Triphenylphosphine → (R)-tert-butyl 2-((S)-(4-chloro-3-fluorophenyl)(4-(2-(methylthio)pyrimidin-4-yl)-2-oxopyridin-1(2H)-yl)methyl)pyrrolidine-1-carboxylate

HRID 2365825Notes

Reaction equation

HRID 2365825 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8](O)[C@H:9]2[CH2:13][CH2:12][CH2:11][N:10]2[C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])=[CH:4][C:3]=1[F:22].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O.[CH3:56][S:57][C:58]1[N:63]=[C:62]([C:64]2[CH:69]=[CH:68][NH:67][C:66](=[O:70])[CH:65]=2)[CH:61]=[CH:60][N:59]=1>C1COCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@H:8]([N:67]2[CH:68]=[CH:69][C:64]([C:62]3[CH:61]=[CH:60][N:59]=[C:58]([S:57][CH3:56])[N:63]=3)=[CH:65][C:66]2=[O:70])[C@H:9]2[CH2:13][CH2:12][CH2:11][N:10]2[C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])=[CH:4][C:3]=1[F:22]

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 717270054-(2-(methylthio)pyrimidin-4-yl)pyridin-2(1H)-oneHCID 86696676(R)-tert-butyl 2-((R)-(4-chloro-3-fluorophenyl)(hydroxy)methyl)pyrrolidine-1-carboxylate

Product 1

HCID 86696677(R)-tert-butyl 2-((S)-(4-chloro-3-fluorophenyl)(4-(2-(methylthio)pyrimidin-4-yl)-2-oxopyridin-1(2H)-yl)methyl)pyrrolidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of (R)-tert-butyl 2-((R)-(4-chloro-3-fluorophenyl)(hydroxy)methyl)pyrrolidine-1-carboxylate (0.662 g, 2.01 mmol) and triphenylphosphine (0.658 g, 2.51 mmol) in THF (40 mL) was placed in an ice bath, and diisopropyl azodicarboxylate (0.518 mL, 2.51 mmol) was added. The cold bath was removed after 10 minutes, and the reaction mixture was stirred at room temperature for 10 minutes. 4-(2-(Methylthio)pyrimidin-4-yl)pyridin-2(1H)-one (0.22 g, 1.00 mmol) was added, and the reaction was left at room temperature for 1 hour. The reaction mixture was concentrated, and the crude product was purified via column chromatography, eluting with hexanes/ethyl acetate (1:1) to give (R)-tert-butyl 2-((S)-(4-chloro-3-fluorophenyl)(4-(2-(methylthio)pyrimidin-4-yl)-2-oxopyridin-1(2H)-yl)methyl)pyrrolidine-1-carboxylate (contaminated with large amounts of PPh3O). m/z (APCI-pos) (M+1)-Boc=431.2, 433.2.

Workup

  1. customThe cold bath was removed after 10 minutes
  2. waitthe reaction was left at room temperature for 1 hour
  3. concentrationThe reaction mixture was concentrated
  4. customthe crude product was purified via column chromatography
  5. washeluting with hexanes/ethyl acetate (1:1)

Sources & evidence

ORD record
ord-26da1038b8864317b9088d072dee6e36
Source dataset
uspto-grants-2014_04
Patent number
US08697715B2

Reaction notes

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