Potassium Phosphate, Tribasic → 4-(Dimethylphosphoryl)-2-ethylaniline

HRID 1472063Notes

Reaction equation

HRID 1472063 reaction equation
Br[C:2]1[CH:8]=[CH:7][C:5]([NH2:6])=[C:4]([CH2:9][CH3:10])[CH:3]=1.[CH3:11][PH:12](=[O:14])[CH3:13].P([O-])([O-])([O-])=O.[K+].[K+].[K+]>CN(C=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2>[CH3:11][P:12]([C:2]1[CH:8]=[CH:7][C:5]([NH2:6])=[C:4]([CH2:9][CH3:10])[CH:3]=1)([CH3:13])=[O:14]

Participants

7

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 28012834-Bromo-2-ethylanilineHCID 178503022methylphosphonoylmethane

Product 1

HCID 670526794-(Dimethylphosphoryl)-2-ethylanilineYield 78.1%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)CatalystHCID 6228DimethylformamideSolvent

Procedure

To a solution of 4-bromo-2-ethylaniline (0.400 g, 2.00 mmol) in 8 mL DMF was added dimethylphosphine oxide (0.171 g, 2.20 mmol), palladium acetate (22.4 mg, 0.0100 mmol), XANTPHOS (69.4 mg, 0.120 mmol), and potassium phosphate (0.467 g, 2.20 mmol). The mixture was purged with nitrogen, and subjected to microwaves at 150° C. for 20 minutes. The reaction mixture was concentrated and purified by silica gel chromatography (0-20% 7N ammonia in methanol:dichloromethane) to afford the desired product (0.308 g, 78% yield).

Workup

  1. customThe mixture was purged with nitrogen
  2. concentrationThe reaction mixture was concentrated
  3. custompurified by silica gel chromatography (0-20% 7N ammonia in methanol:dichloromethane)

Sources & evidence

ORD record
ord-94093d76cde0436face17abe5fbe14b1
Source dataset
uspto-grants-2015_04
Patent number
US09012462B2

Reaction notes

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