Potassium Carbonate → tert-butyl 5-(5-(methylthio)-1,3,4-thiadiazol-2-yl)-3-(6-morpholinopyridin-2-yl)-1H-indole-1-carboxylate

HRID 634156Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 634156
[O:1]1[CH2:6][CH2:5][N:4]([C:7]2[N:12]=[C:11]([C:13]3[C:21]4[C:16](=[CH:17][CH:18]=[C:19](B5OC(C)(C)C(C)(C)O5)[CH:20]=4)[N:15]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH:14]=3)[CH:10]=[CH:9][CH:8]=2)[CH2:3][CH2:2]1.Br[C:39]1[S:40][C:41]([S:44][CH3:45])=[N:42][N:43]=1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.C(Cl)Cl.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:45][S:44][C:41]1[S:40][C:39]([C:19]2[CH:20]=[C:21]3[C:16](=[CH:17][CH:18]=2)[N:15]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH:14]=[C:13]3[C:11]2[CH:10]=[CH:9][CH:8]=[C:7]([N:4]3[CH2:3][CH2:2][O:1][CH2:6][CH2:5]3)[N:12]=2)=[N:43][N:42]=1

Komponenten

7

Edukt 3

HCID 11430Potassium CarbonateHCID 222696212-Bromo-5-(methylsulfanyl)-1,3,4-thiadiazoleHCID 68328848tert-butyl 3-(6-morpholinopyridin-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylate

Produkt 1

HCID 68327982tert-butyl 5-(5-(methylthio)-1,3,4-thiadiazol-2-yl)-3-(6-morpholinopyridin-2-yl)-1H-indole-1-carboxylateAusbeute 47,1 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 6344DichloromethaneLösungsmittelHCID 218864351,4-Dioxane--water (1/1)Lösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A glass microwave reaction vessel was charged with tert-butyl 3-(6-morpholinopyridin-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylate (1.20 g, 2.374 mmol) and 2-bromo-5-(methylthio)-1,3,4-thiadiazole (1.002 g, 4.75 mmol) in p-dioxane/H2O (4:1, 15 mL) followed by potassium carbonate (0.984 g, 7.12 mmol, Aldrich) and Pd(PPh3)4 (0.137 g, 0.119 mmol, Strem). The reaction was stirred and heated in an Initiator microwave reactor (Personal Chemistry, Biotage AB, Inc., Uppsala, Sweden) at 100° C. for 2 h. The mixture was diluted with DCM (150 mL) and washed with H2O. The organic layer was dried, filtered and concentrated. The residue was purified with silica gel chromatography (eluting with 0-18% EtOAc in DCM) to give tert-butyl 5-(5-(methylthio)-1,3,4-thiadiazol-2-yl)-3-(6-morpholinopyridin-2-yl)-1H-indole-1-carboxylate (570 mg, 1.118 mmol, 47.1%) as a yellow solid. MS (ESI, pos. ion) m/z: 510 (M+1); 1H NMR (400 MHz, CDCl3) δ ppm 8.91 (1H, s), 8.17-8.32 (2H, m), 7.98 (1H, dd, J=8.7, 1.7 Hz), 7.65 (1H, t, J=8.0 Hz), 7.18 (1H, d, J=7.4 Hz), 6.70 (1H, d, J=8.4 Hz), 3.92-4.01 (4H, m), 3.68-3.77 (4H, m), 2.84 (3H, s), 1.72 (9H, s).

Aufarbeitung

  1. customA glass microwave reaction vessel
  2. washwashed with H2O
  3. customThe organic layer was dried
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified with silica gel chromatography (eluting with 0-18% EtOAc in DCM)

Quellen und Nachweise

ORD-Eintrag
ord-72731119dab5465da98cdbfbe1a87e2d
Quelldatensatz
uspto-grants-2016_04
Patentnummer
US09321756B2

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