1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → HCID 59605224, compound

Participants

Reaction Steps

(R)-Pyrrolidin-3-ol (0.276 g, 3.17 mmol) was added to a mixture of azetidine-1,3-dicarboxylic acid mono-tert-butyl ester (0.4 g, 2.11 mmol) and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (0.61 g, 3.17 mmol) in dichloromethane (7 mL). The resulting reaction mixture was stirred at RT under nitrogen atmosphere for 18 h. The mixture was diluted with DCM (10 mL) and washed with water (1×15 mL), 10% aqueous citric acid solution (2×15 mL) and brine (2×15 mL), and dried over sodium sulfate. The solvents were reduced in vacuo to afford the title compound as colourless oil (0.42 g, 74%). 1H NMR (400 MHz, CDCl3): δ 4.54-4.52 (1 H, m), 4.11-4.09 (4 H, m), 3.50-3.48 (5 H, m), 2.01-2.00 (2 H, m), 1.43 (9 H, d, J=0.78 Hz)

Provenance & Evidence