Tetrahydrofuran → tert-Butyl (1S,2S)-1-amino-2-ethylcyclopropane-1-carboxylate

HRID 719842Notes

Reaction equation

HRID 719842 reaction equation
[C:1]([O:5][C:6]([C@:8]1([NH:13]C(OCC[Si](C)(C)C)=O)[CH2:10][C@@H:9]1[CH2:11][CH3:12])=[O:7])([CH3:4])([CH3:3])[CH3:2].CCCC[N+](CCCC)(CCCC)CCCC.[F-].C1COCC1>CCOC(C)=O>[C:1]([O:5][C:6]([C@:8]1([NH2:13])[CH2:10][C@@H:9]1[CH2:11][CH3:12])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 2724141Tetrabutylammonium FluorideHCID 86601847(1S,2S) 2-Ethyl-1-(2trimethylsilanylethoxycarbonylamino)cyclopropane-carboxylic acid tert-butyl ester

Product 1

HCID 86620254tert-Butyl (1S,2S)-1-amino-2-ethylcyclopropane-1-carboxylate

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To the product of Step 3 (3 g, 9 mmol) was added a 1.0 M TBAF solution in THF (9.3 mL, 9.3 mmol) and the mixture heated to reflux for 1.5 h, cooled to rt and then diluted with 500 mL of EtOAc. The solution was successively washed with water (2×100 mL), brine (2×100 mL), dried (MgSO4), concentrated in vacuo to provide the title intermediate

Workup

  1. temperaturethe mixture heated
  2. temperatureto reflux for 1.5 h
  3. washThe solution was successively washed with water (2×100 mL), brine (2×100 mL)
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-fab4d6ad31c9426aa19ce1e9010a24f7
Source dataset
uspto-grants-2006_11
Patent number
US07132504B2

Reaction notes

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