1-(2-Methylphenyl)-3-trimethylsilyoxy-2-aza-1,3-butadiene → racemic (2'R,3R,4'S)-6-chloro-4'-(3-chlorophenyl)-2,3-dihydro-2'-(2-methylphenyl)-2,6'-dioxo spiro[indole-3,3'-piperidine]-1-carboxylic acid ethyl ester

HRID 1727979Notes

Reaction equation

HRID 1727979 reaction equation
[CH2:1]([O:3][C:4]([N:6]1[C:14]2[C:9](=[CH:10][CH:11]=[C:12]([Cl:15])[CH:13]=2)/[C:8](=[CH:16]/[C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([Cl:23])[CH:18]=2)/[C:7]1=[O:24])=[O:5])[CH3:2].[CH3:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=1[CH:32]=[N:33][C:34]([O:36][Si](C)(C)C)=[CH2:35]>C1(C)C=CC=CC=1>[CH2:1]([O:3][C:4]([N:6]1[C:14]2[C:9](=[CH:10][CH:11]=[C:12]([Cl:15])[CH:13]=2)[C:8]2([CH:16]([C:17]3[CH:22]=[CH:21][CH:20]=[C:19]([Cl:23])[CH:18]=3)[CH2:35][C:34](=[O:36])[NH:33][CH:32]2[C:27]2[CH:28]=[CH:29][CH:30]=[CH:31][C:26]=2[CH3:25])[C:7]1=[O:24])=[O:5])[CH3:2]

Participants

4

Reactant 2

HCID 675412941-(2-Methylphenyl)-3-trimethylsilyoxy-2-aza-1,3-butadieneHCID 86615084Z-6-chloro-3-(3-chloro-benzylidene)-2-oxo-2,3-dihydro-indole-1-carboxylic acid ethyl ester

Product 1

HCID 91062289racemic (2'R,3R,4'S)-6-chloro-4'-(3-chlorophenyl)-2,3-dihydro-2'-(2-methylphenyl)-2,6'-dioxo spiro[indole-3,3'-piperidine]-1-carboxylic acid ethyl esterYield 87%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

In a manner similar to the method described in example 4c, E/Z-6-chloro-3-(3-chloro-benzylidene)-2-oxo-2,3-dihydro-indole-1-carboxylic acid ethyl ester (0.32 g, 0.88 mmol) prepared in example 4b was reacted with 1-(2-methylphenyl)-3-trimethylsilyoxy-2-aza-1,3-butadiene (2.4 g, 1.71 mmol) prepared in example 17a, in toluene to give racemic (2′R,3R,4′S)-6-chloro-4′-(3-chlorophenyl)-2,3-dihydro-2′-(2-methylphenyl)-2,6′-dioxospiro[indole-3,3′-piperidine]-1-carboxylic acid ethyl ester (Yield 0.4 g, 87%).

Sources & evidence

ORD record
ord-49d6a66e8be846a892d513d139ffabd5
Source dataset
uspto-grants-2009_02
Patent number
US07495007B2

Reaction notes

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