Triethylamine → HCID 178436623, compound

Participants

Reaction Steps

To a solution of 3-(4-cyano-2-ethyl-6-methyl-phenyl)-propionic acid (10.0 g, 46.0 mmol) in EtOH (80 mL), NEt3 (13.97 g, 138.1 mmol) followed by hydroxylamine hydrochloride (6.40 g, 92.1 mmol) is added. The mixture is refluxed for 7 h before it is cooled to rt. The solvent is removed in vacuo. The residue is dissolved in 2 N aq. HCl and the pH is adjusted to 5 by adding 32% aq. NaOH solution. The precipitate that forms is collected, washed with water and dried under high vacuum at 40° C. for 18 h to give 3-[2-ethyl-4-(N-hydroxycarbamimidoyl)-6-methyl-phenyl]-propionic acid (11.7 g) as a beige crystalline powder; LC-MS: tR=0.60 min, [M+1]+=251.09.

Provenance & Evidence