Water → 6-chloro-4'-[5-chloro-2-(1-hydroxycarbonyl-1-propyl-butoxy)-phenyl]-2'-(5-chloro-2-methyl-phenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

HRID 504587Notes

Reaction equation

HRID 504587 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:45])[C:10]3([CH:15]([C:16]4[CH:21]=[C:20]([Cl:22])[CH:19]=[CH:18][C:17]=4[O:23][C:24]([C:31]([O:33]CC)=[O:32])([CH2:28][CH2:29][CH3:30])[CH2:25][CH2:26][CH3:27])[CH2:14][C:13](=[O:36])[NH:12][CH:11]3[C:37]3[CH:42]=[C:41]([Cl:43])[CH:40]=[CH:39][C:38]=3[CH3:44])[C:5]2=[CH:4][CH:3]=1.O[Li].O.O>CO>[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:45])[C:10]3([CH:15]([C:16]4[CH:21]=[C:20]([Cl:22])[CH:19]=[CH:18][C:17]=4[O:23][C:24]([C:31]([OH:33])=[O:32])([CH2:28][CH2:29][CH3:30])[CH2:25][CH2:26][CH3:27])[CH2:14][C:13](=[O:36])[NH:12][CH:11]3[C:37]3[CH:42]=[C:41]([Cl:43])[CH:40]=[CH:39][C:38]=3[CH3:44])[C:5]2=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 962WaterHCID 168937Lithium hydroxide, monohydrateHCID 866320996-chloro-4'-[5-chloro-2-(1-ethoxycarbonyl-1-propyl-butoxy)-phenyl]-2'-(5-chloro-2-methyl-phenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

Product 1

HCID 866321006-chloro-4'-[5-chloro-2-(1-hydroxycarbonyl-1-propyl-butoxy)-phenyl]-2'-(5-chloro-2-methyl-phenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dioneYield 83.3%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A mixture of racemic (2′S,3S,4′R)-6-chloro-4′-[5-chloro-2-(1-ethoxycarbonyl-1-propyl-butoxy)-phenyl]-2′-(5-chloro-2-methyl-phenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (280 mg, 0.41 mmol), LiOH.H2O (1 g, 24.6 mmol), H2O (12 mL) and methanol (38 mL) was refluxed for 2 h. After cooled to room temperature, the solution was concentrated and then the mixture was acidified to “pH” 1-2 by addition of concentrated HCl solution and then extracted with EtOAc. The combined organic layers were washed with water and brine, dried over anhydrous Na2SO4 and concentrated to give the title compound as a light yellow solid (220 mg).

Workup

  1. temperaturewas refluxed for 2 h
  2. concentrationthe solution was concentrated
  3. additionby addition of concentrated HCl solution
  4. extractionextracted with EtOAc
  5. washThe combined organic layers were washed with water and brine
  6. dry with materialdried over anhydrous Na2SO4
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-254f5a35874e44949bd33217d7d660ca
Source dataset
uspto-grants-2010_08
Patent number
US07776875B2

Reaction notes

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