Benzyl mercaptan → HCID 89704930, compound

HRID 929058Notes

Reaction equation

HRID 929058 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[Cl: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.[CH2:73]([SH:80])[C:74]1[CH:79]=[CH:78][CH:77]=[CH:76][CH:75]=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]>[CH2:73]([S:80][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[Cl:19])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8])[C:74]1[CH:79]=[CH:78][CH:77]=[CH:76][CH:75]=1

Participants

7

Reactant 4

HCID 7509Benzyl mercaptanHCID 81531DiisopropylethylamineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 865967715-Bromo-2-(2-chlorophenylamino)-3,4-difluorobenzoic acid methyl ester

Product 1

HCID 89704930HCID 89704930, compoundYield 86%

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-chlorophenyl)amino)benzoate (12.98 g, 34.47 mmol) in anhydrous 1,4-dioxane (30 mL) was added N,N-diisopropylethylamine (8.86 g, 68.94 mmol). Then Pd2(dba)3 (1.63 g, 1.78 mmol) followed by Xantphos (2.06 g, 3.56 mmol) and BnSH (4.48 g, 36.19 mmol) was added under nitrogen atmosphere. The mixture was stirred overnight at 100° C. under N2 atmosphere and then allowed to warm to ambient temperature. The reaction was quenched with water (150 mL) and extracted with ethyl acetate (100 mL×3). The combined organic layers were washed with water (100 mL) and brine (100 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 (white solid, 12.44 g, 86.0% yield). 1H NMR (400 MHz, CDCl3): δ 9.19 (s, 1H), 7.79 (dd, 1H), 7.41 (dd, 1H), 7.24 (m, 5H), 7.18 (m, 1H), 7.00 (m, 1H), 6.87 (m, 1H), 4.08 (s, 2H), 3.90 (s, 3H).

Workup

  1. additionwas added under nitrogen atmosphere
  2. temperatureto warm to ambient temperature
  3. customThe reaction was quenched with water (150 mL)
  4. extractionextracted with ethyl acetate (100 mL×3)
  5. washThe combined organic layers were washed with water (100 mL) and brine (100 mL) sequentially
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe crude product was purified by column chromatography on silica gel (petroleum ether/ethyl acetate, 50:1, v/v)

Sources & evidence

ORD record
ord-7c9d2ec343084d8799b13fa52bdb9043
Source dataset
uspto-grants-2016_03
Patent number
US09290468B2

Reaction notes

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