Ethylamine hydrochloride → HCID 56643812, compound

Participants

Reaction Steps

(S)-2-(6-(4-Chlorophenyl)-8-(3-formylphenyl)-1-methyl-4H-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepin-4-yl)-N-ethylacetamide (for a preparation see Intermediate 5) (75 mg) was dissolved in DCM (5 ml). Ethylamine hydrochloride (18.42 mg) and acetic acid (8.62 μl) were added and the reaction mixture was stirred for 5 min. Sodium triacetoxyborohydride (160 mg) was added and the reaction mixture was stirred at room temperature, under nitrogen, overnight. Saturated sodium hydrogen carbonate solution (5 ml) was added and the reaction mixture was stirred for 10 min. The organic phase was separated and the saturated sodium hydrogen carbonate solution was extracted with DCM (10 ml). The DCM extracts were combined, dried and the solvent was evaporated. The residue was chromatographed (0-15% methanol:DCM) and triturated with diethyl ether. The solid was dried in a vacuum dessicator at 40° C. over the weekend to give (S)-2-(6-(4-chlorophenyl)-8-(3-((ethylamino)methyl)phenyl)-1-methyl-4H-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepin-4-yl)-N-ethylacetamide (52.4 mg) as a white solid. LCMS (formate): MH+ 527, RT 0.75 min

Provenance & Evidence