ChemicalBook CAS DataBase List 1-Aminopiperidine

1-Aminopiperidine synthesis

10synthesis methods

Product Name:1-Aminopiperidine
CAS Number:2213-43-6
Molecular formula:C5H12N2
Molecular Weight:100.16

111-24-0 Synthesis

111-24-0
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$5.00/5g

7803-57-8
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$20.10/50g

2213-43-6
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$48.89/5g

Yield:2213-43-6 74%

Reaction Conditions:

in methanol for 25 h;Reflux;

Steps:

N-aminopiperidine (2)
In a 100 ml two-necked flask, hydrazine hydrate (14.55 ml, 0.3 mol) was dissolved in 25 ml of methanol. Solution was heated to reflux and 1,5-dibromopentane (13.62 ml, 0.1 mol) was added dropwise within 1 h. Reaction mixture was left stirring at reflux for 24 h. Methanol was removed under reduced pressure and residue was basified with 40 g of 40% NaOH solution. Mixture was extracted 8 times with Et₂O and combined extracts were dried on anhydrous Na₂SO₄ and filtrated. Solvent was removed under reduced pressure (40 C at 40 mbar). Process yielded 7.380 g (74%) of N-aminopiperidine, a light yellow liquid, which was used in subsequent experiments without further purification.

References:

Ilisson, Mihkel;Tomson, Kristjan;Selyutina, Anastasia;Türk, Silver;Mäeorg, Uno [Synthetic Communications,2015,vol. 45,# 11,p. 1367 - 1373] Location in patent:supporting information

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