Diiodomethane → racemic (2'R,3R,4'S)-6-bromo-4'-(3-chlorophenyl)-2'-(1-ethyl-cyclopropyl)-2,3-dihydro-2,6'-dioxo spiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilane

HRID 1728096Notes

Reaction equation

HRID 1728096 reaction equation
C(I)I.[Zn]([CH2:7][CH3:8])CC.[Br:9][C:10]1[CH:15]=[C:14]2[NH:16][C:17](=[O:36])[C:18]3([CH:23]([C:24]4[CH:29]=[CH:28][CH:27]=[C:26]([Cl:30])[CH:25]=4)[CH2:22][C:21](=[O:31])[NH:20][CH:19]3[C:32](=C)[CH2:33][CH3:34])[C:13]2=[CH:12][CH:11]=1.[CH3:37][O:38][CH:39]([Si:41]([CH3:44])([CH3:43])[CH3:42])[CH3:40]>C1(C)C=CC=CC=1>[Br:9][C:10]1[CH:15]=[C:14]2[NH:16][C:17](=[O:36])[C:18]3([CH:23]([C:24]4[CH:29]=[CH:28][CH:27]=[C:26]([Cl:30])[CH:25]=4)[CH2:22][C:21](=[O:31])[NH:20][CH:19]3[C:32]3([CH2:7][CH3:8])[CH2:34][CH2:33]3)[C:13]2=[CH:12][CH:11]=1.[CH3:37][O:38][CH:39]([Si:41]([CH3:44])([CH3:43])[CH3:42])[CH3:40]

Participants

5

Reactant 3

HCID 6346DiiodomethaneHCID 77581292racemic (2'R,3R,4'S)-6-bromo-4'-(3-chlorophenyl)-2'-(1-methylene-propyl)-2,3-dihydro-2,6'-dioxo spiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilaneHCID 178418750HCID 178418750, compound

Product 1

HCID 77580691racemic (2'R,3R,4'S)-6-bromo-4'-(3-chlorophenyl)-2'-(1-ethyl-cyclopropyl)-2,3-dihydro-2,6'-dioxo spiro[indole-3,3'-piperidine] 1-methoxyethyl trimethylsilane

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent2×

Procedure

CH2I2 (1.2 g, 4.6 mmol) was dissolved in dry toluene (5 mL) at 0° C. After stirred for 10 min under Argon, Et2Zn (1 M in THF, 3.3 mL, 3.67 mmol) was added. After stirred for 15 min, a solution of racemic (2′R,3R,4′S)-6-bromo-4′-(3-chlorophenyl)-2′-(1-methylene-propyl)-2,3-dihydro-2,6′-dioxospiro[indole-3,3′-piperidine]-1-methoxyethyl trimethylsilane (270 mg, 0.46 mmol) prepared in example 161b in dry toluene (10 mL) was added. After stirred at room temperature for 3 h, the reaction was quenched with saturated NH4Cl (20 mL). The aqueous layer was extracted with EtOAc. The combined organic layer was dried over Na2SO4, concentrated, the residue, was used for next step without further purification.

Workup

  1. stirringAfter stirred for 15 min
  2. stirringAfter stirred at room temperature for 3 h
  3. customthe reaction was quenched with saturated NH4Cl (20 mL)
  4. extractionThe aqueous layer was extracted with EtOAc
  5. dry with materialThe combined organic layer was dried over Na2SO4
  6. concentrationconcentrated
  7. customthe residue, was used for next step without further purification

Sources & evidence

ORD record
ord-0c875f8c23da4377abdddbc0ebabd06d
Source dataset
uspto-grants-2009_02
Patent number
US07495007B2

Reaction notes

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