4-Toluenesulfonyl chloride → 3-({2-chloro-4-[(E)-2-cyclopentyl-1-(5-methyl-6-oxo-1,6-dihydropyridin-2-yl)ethenyl]phenyl}sulfanyl)propyl 4-methylbenzenesulfonate

HRID 70591Notes

Reaction equation

HRID 70591 reaction equation
Cl.CN(C)C.[CH3:6][C:7]1[CH:12]=[CH:11][C:10]([S:13](Cl)(=[O:15])=[O:14])=[CH:9][CH:8]=1.[Cl:17][C:18]1[CH:19]=[C:20](/[C:29](/[C:36]2[NH:41][C:40](=[O:42])[C:39]([CH3:43])=[CH:38][CH:37]=2)=[CH:30]\[CH:31]2[CH2:35][CH2:34][CH2:33][CH2:32]2)[CH:21]=[CH:22][C:23]=1[S:24][CH2:25][CH2:26][CH2:27][OH:28].CN(C)CCN>C(Cl)(Cl)Cl.O.C(N(CC)CC)C>[CH3:6][C:7]1[CH:12]=[CH:11][C:10]([S:13]([O:28][CH2:27][CH2:26][CH2:25][S:24][C:23]2[CH:22]=[CH:21][C:20](/[C:29](/[C:36]3[NH:41][C:40](=[O:42])[C:39]([CH3:43])=[CH:38][CH:37]=3)=[CH:30]\[CH:31]3[CH2:35][CH2:34][CH2:33][CH2:32]3)=[CH:19][C:18]=2[Cl:17])(=[O:15])=[O:14])=[CH:9][CH:8]=1

Participants

8

Reactant 4

HCID 73974-Toluenesulfonyl chlorideHCID 66053N,N-DimethylethylenediamineHCID 10313079Trimethylamine HydrochlorideHCID 584526356-[(E)-1-{3-chloro-4-[(3-hydroxypropyl)sulfanyl]phenyl}-2-cyclopentylethenyl]-3-methylpyridin-2(1H)-one

Product 1

HCID 866580093-({2-chloro-4-[(E)-2-cyclopentyl-1-(5-methyl-6-oxo-1,6-dihydropyridin-2-yl)ethenyl]phenyl}sulfanyl)propyl 4-methylbenzenesulfonateYield 18%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6212ChloroformSolventHCID 8471TriethylamineSolvent

Procedure

Triethylamine (148 μL), trimethylamine hydrochloride (50 mg) and 4-methylbenzenesulfonyl chloride (74 mg) were sequentially added to a solution of 6-[(E)-1-{3-chloro-4-[(3-hydroxypropyl)sulfanyl]phenyl}-2-cyclopentylethenyl]-3-methylpyridin-2(1H)-one obtained in Example 1-22 (143 mg) in chloroform (5 mL) under ice-cooling, and the mixture was stirred at room temperature for one hour. Water and N,N-dimethylethylenediamine were added to the reaction solution, followed by extraction with chloroform. The organic layer was sequentially washed with 1 M hydrochloric acid and brine, dried over anhydrous magnesium sulfate and filtered. The solvent was then evaporated under reduced pressure. The residue was purified by silica gel chromatography (hexane:ethyl acetate=9:1→1:1) to give 3-({2-chloro-4-[(E)-2-cyclopentyl-1-(5-methyl-6-oxo-1,6-dihydropyridin-2-yl)ethenyl]phenyl}sulfanyl)propyl 4-methylbenzenesulfonate (33 mg, 18%) as a colorless amorphous.

Workup

  1. temperaturecooling
  2. extractionfollowed by extraction with chloroform
  3. washThe organic layer was sequentially washed with 1 M hydrochloric acid and brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customThe solvent was then evaporated under reduced pressure
  7. customThe residue was purified by silica gel chromatography (hexane:ethyl acetate=9:1→1:1)

Sources & evidence

ORD record
ord-89ee4b6c089143c485e83945cc23c6db
Source dataset
uspto-grants-2014_09
Patent number
US08822503B2

Reaction notes

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