Lithium Chloride → HCID 86700382, Verbindung

HRID 879558Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 879558
Br[C:2]1[N:3]=[C:4]([C:8]2[CH:9]=[C:10]3[C:14](=[CH:15][CH:16]=2)[N:13]([CH3:17])[N:12]=[CH:11]3)[N:5]([CH3:7])[CH:6]=1.[Li+].[Cl-].Br[C:21]1[S:22][C:23]2[C:29]([C:30]3[CH:35]=[CH:34][C:33]([Cl:36])=[CH:32][CH:31]=3)=[C:28]([C@H:37]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])[C:38]([O:40][CH2:41][CH3:42])=[O:39])[C:27]([CH3:48])=[CH:26][C:24]=2[N:25]=1>O1CCOCC1.CCOC(C)=O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.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>[C:44]([O:43][C@@H:37]([C:28]1[C:27]([CH3:48])=[CH:26][C:24]2[N:25]=[C:21]([C:2]3[N:3]=[C:4]([C:8]4[CH:9]=[C:10]5[C:14](=[CH:15][CH:16]=4)[N:13]([CH3:17])[N:12]=[CH:11]5)[N:5]([CH3:7])[CH:6]=3)[S:22][C:23]=2[C:29]=1[C:30]1[CH:31]=[CH:32][C:33]([Cl:36])=[CH:34][CH:35]=1)[C:38]([O:40][CH2:41][CH3:42])=[O:39])([CH3:45])([CH3:46])[CH3:47]

Komponenten

8

Edukt 3

HCID 433294Lithium ChlorideHCID 86700141(S)-ethyl 2-(2-bromo-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetateHCID 86700381HCID 86700381, Verbindung

Produkt 1

HCID 86700382HCID 86700382, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 8857Ethyl AcetateLösungsmittelHCID 312751,4-DioxaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

In a 10 mL reaction vial, 5-(4-bromo-1-methyl-1H-imidazol-2-yl)-1-methyl-1H-indazole (50 mg, 0.172 mmol) was dissolved in dioxane (3 mL) at rt. The solution was bubbled with argon for 5 min. Then Sn2(n-Bu)6 (0.136 mL, 0.259 mmol), LiCl (60 mg, 1.4 mmol), Pd(PPh3)2Cl2 (24 mg, 0.034 mmol) and Pd(PPh3)4 (40 mg, 0.0344 mmol) were added sequentially. The resulting reaction mixture was sealed and heated to 90° C. in oil bath. To this mixture, a solution of (S)-ethyl 2-(2-bromo-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate (128 mg, 0.259 mmol) in dioxane (1.5 mmol) was added slowly through syringe pump over 1.5 h. The resulting reaction mixture was stirred at 100° C. in oil bath for 16 h. The reaction was then diluted with EtOAc (20 mL) and filtered to remove solid. The filtrate was concentrated and purified on silica gel column with 0-20% EtOAc/Hex to afford product. LCMS-ESI+: calc'd for: C34H34ClN5O3S: 628.2, 629.2, 630.2 (M+H+); found: 628.1, 629.1, 630.1 (M+H+)

Aufarbeitung

  1. customIn a 10 mL reaction vial
  2. customThe solution was bubbled with argon for 5 min
  3. customThe resulting reaction mixture
  4. customwas sealed
  5. customThe resulting reaction mixture
  6. filtrationfiltered
  7. customto remove solid
  8. concentrationThe filtrate was concentrated
  9. custompurified on silica gel column with 0-20% EtOAc/Hex
  10. customto afford product

Quellen und Nachweise

ORD-Eintrag
ord-b36109c56bd5434f89dc63ff7443df99
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08987250B2

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