Triethylamine → Ethyl 4-((S)-(2,4-difluorophenyl)((S)-1,1-dimethylethylsulfinamido)methyl)phenyl(methyl)phosphinate

HRID 1525270Notes

Reaction equation

HRID 1525270 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]([C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][C:17]=2[F:23])[NH:9][S@:10]([C:12]([CH3:15])([CH3:14])[CH3:13])=[O:11])=[CH:4][CH:3]=1.[CH3:24][PH:25]([O-])([O-:29])[O:26][CH2:27][CH3:28].CCN(CC)CC>C1COCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[F:23][C:17]1[CH:18]=[C:19]([F:22])[CH:20]=[CH:21][C:16]=1[C@@H:8]([NH:9][S@:10]([C:12]([CH3:15])([CH3:14])[CH3:13])=[O:11])[C:5]1[CH:6]=[CH:7][C:2]([P:25]([CH3:24])(=[O:29])[O:26][CH2:27][CH3:28])=[CH:3][CH:4]=1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 89462687(S)-N-((S)-(4-bromophenyl)(2,4-difluorophenyl)methyl)-2-methylpropane-2-sulfinamide2×HCID 178476778HCID 178476778, compound

Product 1

HCID 89472304Ethyl 4-((S)-(2,4-difluorophenyl)((S)-1,1-dimethylethylsulfinamido)methyl)phenyl(methyl)phosphinateYield 44%

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 8028TetrahydrofuranSolvent

Procedure

To (S)—N—((S)-(4-bromophenyl)(2,4-difluorophenyl)methyl)-2-methylpropane-2-sulfinamide, 21-b, (2 g, 5 mmol), ethyl methylphosphite (1.08 g, 10 mmol) and Et3N (1.25 g, 12.5 mmol) in THF (20 ml) was added PdCl2(dppf) (360 mg). The mixture was allowed to stir overnight at reflux. The mixture was filtered and the filtrate was concentrated under vacuum. The residue was taken into ethyl acetate and washed with brine. The organic layer was concentrated under vacuum and the residue was purified over silica gel (dichloromethane:methanol=50/1) to provide the product, 21-c, (950 mg, 44%).

Workup

  1. temperatureat reflux
  2. filtrationThe mixture was filtered
  3. concentrationthe filtrate was concentrated under vacuum
  4. washwashed with brine
  5. concentrationThe organic layer was concentrated under vacuum
  6. customthe residue was purified over silica gel (dichloromethane:methanol=50/1)

Sources & evidence

ORD record
ord-87f739a1c35e47b4b1fb5c1ff75b438c
Source dataset
uspto-grants-2015_07
Patent number
US09079930B2

Reaction notes

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