1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → HCID 59202064, compound

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Reaction Steps

Following general procedure B2, (2E)-3-(methoxycarbonyl)prop-2-enoic acid (methyl hydrogen fumarate, MHF) (0.50 g, 3.84 mmol) was activated with N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDAC) (0.88 g, 4.60 mmol) in 12 mL of dichloromethane (DCM) at ca. 0° C. (2S)—N,N-Diethyl-2-hydroxypropanamide (0.44 g, 3.07 mmol) (0.44 g, 3.07 mmol) and 4-(N,N-dimethyl)aminopyridine (DMAP) (0.40 g, 3.18 mmol) were added to the activated carboxylic acid. After work-up and isolation, and purification by mass-guided preparative HPLC/lyophilization and by silica gel flash column chromatography (Biotage) using ethyl acetate (EtOAc) and hexanes afforded 0.17 g (18% yield) of the title compound (33) as a clear oil. 1H NMR (CDCl3, 400 MHz): δ 6.95-6.87 (m, 2H), 5.43 (q, J=6.8 Hz, 1H) 3.80 (s, 3H), 3.50-3.26 (m, 4H), 1.49 (d, J=6.4 Hz, 3H), 1.26 (t, J=6.8, 3H), 1.12 (t, J=7.6 Hz, 3H). MS (ESI): m/z 258.06 (M+H)+.

Provenance & Evidence