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Benzophenone imine → 2-(2-Fluoroethoxy)aniline

HRID 2177614
Notes
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Reaction equation

HRID 2177614 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[O:8][CH2:9][CH2:10][F:11].CC([O-])(C)C.[Na+].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C(=[NH:77])(C1C=CC=CC=1)C1C=CC=CC=1>C1(C)C=CC=CC=1>[F:11][CH2:10][CH2:9][O:8][C:3]1[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=1[NH2:77]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 136809Benzophenone imineHCID 634876Binap, (A+-)-HCID 15058601HCID 15058601, compoundHCID 23676156Sodium t-butoxide

Product 1

HCID 150586142-(2-Fluoroethoxy)anilineYield 99.9%

Reagents, catalysts & solvents 1

HCID 1140
Toluene
Solvent

Conditions

Temperature
120 °C

Procedure

To a solution of the product of Example 126, Step 1 (800 mg, 3.65, mmol) in deoxygenated toluene (15 mL) was added NaOtBu (498 mg, 5.2 mmol), BINAP (364 mg, 0.58 mmol) Pd2(dba)3 (217 mg, 0.24 mmol) and benzophenone imine (0.8 mL, 4.7 mmol). The reaction mixture was heated at 120° C. for 3 h. The crude mixture was then washed with DCM and the aqueous layer was made basic with sat. NaHCO3. The aqueous layer was extracted with DCM and the combined organic extracts were dried (Na2SO4), filtered and concentrated. The residue was purified by chromatography on silica gel (0-5% MeOH in DCM) to afford the title compound (566 mg, 90%). MS (ESI) mass calcd. C8H10FNO, 155.1. m/z found, 156.1 [M+H]+.

Workup

  1. washThe crude mixture was then washed with DCM
  2. extractionThe aqueous layer was extracted with DCM
  3. dry with materialthe combined organic extracts were dried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography on silica gel (0-5% MeOH in DCM)

Sources & evidence

ORD record
ord-d917b514dcce49609b61846058e405fb
Source dataset
uspto-grants-2015_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09066946B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes