine hydrate in 7.5 ml of methanol and 1 ml of water under N2 at reflux (68° C) for 1 hour. Gas liquid chromatography shows the α-methylchalcone had reacted to form 3,5-diphenyl-4-methylpyrazoline. had reacted

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

Procedure: Following the procedure of Example 1 but substituting α-methoxychalcone for α-methylchalcone, and reacting the same with hydrazine hydrate, there is prepared 3,5-diphenyl-4-methoxypyrazoline. The so-formed pyrazoline is then reacted with Pd/C at reflux to obtain 3,5-diphenyl-4-methoxypyrazole in good yield. at reflux

Conditions: temp:68.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Isolated α-methylchalcone, 1.5 g (85% pure product by gas liquid chromatography) (0.00578 mole) is reacted with 0.55 g (0.008 mole) of 75% hydrazine hydrate in 7.5 ml of methanol and 1 ml of water under N2 at reflux (68° C) for 1 hour. Gas liquid chromatography shows the α-methylchalcone had reacted to form 3,5-diphenyl-4-methylpyrazoline. had reacted