Diisopropylethylamine → HCID 178422574, compound

Participants

Reaction Conditions

Reaction Steps

Compound 3 (935 mg, 4.2 mmol) was dissolved in 5 mL of dimethylformamide, aminoguanidine hydrochloride salt (695 mg, 6.3 mmol) and diisopropyl ethylamine (1.1 mL, 6.3 mmol) were added and the mixture stirred at 50° C. for 18 hours. The mixture was then concentrated and to the resulting residue was added 2M aqueous sodium hydroxide solution (20 mL). The mixture was stirred at 50° C. for 18 hours and then cooled to room temperature. The resulting mixture was then neutralized with aqueous 1N HCl and the precipitate (product) collected to give 5-amino-4-(2-chloro-4-cyclopropyl-6-methylphenyl)-4H-1,2,4-triazole-3-thiol (4). (780 mg, 66% yield)

Provenance & Evidence