Hydroxyamine hydrochloride → Benzyl N-allyl-N-[2-hydroxyiminoethyl]carbamate

HRID 77568Notes

Reaction equation

HRID 77568 reaction equation
[CH2:1]([N:4]([CH2:15][CH:16]=O)[C:5](=[O:14])[O:6][CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH:2]=[CH2:3].Cl.[NH2:19][OH:20].O.O.O.C([O-])(=O)C.[Na+]>C(#N)C.O>[CH2:1]([N:4]([CH2:15][CH:16]=[N:19][OH:20])[C:5](=[O:14])[O:6][CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH:2]=[CH2:3]

Participants

6

Reactant 3

HCID 443297Hydroxyamine hydrochlorideHCID 23665404Sodium Acetate TrihydrateHCID 57415664Benzyl allyl(2-oxoethyl)carbamate

Product 1

HCID 74074414Benzyl N-allyl-N-[2-hydroxyiminoethyl]carbamateYield 90.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Procedure

A solution of benzyl N-allyl-N-(2-oxoethyl)carbamate (25 g, 107 mmol) in acetonitrile (150 mL) is treated with hydroxylamine hydrochloride (9.68 g, 139 mmol) and a solution of sodium acetate trihydrate (16 g, 117.9 mmol) in water (75 mL). The mixture is stirred at room temperature overnight. The acetonitrile is evaporated and the aqueous solution is extracted with ethyl acetate. The organic layer is separated, dried over magnesium sulfate, and concentrated under vacuum to give the title compound (24 g, 90%). ES/MS (m/e): 249 (M+H).

Workup

  1. customThe acetonitrile is evaporated
  2. extractionthe aqueous solution is extracted with ethyl acetate
  3. customThe organic layer is separated
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-9441995f7e9f438e9ef0b36e51468443
Source dataset
uspto-grants-2014_09
Patent number
US08841293B1

Reaction notes

Loading…