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Methanol → 4-(2-(Benzyloxy)ethoxy)-2-methylaniline

HRID 415090
Notes
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Reaction equation

HRID 415090 reaction equation
[CH2:1]([O:8][CH2:9][CH2:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([N+:18]([O-])=O)=[C:14]([CH3:21])[CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CO.C([O-])=O.[NH4+].ClCCl>[Pd].O>[CH2:1]([O:8][CH2:9][CH2:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([NH2:18])=[C:14]([CH3:21])[CH:13]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 887MethanolHCID 6344DichloromethaneHCID 2723923Ammonium formate2×HCID 232945584-(2-(Benzyloxy)ethoxy)-2-methyl-1-nitrobenzene

Product 1

HCID 593494534-(2-(Benzyloxy)ethoxy)-2-methylanilineYield 103.8%

Reagents, catalysts & solvents 2

HCID 23938
Palladium
Catalyst
HCID 962WaterSolvent

Procedure

A 500 ml round bottomed flask fitted with a teflon stirrer bar was charged with 4-(2-(benzyloxy)ethoxy)-2-methyl-1-nitrobenzene (5.15 g) and methanol (200 ml) and stirred to dissolve all material. The reaction mixture was charged with 10% palladium on charcoal (50% water w/w) and stirred at room temperature. Ammonium formate (20.5 g) was added in one lot and the reaction mixture was stirred at room temperature. After 1 hour, additional ammonium formate (20.5 g) was added, and the progress of the reaction was followed by TLC (silica, dichloromethane). After 4 hours, the reaction was found to be complete. The reaction mixture was then filtered through a plug of Celite, which was washed with methanol (2×50 ml). The resulting filtrate was evaporated under reduced pressure to give a solid. This material was dissolved in water (300 ml), extracted with diethylether (3×100 ml). The combined ethereal solutions were washed with water (2×100 ml) and saturated sodium chloride solution (2×100 ml), dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure to give 4.79 g of 4-(2-(benzyloxy)ethoxy)-2-methylaniline, 1H-NMR (CDCl3) 7.39 (m, 2H), 7.37 (s, 1H), 7.31 (m, 2H), 6.33 (m, 1H), 6.30 (s, 1H), 6.23 (m, 1H), 5.85 (bs, 2H), 4.63 (s, 2H), 4.11 (m, 2H), 3.79 (m, 2H), 2.35 (s, 3H).

Workup

  1. customA 500 ml round bottomed flask fitted with a teflon stirrer bar
  2. dissolutionto dissolve all material
  3. stirringstirred at room temperature
  4. stirringthe reaction mixture was stirred at room temperature
  5. waitAfter 4 hours
  6. filtrationThe reaction mixture was then filtered through a plug of Celite, which
  7. washwas washed with methanol (2×50 ml)
  8. customThe resulting filtrate was evaporated under reduced pressure
  9. customto give a solid
  10. extractionextracted with diethylether (3×100 ml)
  11. washThe combined ethereal solutions were washed with water (2×100 ml) and saturated sodium chloride solution (2×100 ml)
  12. dry with materialdried over anhydrous sodium sulfate
  13. filtrationfiltered
  14. customevaporated under reduced pressure

Sources & evidence

ORD record
ord-c481f19bfa994c5595ee359b74740065
Source dataset
uspto-grants-2012_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08088767B2

Reaction notes

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