Trifluoroacetic acid → racemic (2'R,3R,4'S)-6-bromo-4'-(3-chlorophenyl)-2'-(1-methylene-propyl)-spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

HRID 1728095Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1728095
[Br:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:28])[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](=[CH2:27])[CH2:25][CH3:26])[C:5]2=[CH:4][CH:3]=1.COC([Si](C)(C)C)C.FC(F)(F)C(O)=O>ClCCl>[Br:1][C:2]1[CH:7]=[C:6]2[NH:8][C:9](=[O:28])[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](=[CH2:27])[CH2:25][CH3:26])[C:5]2=[CH:4][CH:3]=1

Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 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 trimethylsilane

Produkt 1

HCID 76567900racemic (2'R,3R,4'S)-6-bromo-4'-(3-chlorophenyl)-2'-(1-methylene-propyl)-spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dioneAusbeute 81,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To 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 (50 mg, 0.08 mmol) prepared in example 161b in dichloromethane (5 mL) was added trifluoroacetic acid (5 mL). The reaction mixture was stirred at room temperature for 0.5 h. After removing the solvent, the residue was dissolved in methanol (2 mL). To the resulting solution was added N,N′-diisopropylethylamine (1 mL). The reaction tube was then heated at 135 ° C. for 20 min. The reaction mixture was concentrated and the residue was purified by Prep-HPLC to obtain racemic (2′R,3R,4′S)-6-bromo-4′-(3-chlorophenyl)-2′-(1-methylene-propyl)-spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione as solid (30 mg).

Aufarbeitung

  1. customAfter removing the solvent
  2. dissolutionthe residue was dissolved in methanol (2 mL)
  3. additionTo the resulting solution was added N,N′-diisopropylethylamine (1 mL)
  4. temperatureThe reaction tube was then heated at 135 ° C. for 20 min
  5. concentrationThe reaction mixture was concentrated
  6. customthe residue was purified by Prep-HPLC

Quellen und Nachweise

ORD-Eintrag
ord-30d2b1e0e3d341169aeacc8ca961823c
Quelldatensatz
uspto-grants-2009_02
Patentnummer
US07495007B2

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