1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → HCID 87735512, compound

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Reaction Steps

WSC.HCl (683 mg, 3.49 mmol) was dissolved in water (1 mL) and the pH was adjusted to 4.8. The compound of Example 55 (300 mg, 0.582 mmol) was dissolved in the same amount of THF and added to the former solution. O-Trityl hydroxylamine (505 mg, 1.746 mmol) was added and the mixture was stirred for 24 h. The reaction mixture was partitioned between HCl (0.5N, excess) and ethyl acetate. The water phase was extracted several times with ethyl acetate. The recombined organic layer was washed with brine, a saturated sodium hydrogen carbonate solution, and brine. The solvent was evaporated, following drying over sodium sulfate, and the crude was flashed with 30% ethyl acetate in hexanes. 1H NMR(CDCl3, 400 MH: 1.32(s, 9H); 1.50(m, 1H); 1.74(m, 1H); 2.32(m, 6H); 2.53(m, 2H); 3.46(m, 2H); 7.00(m, 1H); 7.16–7.57(m, 30H); FAB: 774(MH+).

Provenance & Evidence