Triethylamine → HCID 178516688, compound

Participants

Reaction Conditions

Reaction Steps

4-nitro-phenylisothiocyanate (43 mg; 1.2 eq.) is added to a solution of benzyl (2S)-2-[(1H-indol-3-ylmethyl)amino]-4-(4-phenyl-1H-imidazol-2-yl)butanoate (93 mg; 1 eq.) in THF (2 ml). The mixture is stirred for 2 hours at approximately 20° C. then diluted with 4 ml of THF. Aminomethylpolystyrene resin (acquired from Novabiochem, load 3.2 mmol/g, 125 mg, 2 eq.) is added, then triethylamine (200 μl). The mixture is stirred for 15 hours at approximately 20° C. then filtered on frit. The filtrate is concentrated to dryness under reduced pressure at 40° C. (a co-evaporation with dichloromethane is necessary to eliminate the excess triethylamine). Purification of the residue by flash chromatography on silica gel (eluent: ethyl acetate/heptane 9:1) yields the expected compound (90 mg; 84% yield).

Provenance & Evidence