4-tert-Butylphenol → Ethyl 2-(4-tert-butylphenoxy)propanoate

HRID 1393412Notes

Reaction equation

HRID 1393412 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([OH:11])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].Br[CH:15]([CH3:21])[C:16]([O:18][CH2:19][CH3:20])=[O:17]>CN(C=O)C.C(OCC)(=O)C>[CH2:19]([O:18][C:16](=[O:17])[CH:15]([O:11][C:8]1[CH:7]=[CH:6][C:5]([C:1]([CH3:4])([CH3:2])[CH3:3])=[CH:10][CH:9]=1)[CH3:21])[CH3:20]

Participants

6

Reactant 3

HCID 73934-tert-ButylphenolHCID 24758Sodium hydrideHCID 79040Ethyl 2-bromopropionate

Product 1

HCID 3023318Ethyl 2-(4-tert-butylphenoxy)propanoateYield 100%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

4-t-Butylphenol (7.52 g, 50 mmol) in anhydrous DMF (40 mL) was added dropwise to NaH (2.2 g, 55 mmol, 60% w/w in mineral oil) at 0° C. under an atmosphere of nitrogen. After five min, ethyl 2-bromopropionate (6.49 mL, 50 mmol, d=1.394) was added rapidly dropwise and the resultant mixture was allowed to stir for 18 h, gradually warming to ambient temperature. The reaction mixture was diluted with ethyl acetate (300 mL) and extracted twice with water and once with brine. The organic layer was dried over Na2SO4 and concentrated in vacuo to produce a colorless oil (12.5 g, 100%) 1H NMR (300 MHz, CDCl3): δ 7.28 (d, 2H, J=5.5), 6.80 (d, 2H, J=5.5), 4.70 (q, 1H, J=6.6), 4.22 (q, 2H, J=7.1), 1.59 (d, 3H, J=6.6), 1.28 (s, 9H), 1.25 (t, 3H, J=7.1). MS [EI+] 251 (M+H)+, 268 (M+NH4)+.

Workup

  1. extractionextracted twice with water and once with brine
  2. dry with materialThe organic layer was dried over Na2SO4
  3. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-2ee87feefcb74c2d803231ede5834bf6
Source dataset
uspto-grants-2008_03
Patent number
US07345070B2

Reaction notes

Loading…