Furfural → HCID 178513717, compound

Participants

Reaction Steps

5-amino-3-((3-chlorophenyl)amino)-1H-pyrazole-4-carboxamide (100 mg) was suspended in EtOH (4 mL) and 2-Furaldehyde (1 eq.) and piperidine (1 drop) were added. Stirred at reflux until intermediate was absent (HPLC). After reaction was complete (18 hrs) it was brought to room temperature and filtered to obtain product as a yellow powder. Powder was washed with EtOH. Product was allowed to dry under vacuum for 1 hr. Resulting imine (100 mg) was suspended in 5 mL MeOH and sodium borohydride (10 eq.) was added. HPLC confirmed reaction was complete (absence of imine). After completion (1 hr), precipitate was filtered to obtain D96 as a light yellow powder. Product was washed with deionized water to remove excess sodium borohydride. Product was allowed to dry under vacuum for 18 hrs. 40 mg (38% yield) of final product was obtained.

Provenance & Evidence