(Diethylamino)sulfur trifluoride → Methyl 4-[3-(3-chloro-6-methoxyquinolin-4-yl)-3-(r,s)-fluoropropyl]-1-[2-(2,5-difluorophenylthio)ethyl]piperidine-4-carboxylate

HRID 395010Notes

Reaction equation

HRID 395010 reaction equation
C(N(S(F)(F)[F:7])CC)C.[Cl:10][C:11]1[CH:12]=[N:13][C:14]2[C:19]([C:20]=1[CH:21](O)[CH2:22][CH2:23][C:24]1([C:41]([O:43][CH3:44])=[O:42])[CH2:29][CH2:28][N:27]([CH2:30][CH2:31][S:32][C:33]3[CH:38]=[C:37]([F:39])[CH:36]=[CH:35][C:34]=3[F:40])[CH2:26][CH2:25]1)=[CH:18][C:17]([O:46][CH3:47])=[CH:16][CH:15]=2.C(=O)([O-])O.[Na+]>ClCCl>[Cl:10][C:11]1[CH:12]=[N:13][C:14]2[C:19]([C:20]=1[CH:21]([F:7])[CH2:22][CH2:23][C:24]1([C:41]([O:43][CH3:44])=[O:42])[CH2:25][CH2:26][N:27]([CH2:30][CH2:31][S:32][C:33]3[CH:38]=[C:37]([F:39])[CH:36]=[CH:35][C:34]=3[F:40])[CH2:28][CH2:29]1)=[CH:18][C:17]([O:46][CH3:47])=[CH:16][CH:15]=2

Participants

5

Reactant 3

HCID 123472(Diethylamino)sulfur trifluorideHCID 516892Sodium BicarbonateHCID 22469786Methyl 4-[3-(3-chloro-6-methoxyquinolin-4-yl)-3-(r,s)-hydroxypropyl]-1-[2-(2,5-difluorophenylthio)ethyl]piperidine-4-carboxylate

Product 1

HCID 22468945Methyl 4-[3-(3-chloro-6-methoxyquinolin-4-yl)-3-(r,s)-fluoropropyl]-1-[2-(2,5-difluorophenylthio)ethyl]piperidine-4-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
5 °C

Procedure

0.1 cm3 of diethylaminosulfur trifluoride was added to a solution of 0.25 g of methyl 4-[3-(3-chloro-6-methoxyquinolin-4-yl)-3-(R,S)-hydroxypropyl]-1-[2-(2,5-difluorophenylthio)ethyl]piperidine-4-carboxylate in 10 cm3 of dichloromethane, with stirring and under an inert atmosphere, at a temperature in the region of 5° C. After stirring for 7 hours at a temperature in the region of 20° C., saturated sodium hydrogen carbonate solution was added to the reaction mixture. The aqueous phase was extracted with dichloromethane. The organic phase was dried over magnesium sulfate, filtered and then concentrated to dryness under reduced pressure (2 kPa) at a temperature in the region of 40° C. The residue obtained was purified by chromatography under atmospheric pressure, on a column of silica gel (particle size 70-200μ; mass: 15 g), eluting with 60 cm3 of dichloromethane, then with 45 cm3 of a mixture of ethyl acetate/dichloromethane (1/9 by volume), then with 30 cm3 of a mixture of ethyl acetate/dichloromethane (2/8 by volume) and then with 210 cm3 of a mixture of ethyl acetate/dichloromethane (3/7 by volume) and then with ethyl acetate. Fractions 24 to 26 were combined and then concentrated to dryness according to the same conditions as above. 0.08 g of methyl 4-[3-(3-chloro-6-methoxyquinolin-4-yl)-3-(R,S)-fluoropropyl]-1-[2-(2,5-difluorophenylthio)ethyl]piperidine-4-carboxylate was obtained in the form of a thick yellow oil.

Workup

  1. additionwas added to the reaction mixture
  2. extractionThe aqueous phase was extracted with dichloromethane
  3. dry with materialThe organic phase was dried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated to dryness under reduced pressure (2 kPa) at a temperature in the region of 40° C
  6. customThe residue obtained
  7. customwas purified by chromatography under atmospheric pressure, on a column of silica gel (particle size 70-200μ; mass: 15 g)
  8. washeluting with 60 cm3 of dichloromethane
  9. concentrationconcentrated to dryness

Sources & evidence

ORD record
ord-bcc25d0c2d8b419ba0b44c2e743ae50b
Source dataset
uspto-grants-2003_08
Patent number
US06603005B2

Reaction notes

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