1,3-Propanediamine → Benzyl (3-aminopropyl)carbamate

HRID 5555

Reaction equation

[NH2:1][CH2:2][CH2:3][CH2:4][NH2:5].[CH2:6]([O:13][C:14](ON1C(=O)CCC1=O)=[O:15])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>C(Cl)(Cl)Cl>[CH2:6]([O:13][C:14]([NH:1][CH2:2][CH2:3][CH2:4][NH2:5])=[O:15])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Participants

Conditions

Temperature: 0 °C

Procedure

1,3-Diaminopropane (35.5 g, 0.48 mol) was dissolved in 300 mL CHCl3, and the solution was cooled to 0° C. A solution of N-(benzyloxycarbonyloxy)succinimide (4.5 g, 0.018 mol) in 150 mL CHCl3 was added dropwise over 6 h, with the internal temperature maintained below 10° C. After addition was complete, the reaction solution was stirred at room temperature overnight. The solution was washed with water, dried (Na2SO4), filtered and concentrated in vacuo to provide 3.0 g (80%) of the title compound as a low melting solid: 1H NMR (CDCl3) δ 1.25 (bs, 2 H), 1.63 (quintet, 2 H), 2.77 (t, 2 H), 3.2-3.34 (bm, 2 H), 5.09 (s, 2 H), 5.37 (bm, 1 H), 7.28-7.40 (m, 5 H); MS, m/e 209 ((M+H)+).

Workup

temperaturemaintained below 10° C
additionAfter addition
washThe solution was washed with water
dry with materialdried (Na2SO4)
filtrationfiltered
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-9ef05d718e3f423da6bae4217b5ff8bd
Source dataset: uspto-grants-1993_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05244910

Linked notes

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