Sodium Hydroxide → HCID 67367064, compound

Participants

Reaction Steps

To a solution of methyl 1-[2-(4-chlorophenyl)-2-oxoethyl]-4-(dimethylcarbamoyl)-1H-pyrrole-2-carboxylate (90 mg, 0.26 mmol) in THF (1 mL) was added lithium hydroxide monohydrate (22 mg, 0.52 mmol) in water (1 mL). The reaction mixture was stirred at room temperature for 18 h (monitored by LCMS). A aqueous solution of NaOH (1 M) (25 mL) was added and the mixture washed with EtOAc (25 mL) to remove the remaining starting material. The aqueous layer was then acidified to pH 2-3 with an aqueous solution of HCl (1 M) and extracted with a mixture of 20% of propan-2-ol/DCM (2×25 mL). The organic fractions were combined, dried (MgSO4) and concentrated in vacuo to give 1-[2-(4-chlorophenyl)-2-oxoethyl]-4-(dimethylcarbamoyl)-1H-pyrrole-2-carboxylic acid as a yellow solid (90 mg, quantitative yield). ESI-MI m/z [m+H]+ 335.1.

Provenance & Evidence