Sodium Carbonate → 4-Chloro-2-methoxy-5-(prop-1-en-2-yl)benzenamine

HRID 588877Notes

Reaction equation

HRID 588877 reaction equation
[Cl:1][C:2]1[C:7](I)=[CH:6][C:5]([NH2:9])=[C:4]([O:10][CH3:11])[CH:3]=1.[CH3:12][C:13]1(C)[C:17](C)(C)OB(C(C)=C)O1.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:1][C:2]1[C:7]([C:13]([CH3:17])=[CH2:12])=[CH:6][C:5]([NH2:9])=[C:4]([O:10][CH3:11])[CH:3]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 109974264,4,5,5-Tetramethyl-2-(prop-1-en-2-yl)-1,3,2-dioxaborolaneHCID 917583774-Chloro-5-iodo-2-methoxyaniline

Product 1

HCID 904593934-Chloro-2-methoxy-5-(prop-1-en-2-yl)benzenamineYield 25%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

A mixture of 4-chloro-5-iodo-2-methoxybenzenamine (1.0 g, 3.53 mmol), 4,4,5,5-tetramethyl-2-(prop-1-en-2-yl)-1,3,2-dioxaborolane (889 mg, 5.29 mmol), Pd(PPh3)4 (363 mg, 0.353 mmol), Na2CO3 (1.12 g, 10.6 mmol) in DME (10 mL) and water (3 mL) was stirred at reflux under argon for 6 h. The reaction mixture was allowed to cool to RT and extracted with ethyl acetate. The organic layer was washed with brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel (5% petroleum ether/ethyl acetate) to afford the desired product (173 mg, 25% yield) as an off-white solid. ESI-MS m/z: 198.5[M+H]+.

Workup

  1. temperatureat reflux under argon for 6 h
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by flash column chromatography on silica gel (5% petroleum ether/ethyl acetate)

Sources & evidence

ORD record
ord-8ff4a43f2955441d84cd9f6b6d98627e
Source dataset
uspto-grants-2016_01
Patent number
US09227978B2

Reaction notes

Loading…