Acetic Anhydride → racemic (2'S,3S,4'R)-1-acetyl-6-chloro-4'-[5-chloro-2-(1-ethyl-1-methanesulfonylaminocarbonyl-propoxy)-phenyl]-2'-(5-fluoro-2-methyl-phenyl)-spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

HRID 658917Notes

Reaction equation

HRID 658917 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:33][C:34]([CH2:44][CH3:45])([CH2:42][CH3:43])[C:35]([NH:37][S:38]([CH3:41])(=[O:40])=[O:39])=[O:36])=[C:6]([CH:8]2[CH2:13][C:12](=[O:14])[NH:11][CH:10]([C:15]3[CH:20]=[C:19]([F:21])[CH:18]=[CH:17][C:16]=3[CH3:22])[C:9]32[C:30]2[C:25](=[CH:26][C:27]([Cl:31])=[CH:28][CH:29]=2)[NH:24][C:23]3=[O:32])[CH:7]=1.[C:46](OC(=O)C)(=[O:48])[CH3:47]>C(Cl)Cl.CN(C1C=CN=CC=1)C>[C:46]([N:24]1[C:25]2[C:30](=[CH:29][CH:28]=[C:27]([Cl:31])[CH:26]=2)[C:9]2([CH:8]([C:6]3[CH:7]=[C:2]([Cl:1])[CH:3]=[CH:4][C:5]=3[O:33][C:34]([CH2:44][CH3:45])([CH2:42][CH3:43])[C:35]([NH:37][S:38]([CH3:41])(=[O:40])=[O:39])=[O:36])[CH2:13][C:12](=[O:14])[NH:11][CH:10]2[C:15]2[CH:20]=[C:19]([F:21])[CH:18]=[CH:17][C:16]=2[CH3:22])[C:23]1=[O:32])(=[O:48])[CH3:47]

Participants

5

Reactant 2

HCID 7918Acetic AnhydrideHCID 749286006-chloro-4'-[5-chloro-2-(1-ethyl-1-methanesulfonylaminocarbonyl-propoxy)-phenyl]-2'-(5-fluoro-2-methyl-phenyl)-spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

Product 1

HCID 66776508racemic (2'S,3S,4'R)-1-acetyl-6-chloro-4'-[5-chloro-2-(1-ethyl-1-methanesulfonylaminocarbonyl-propoxy)-phenyl]-2'-(5-fluoro-2-methyl-phenyl)-spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dioneYield 78.3%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

At room temperature, to a mixture of racemic (2′S, 3S, 4′R)-4′-[5-chloro-2-(2-methanesulfonylamino-1,1-diethyl-2-oxo-ethoxy)-phenyl]-6-chloro-2′-(5-fluoro-2-methyl-phenyl)-spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (540 mg, 0.8 mmol) and acetic anhydride (98 mg, 0.96 mmol) in DCM (20 mL) was added DMAP (10 mg, 0.08 mmol) slowly. After the mixture was stirred for 2 h, the solution was washed by 0.5N HCl solution twice, dried over anhydrous Na2SO4 and concentrated. The residue was purified by flash column chromatography to give the title compound as a white solid (450 mg).

Workup

  1. washthe solution was washed by 0.5N HCl solution twice
  2. dry with materialdried over anhydrous Na2SO4
  3. concentrationconcentrated
  4. customThe residue was purified by flash column chromatography

Sources & evidence

ORD record
ord-2781ad8660b248f29b2936b7957bfbbd
Source dataset
uspto-grants-2011_12
Patent number
US08076482B2

Reaction notes

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