1,1,3,3-Tetramethylguanidine → 2-(6-(4-(1-hydroxypropan-2-yl)piperazin-1-yl)pyridin-2-yl)-5,7-dimethoxyquinazolin-4(3H)-one

HRID 1519419

Reaktionsgleichung

Reaktionsgleichung von HRID 1519419
F[C:2]1[N:7]=[C:6]([C:8]2[NH:17][C:16](=[O:18])[C:15]3[C:10](=[CH:11][C:12]([O:21][CH3:22])=[CH:13][C:14]=3[O:19][CH3:20])[N:9]=2)[CH:5]=[CH:4][CH:3]=1.Cl.Cl.[N:25]1([CH:31]([CH3:34])[CH2:32][OH:33])[CH2:30][CH2:29][NH:28][CH2:27][CH2:26]1.CN(C)C(N(C)C)=N>CS(C)=O.O>[OH:33][CH2:32][CH:31]([N:25]1[CH2:30][CH2:29][N:28]([C:2]2[N:7]=[C:6]([C:8]3[NH:17][C:16](=[O:18])[C:15]4[C:10](=[CH:11][C:12]([O:21][CH3:22])=[CH:13][C:14]=4[O:19][CH3:20])[N:9]=3)[CH:5]=[CH:4][CH:3]=2)[CH2:27][CH2:26]1)[CH3:34]

Komponenten

6

Edukt 3

HCID 664601,1,3,3-TetramethylguanidineHCID 119720442-(Piperazin-1-yl)propan-1-ol dihydrochlorideHCID 1364081482-(6-fluoropyridin-2-yl)-5,7-dimethoxyquinazolin-4(3H)-one

Produkt 1

HCID 1362488362-(6-(4-(1-hydroxypropan-2-yl)piperazin-1-yl)pyridin-2-yl)-5,7-dimethoxyquinazolin-4(3H)-oneAusbeute 54,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 679Dimethyl SulfoxideLösungsmittelHCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

A mixture of 2-(6-fluoropyridin-2-yl)-5,7-dimethoxyquinazolin-4(3H)-one (0.202 g, 0.67 mmol), 2-(piperazin-1-yl)propan-1-ol dihydrochloride (0.292 g, 1.34 mmol) and 1,1,3,3-tetramethylguanidine (0.310 g, 2.69 mmol) in dry DMSO (1.5 mL) was heated at 85° C. for 6 h. After that time the reaction was cooled to rt, diluted with water (15 mL) and extracted with ethyl acetate (2×30 mL). The combined organic phase was washed with brine, dried over sodium sulfate, filtered and concentrated under reduced pressure. The product was purified by flash column chromatography (silica gel, 97:3 dichloromethane/methanol to 95:5 dichloromethane/methanol) to give 2-(6-(4-(1-hydroxypropan-2-yl)piperazin-1-yl)pyridin-2-yl)-5,7-dimethoxyquinazolin-4(3H)-one (0.155 g, 54%) as a yellow solid: mp 202-204° C.; 1H NMR (400 MHz, CDCl3) δ 10.30 (s, 1H), 7.87 (d, J=7.42 Hz, 1H), 7.64-7.72 (m, 1H), 6.79-6.88 (m, 2H) 6.49 (d, J=2.34 Hz, 1H) 3.99 (s, 3H), 3.94 (s, 3H), 3.61-3.72 (m, 4H), 3.38-3.52 (m, 2H), 2.89-2.99 (m, 1H), 2.78-2.88 (m, 2H), 2.54-2.64 (m, 2H), 0.97 (d, J=6.64 Hz, 3H); ESI MS m/z 426 [M+H]+.

Aufarbeitung

  1. temperatureAfter that time the reaction was cooled to rt
  2. extractionextracted with ethyl acetate (2×30 mL)
  3. washThe combined organic phase was washed with brine
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe product was purified by flash column chromatography (silica gel, 97:3 dichloromethane/methanol to 95:5 dichloromethane/methanol)

Quellen und Nachweise

ORD-Eintrag
ord-ed705a527b1044d5bbc8c7fd60b2497f
Quelldatensatz
uspto-grants-2015_07
Patentnummer
US09073878B2

Verknüpfte Notizen

Wird geladen…