Cesium carbonate → 6-Chloro-4'-(3-chlorophenyl)-2'-isopropenyl-2,3-dihydro-1'-[(tert-butoxycarbonyl) methyl]-2,6'-dioxo spiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilane

HRID 1728052Notes

Reaction equation

HRID 1728052 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:27])[C:10]3([CH:15]([C:16]4[CH:21]=[CH:20][CH:19]=[C:18]([Cl:22])[CH:17]=4)[CH2:14][C:13](=[O:23])[NH:12][CH:11]3[C:24]([CH3:26])=[CH2:25])[C:5]2=[CH:4][CH:3]=1.[CH3:28][O:29][CH:30]([Si:32]([CH3:35])([CH3:34])[CH3:33])[CH3:31].[C:36]([O:40][C:41](=[O:44])[CH2:42]Br)([CH3:39])([CH3:38])[CH3:37].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O>[Cl:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:27])[C:10]3([CH:15]([C:16]4[CH:21]=[CH:20][CH:19]=[C:18]([Cl:22])[CH:17]=4)[CH2:14][C:13](=[O:23])[N:12]([CH2:42][C:41]([O:40][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:44])[CH:11]3[C:24]([CH3:26])=[CH2:25])[C:5]2=[CH:4][CH:3]=1.[CH3:28][O:29][CH:30]([Si:32]([CH3:35])([CH3:34])[CH3:33])[CH3:31]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 79177tert-Butyl bromoacetateHCID 775803116-Chloro-4'-(3-chlorophenyl)-2'-isopropenyl-2,3-dihydro-2,6'-dioxo spiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilane

Product 1

HCID 775802646-Chloro-4'-(3-chlorophenyl)-2'-isopropenyl-2,3-dihydro-1'-[(tert-butoxycarbonyl) methyl]-2,6'-dioxo spiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilaneYield 79%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

In a manner similar to the method described in example 55c, racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2′-isopropenyl-2,3-dihydro-2,6′-dioxospiro[indole-3,3′-piperidine]-1-methoxyethyl trimethylsilane (3 g, 5.64 mmol) prepared in example 116a was reacted with bromo-acetic acid tert-butyl ester and cesium carbonate in N,N-dimethyl-formamide to give racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2′-isopropenyl-2,3-dihydro-1′-[(tert-butoxycarbonyl)methyl]-2,6′-dioxospiro[indole-3,3′-piperidine]-1-methoxyethyl trimethylsilane as a white foam (Yield: 2.98 g, 79%).

Sources & evidence

ORD record
ord-ae8cdc05a385499cbc27344c2c362520
Source dataset
uspto-grants-2009_02
Patent number
US07495007B2

Reaction notes

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