Lithium diisopropylamide → methyl 2-(tert-butoxy)-2-(4-(4-chlorophenyl)-6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-5-yl)acetate

HRID 1473191Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1473191
C([N:8]1[C:12]2[C:13](=[O:35])[N:14]([CH3:34])[C:15]([CH:24]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])[C:25]([O:27][CH3:28])=[O:26])=[C:16]([C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)[C:11]=2[CH:10]=[CH:9]1)C1C=CC=CC=1.[Li+].CC([N-]C(C)C)C>O1CCCC1>[C:30]([O:29][CH:24]([C:15]1[N:14]([CH3:34])[C:13](=[O:35])[C:12]2[NH:8][CH:9]=[CH:10][C:11]=2[C:16]=1[C:17]1[CH:18]=[CH:19][C:20]([Cl:23])=[CH:21][CH:22]=1)[C:25]([O:27][CH3:28])=[O:26])([CH3:33])([CH3:31])[CH3:32]

Komponenten

4

Edukt 2

HCID 2724682Lithium diisopropylamideHCID 89462902methyl 2-(1-benzyl-4-(4-chlorophenyl)-6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-5-yl)-2-(tert-butoxy)acetate

Produkt 1

HCID 89463134methyl 2-(tert-butoxy)-2-(4-(4-chlorophenyl)-6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-5-yl)acetateAusbeute 63 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

A 0° C. solution of methyl 2-(1-benzyl-4-(4-chlorophenyl)-6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-5-yl)-2-(tert-butoxy)acetate (400 mg, 0.811 mmol) in Tetrahydrofuran (THF) (6 mL) was slowly treated with LDA (2.0 M solution in tetrahydrofuran/heptanes/ethylbenzene) (0.811 mL, 1.623 mmol) and the mixture was allowed to stir at 0° C. for 20 min. The mixture was quenched with HCl (1M) and extracted with Ethyl acetate. The combined extracts were washed with brine, dried over Na2SO4, filtered and concentrated. The residue was purified on silica gel (0-10% Methanol/DCM) to afford methyl 2-(tert-butoxy)-2-(4-(4-chlorophenyl)-6-methyl-7-oxo-6,7-dihydro-1H-pyrrolo[2,3-c]pyridin-5-yl)acetate (205 mg, 0.511 mmol, 63% yield) as a pale yellow solid. 1H NMR (400 MHz, CHLOROFORM-d) ppm 9.46 (s, 1H), 7.50-7.46 (m, 2H), 7.45-7.38 (m, 2H), 7.21-7.19 (m, 1H), 6.10-6.05 (m, 1H), 3.84-3.82 (s, 3H), 3.73-3.71 (s, 3H), 0.96 (s, 9H); LCMS (m/z) ES+=403 (M+1).

Aufarbeitung

  1. customThe mixture was quenched with HCl (1M)
  2. extractionextracted with Ethyl acetate
  3. washThe combined extracts were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified on silica gel (0-10% Methanol/DCM)

Quellen und Nachweise

ORD-Eintrag
ord-d20fbdbeaa6f4ff8934a370997fd0892
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US09012642B2

Notizen zur Reaktion

Wird geladen…