p-Toluenesulfonic acid → HCID 178481364, compound

Participants

Reaction Steps

110 mg (0.2 mmol) of compound from Example 86 above, 3-(4-bromophenyl)-1,9-dimethyl-6-[5-(tetrahydropyran-2-yloxymethyl)-2H-pyrazol-3-yl]-1,9-dihydropyrido[2,3-b]indol-2-one are dissolved in 6 ml of MeOH. A spatula tip of p-toluenesulphonic acid is added and the mixture is refluxed overnight. The reaction medium is evaporated to dryness. A saturated NaHCO3 solution is added and the mixture is extracted with EtOAc. The organic phase is evaporated to dryness. The product obtained is triturated in water, filtered and washed with water. The product is taken up in methanol and evaporated to dryness.

Provenance & Evidence