4-Methoxy-alpha-toluenethiol → HCID 89704803, compound

HRID 929002Notes

Reaction equation

HRID 929002 reaction equation
Br[C:2]1[C:3]([F:21])=[C:4]([F:20])[C:5]([NH:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[F:19])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8].C(N(CC)C(C)C)(C)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.[CH3:73][O:74][C:75]1[CH:80]=[CH:79][C:78]([CH2:81][SH:82])=[CH:77][CH:76]=1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[F:20][C:4]1[C:5]([NH:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[F:19])=[C:6]([CH:11]=[C:2]([S:82][CH2:81][C:78]2[CH:79]=[CH:80][C:75]([O:74][CH3:73])=[CH:76][CH:77]=2)[C:3]=1[F:21])[C:7]([O:9][CH3:10])=[O:8]

Participants

7

Reactant 4

HCID 804074-Methoxy-alpha-toluenethiolHCID 81531DiisopropylethylamineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 59519391Methyl 5-bromo-2-(2-fluorophenylamino)-3,4-difluorobenzoate

Product 1

HCID 89704803HCID 89704803, compoundYield 82%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of methyl 5-bromo-3,4-difluoro-2-((2-fluorophenyl)amino)benzoate (12.85 g, 35.6 mmol) in anhydrous 1,4-dioxane (30 mL) was added N,N-diisopropylethylamine (9.21 g, 71.2 mmol). Then Pd2(dba)3 (1.63 g, 1.78 mmol) followed by Xantphos (2.06 g, 3.56 mmol) and 4-methoxy-α-toluenethiol (5.48 g, 35.6 mmol) was added under nitrogen atmosphere. The mixture was stirred overnight at 100° C. under N2 atmosphere and then allowed to cool to ambient temperature. The reaction was quenched with water (150 mL) and extracted with ethyl acetate (200 mL×3). The combined organic extract was washed with water (200 mL×3) and brine (200 mL) sequentially, dried over Na2SO4, filtered and concentrated. The crude product was purified by column chromatography on silica gel (petroleum ether/ethyl acetate, 50:1, v/v) to give the desired product (pale yellow solid, 12.64 g, 82% yield). 1H NMR (400 MHz, CDCl3): δ 9.12 (s, 1H), 7.78 (d, 1H), 7.06-7.44 (m, 6H), 6.82-6.88 (m, 2H), 4.03 (s, 2H), 3.90 (s, 3H), 3.80 (s, 3H).

Workup

  1. additionwas added under nitrogen atmosphere
  2. temperatureto cool to ambient temperature
  3. customThe reaction was quenched with water (150 mL)
  4. extractionextracted with ethyl acetate (200 mL×3)
  5. extractionThe combined organic extract
  6. washwas washed with water (200 mL×3) and brine (200 mL) sequentially
  7. dry with materialdried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe crude product was purified by column chromatography on silica gel (petroleum ether/ethyl acetate, 50:1

Sources & evidence

ORD record
ord-3c85d4748abe4007a519c79361a4b85d
Source dataset
uspto-grants-2016_03
Patent number
US09290468B2

Reaction notes

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