Azide → 2-Oxazolidinone, 3-[(2S,4S)-4-azido-2-(1-methylethyl)-1-oxo-4-[(2S,4S)-tetrahydro-4-(1-methylethyl)-5-oxo-2-furanyl]butyl]-4-(phenylmethyl)-, (4S)-

HRID 725616

Reaction equation

HRID 725616 reaction equation
[N-:1]=[N+:2]=[N-:3].C([N+](CCCC)(CCCC)CCCC)CCC.[CH:21]([C@@H:24]1[CH2:28][C@@H:27]([C@H:29](Br)[CH2:30][C@H:31]([C:35]([N:37]2[C@@H:41]([CH2:42][C:43]3[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=3)[CH2:40][O:39][C:38]2=[O:49])=[O:36])[CH:32]([CH3:34])[CH3:33])[O:26][C:25]1=[O:51])([CH3:23])[CH3:22].[N-]=[N+]=[N-]>C1(C)C=CC=CC=1>[CH:21]([C@@H:24]1[CH2:28][C@@H:27]([C@@H:29]([N:1]=[N+:2]=[N-:3])[CH2:30][C@H:31]([C:35]([N:37]2[C@@H:41]([CH2:42][C:43]3[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=3)[CH2:40][O:39][C:38]2=[O:49])=[O:36])[CH:32]([CH3:34])[CH3:33])[O:26][C:25]1=[O:51])([CH3:22])[CH3:23]

Participants

5

Reactant 3

HCID 33558AzideHCID 57432321-Butanaminium, N,N,N-tributyl-, azideHCID 54147056(4S)-3-[(2S,4R)-4-Bromo-2-(1-methylethyl)-1-oxo-4-[(2S,4S)-tetrahydro-4-(1-methylethyl)-5-oxo-2-furanyl]butyl]-4-(phenylmethyl)-2-oxazolidinone

Product 1

HCID 533855072-Oxazolidinone, 3-[(2S,4S)-4-azido-2-(1-methylethyl)-1-oxo-4-[(2S,4S)-tetrahydro-4-(1-methylethyl)-5-oxo-2-furanyl]butyl]-4-(phenylmethyl)-, (4S)-

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

13.6 g of freshly dried tetrabutylammonium azide are added to a solution, stirred at room temperature, of 17.8 g of 3(S)-isopropyl-5(S)-{1(R)-bromo-4-methyl-3(S)-[(4(S)-benzyloxazolidin-2-on-3-yl)-carbonyl]-pentyl}-tetrahydrofuran-2-one in 180 ml of toluene, and a further 10 g of the azide are added in the course of 160 hours' stirring at room temperature. The reaction mixture is then partitioned between ethyl acetate and water (2×) and saturated sodium chloride solution (1×). The organic phases are combined, dried over sodium sulfate and concentrated. The title compound is obtained from the evaporation residue by means of FC (hexane/ethyl acetate=8:2) and crystallisation from diethyl ether/hexane: m.p.=102°-103° C.; Rf (hexane/ethyl acetate=8:2)=0.2; HPLC Rt =18.55 minutes; FAB-MS (M+H)+ =457.

Workup

  1. customThe reaction mixture is then partitioned between ethyl acetate and water (2×) and saturated sodium chloride solution (1×)
  2. dry with materialdried over sodium sulfate
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-2071948850b848869ff9826271583071
Source dataset
uspto-grants-1998_01
Patent number
US05705658

Linked notes

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