Cesium carbonate → 2-[1-(Cyclopropylmethyl)-3-methyl-2,2-dioxido-1,3-dihydro-2,1,3-benzothiadiazol-5-yl]benzonitrile

HRID 515213

Reaktionsgleichung

Reaktionsgleichung von HRID 515213
Br[C:2]1[CH:17]=[CH:16][C:5]2[N:6]([CH2:12][CH:13]3[CH2:15][CH2:14]3)[S:7](=[O:11])(=[O:10])[N:8]([CH3:9])[C:4]=2[CH:3]=1.CC1(C)C(C)(C)OB([C:26]2[CH:33]=[CH:32][CH:31]=[CH:30][C:27]=2[C:28]#[N:29])O1.C(=O)([O-])[O-].[Cs+].[Cs+].O1CCOCC1>CO.C(P(C(C)(C)C)C(C)(C)C)(C)(C)C.C(P(C(C)(C)C)C(C)(C)C)(C)(C)C.[Pd].O>[CH:13]1([CH2:12][N:6]2[C:5]3[CH:16]=[CH:17][C:2]([C:26]4[CH:33]=[CH:32][CH:31]=[CH:30][C:27]=4[C:28]#[N:29])=[CH:3][C:4]=3[N:8]([CH3:9])[S:7]2(=[O:11])=[O:10])[CH2:15][CH2:14]1

Komponenten

8

Edukt 4

HCID 10796Cesium carbonateHCID 312751,4-DioxaneHCID 35702292-(2-Cyanophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 674107445-Bromo-1-(cyclopropylmethyl)-3-methyl-1,3-dihydro-2,1,3-benzothiadiazole 2,2-dioxide

Produkt 1

HCID 533802362-[1-(Cyclopropylmethyl)-3-methyl-2,2-dioxido-1,3-dihydro-2,1,3-benzothiadiazol-5-yl]benzonitrile

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 2734558Bis(tri-tert-butylphosphine)palladium(0)KatalysatorHCID 887MethanolLösungsmittelHCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

To a microwave vial was added 5-bromo-1-(cyclopropylmethyl)-3-methyl-1,3-dihydro-2,1,3-benzothiadiazole 2,2-dioxide (1-4) (0.074 g, 0.23 mmol), 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile (0.070 g, 0.30 mmol), cesium carbonate (0.15 g, 0.47 mmol), palladium bis(tri-tert-butylphosphine) (0.024 g, 0.047 mmol), dioxane (1 mL), and water (0.2 mL). The reaction mixture was then heated under microwave irradiation at 100° C. for 10 minutes. The crude reaction mixture was then allowed to cool to room temperature, diluted with methanol, then filtered and concentrated. Purification of crude reaction mixture by reverse phase chromatography (Waters Sunfire MSC18, 10% acetonitrile/0.1% trifluoroacetic acid/water→100% acetonitrile/0.1% trifluoroacetic acid/water) to give 2-[1-(cyclopropylmethyl)-3-methyl-2,2-dioxido-1,3-dihydro-2,1,3-benzothiadiazol-5-yl]benzonitrile (1-5). 1H NMR (400 MHz, CD3 OD): δ 7.82 (d, J=7.8 Hz, 1 H); 7.72 (t, J=7.7 Hz, 1 H); 7.61 (d, J=7.9 Hz, 1 H); 7.51 (t, J=7.7 Hz, 1 H); 7.22 (d, J=8.2 Hz, 1 H); 7.15-7.07 (m, 2H); 3.70 (d, J=6.8 Hz, 2 H); 3.31 (s, 3 H); 1.39-1.30 (m, 1 H); 0.66 (d, J=7.7 Hz, 2 H); 0.49 (d, J=5.1 Hz, 2 H). HRMS (M+H)+: observed=340.1114, calculated=340.1114.

Aufarbeitung

  1. customThe crude reaction mixture
  2. temperatureto cool to room temperature
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customPurification of crude
  6. customreaction mixture by reverse phase chromatography (Waters Sunfire MSC18, 10% acetonitrile/0.1% trifluoroacetic acid/water→100% acetonitrile/0.1% trifluoroacetic acid/water)

Quellen und Nachweise

ORD-Eintrag
ord-41a95e98bee941e2bb898733de405c0e
Quelldatensatz
uspto-grants-2015_08
Patentnummer
US09108937B2

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