Diisopropylethylamine → HCID 18667639, compound

Participants

Reaction Steps

To a suspension of 3-amino-1-(4-methylpyridin-2-yl)pyrrolidine (177 mg) and N,N′-bis(tert-butoxycarbonyl)thiourea (331 mg) and diisopropylethylamine (0.4 ml) in dichloromethane (10 ml) was added 1-methyl-2-chloropyridinium iodide (332 mg), and the mixture was stirred for 16 hours. The mixture was diluted with ethyl acetate, washed with water and brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography (silica gel 25 g, n-hexane:ethyl acetate=4:1) and crystallized from diisopropyl ether to give N,N′-bis(tert-butoxycarbonyl)-N″-(1-(4-methylpyridin-2-yl)pyrrolidin-3-yl)guanidine (290 mg).

Provenance & Evidence