Potassium Carbonate → tert-Butyl 4-(2-(1-(5-propylpyrimidin-2-yl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 1429525Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1429525
Br[C:2]1[CH:26]=[CH:25][C:5]2[N:6]=[C:7]([O:9][CH:10]3[CH2:15][CH2:14][N:13]([C:16]4[N:21]=[CH:20][C:19]([CH2:22][CH2:23][CH3:24])=[CH:18][N:17]=4)[CH2:12][CH2:11]3)[S:8][C:4]=2[CH:3]=1.CC1(C)C(C)(C)OB([C:35]2[CH2:40][CH2:39][N:38]([C:41]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])=[O:42])[CH2:37][CH:36]=2)O1.C([O-])([O-])=O.[K+].[K+]>O1CCOCC1.O.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>[CH2:22]([C:19]1[CH:18]=[N:17][C:16]([N:13]2[CH2:14][CH2:15][CH:10]([O:9][C:7]3[S:8][C:4]4[CH:3]=[C:2]([C:35]5[CH2:40][CH2:39][N:38]([C:41]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])=[O:42])[CH2:37][CH:36]=5)[CH:26]=[CH:25][C:5]=4[N:6]=3)[CH2:11][CH2:12]2)=[N:21][CH:20]=1)[CH2:23][CH3:24]

Komponenten

7

Edukt 3

HCID 11430Potassium CarbonateHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 674627936-Bromo-2-(1-(5-propylpyrimidin-2-yl)piperidin-4-yloxy)benzo[d]thiazole

Produkt 1

HCID 67464591tert-Butyl 4-(2-(1-(5-propylpyrimidin-2-yl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylateAusbeute 71 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittel2×HCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

To a degassed solution of 6-bromo-2-(1-(5-propylpyrimidin-2-yl)piperidin-4-yloxy)benzo[d]thiazole (190 mg, 0.438 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (163 mg, 0.526 mmol) and K2CO3 (182 mg, 1.315 mmol) in dioxane (3 mL) and water (1 mL) was added Pd(Ph3P)4 (25.3 mg, 0.022 mmol). Upon completion of addition, the reaction mixture was heated to 100° C., where it stirred overnight. At the conclusion of this period, the reaction mixture was cooled to rt, diluted with water and then extracted with CH2Cl2 (3×10 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated to yield a residue. The residue was purified by column chromatography (silica gel, hexanes-EtOAc gradient 0 to 50% EtOAc) to afford Compound 1D as a white solid (166 mg, 0.310 mmol, 71% yield). 1H NMR (500 MHz, chloroform-d) δ ppm 8.17 (2H, s), 7.62-7.65 (1H, m), 7.62 (1H, s), 7.40 (1H, dd, J=8.5, 1.9 Hz), 6.00-6.09 (1H, m), 5.42-5.49 (1H, m), 4.23 (2H, ddd, J=13.3, 6.7, 3.9 Hz), 4.05-4.13 (2H, m), 3.63-3.76 (4H, m), 2.53-2.61 (2H, m), 2.41 (2H, t, J=7.6 Hz), 2.14-2.23 (2H, m), 1.95 (2H, dddd, J=12.8, 8.5, 8.4, 3.9 Hz), 1.57-1.64 (2H, m), 1.51 (9H, s), 0.95 (3H, t, J=7.3 Hz).

Aufarbeitung

  1. additionUpon completion of addition
  2. temperatureAt the conclusion of this period, the reaction mixture was cooled to rt
  3. extractionextracted with CH2Cl2 (3×10 mL)
  4. dry with materialThe combined organic layers were dried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customto yield a residue
  8. customThe residue was purified by column chromatography (silica gel, hexanes-EtOAc gradient 0 to 50% EtOAc)

Quellen und Nachweise

ORD-Eintrag
ord-42629acb2866459d86a846ef2be5b1e6
Quelldatensatz
uspto-grants-2015_01
Patentnummer
US08940716B2

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