Butylamine → HCID 19917483, compound

To 7.5 ml of tetrahydrofuran were added 850 mg (5 mmol) of (E)-N-(3-chloro-2-propenyl)propylamine hydrochloride, 47.6 mg (0.25 mmol) of copper (I) iodide, 2.4 mg (0.1 mmol) of palladium acetate and 52.5 mg (0.2 mmol) of triphenylphosphine, and further, 1.48 ml (15 mmol) of n-butylamine and 0.74 ml (6 mmol) of tert-butylacetylene under ice cooling. The mixture was stirred for 20 hours at room -.temperature, and concentrated under reduced pressure. The residue was subjected to silica gel chromatography (n-hexane→n-hexane/ethyl acetate=3/2). The desired fractions were put together and concentrated under reduced pressure. The residue was dissolved with 15 ml of 23% hydrogen chloride methanol solution, and the solvent and excess hydrogen chloride were distilled off. The resulting crystals were suspended in 3 ml of a mixture of ethyl acetate and diisopropyl ether (1/1), filtered, washed with 1 ml of the same solvent and dried to obtain 780 mg (yield: 72%) of the above identified compound as slightly yellowish brown crystalline powder.

1. concentrationconcentrated under reduced pressure
2. concentrationconcentrated under reduced pressure
3. dissolutionThe residue was dissolved with 15 ml of 23% hydrogen chloride methanol solution
4. distillationthe solvent and excess hydrogen chloride were distilled off
5. filtrationfiltered
6. washwashed with 1 ml of the same solvent
7. customdried
8. customto obtain 780 mg (yield: 72%) of the

ORD record

ord-d1efbf77bda2459bb02a1d583f852661

Source dataset

uspto-grants-1993_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05231183