Water → N-Propyl-N-(tetrahydrofuran-3-yl)amine

Beteiligte Stoffe

Reaktionsschritte

A suspension of 21.7 g (0.57 mol) of lithium aluminum hydride in 500 ml of THF was admixed dropwise with a solution of 81 g (0.57 mol) of N-(tetrahydrofuran-3-yl)propionamide, and the solution was heated at reflux for 2 h. Excess lithium aluminum hydride was hydrolyzed by dropwise addition of 16 ml of water, 50 ml of 10% strength aqueous sodium hydroxide solution and another 45 ml of water. The white suspension was heated at reflux for one hour, causing the insoluble components to aggregate to a coarse white precipitate. The mixture was filtered off from the precipitate, the precipitate was thoroughly rinsed with ether and the combined filtrates were distilled. B.p. 64° C. (12 mm), yield 41 g. 1H NMR (270 MHz, in CDCl3): δ=0.92 (t, 3H), 1.15 (s, 1H), 1.50 (sext., 2H), 1.70 (m, 1H), 2.10 (m, 1H), 2.55 (m, 2H), 3.38 (m, 1H), 3.56 (dd, 1H), 3.70-3.96 (m, 3H).

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