1,1,1-Trimethoxybutane → tert-butyl 4-[(7-bromo-2-propyl-1H-imidazo[4,5-c]quinolin-1-yl)methyl]piperidine-1-carboxylate

HRID 1818193

Reaktionsgleichung

Reaktionsgleichung von HRID 1818193
[NH2:1][C:2]1[CH:3]=[N:4][C:5]2[C:10]([C:11]=1[NH:12][CH2:13][CH:14]1[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:16][CH2:15]1)=[CH:9][CH:8]=[C:7]([Br:27])[CH:6]=2.[C:28](OC)(OC)(OC)[CH2:29][CH2:30][CH3:31]>>[Br:27][C:7]1[CH:8]=[CH:9][C:10]2[C:11]3[N:12]([CH2:13][CH:14]4[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:24])([CH3:26])[CH3:25])=[O:21])[CH2:16][CH2:15]4)[C:28]([CH2:29][CH2:30][CH3:31])=[N:1][C:2]=3[CH:3]=[N:4][C:5]=2[CH:6]=1

Komponenten

3

Edukt 2

HCID 1235121,1,1-TrimethoxybutaneHCID 21984428Tert-butyl 4-[(3-amino-7-bromoquinolin-4-ylamino)methyl]piperidine-1-carboxylate

Produkt 1

HCID 21984032tert-butyl 4-[(7-bromo-2-propyl-1H-imidazo[4,5-c]quinolin-1-yl)methyl]piperidine-1-carboxylateAusbeute 77,9 %

Versuchsvorschrift

The method described in Part A of Examples 142-144 was used to treat tert-butyl 4-[(3-amino-7-bromoquinolin-4-ylamino)methyl]piperidine-1-carboxylate (15.0 g, 34.5 mmol) with trimethyl orthobutyrate (5.62 g, 37.9 mmol). After completion, the reaction mixture was concentrated under reduced pressure, and the residue was purified by flash column chromatography on silica gel (eluting with 95:5 chloroform:CMA) followed by recrystallization from ethyl acetate to provide 13.1 g of tert-butyl 4-[(7-bromo-2-propyl-1H-imidazo[4,5-c]quinolin-1-yl)methyl]piperidine-1-carboxylate as a white solid, mp 215-216° C.

Aufarbeitung

  1. concentrationAfter completion, the reaction mixture was concentrated under reduced pressure
  2. customthe residue was purified by flash column chromatography on silica gel (eluting with 95:5 chloroform:CMA)
  3. customfollowed by recrystallization from ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-f532e941020444f0a90e5545750eff9b
Quelldatensatz
uspto-grants-2009_10
Patentnummer
US07598382B2

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