p-Toluenesulfonic acid monohydrate → 5-[[1-[1-(3,4-dimethylphenyl)-3-methyl-5-oxopyrazol-4-ylidene]ethylamino]carbamoyl]-N-propan-2-ylthiophene-2-carboxamide

Participants

Reaction Conditions

Reaction Steps

1-(5-Hydroxy-3-methyl-1-(3,4-dimethylphenyl)-1H-pyrazol-4-yl)-ethanone (30 mg, 0.123 mmol, synthesized in accordance with patent document 25), 5-hydrazinocarbonyl-thiophene-2-carboxylic acid 2-propylamide prepared in Reference Synthetic Example 1 and p-toluenesulfonic acid monohydrate (2 mg) in isopropanol (1 mL) were heated at 90° C. overnight under reflux. After cooling, chloroform-ether was added, and the resulting crystals were collected by filtration, washed with chloroform-ether and dried to give 24 mg of the desired product (yield 43%).

Provenance & Evidence