Lithium Chloride → (S)-ethyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(4-chloropyrimidin-2-yl)-5-methylbenzo[d]thiazol-6-yl)acetate

HRID 879515Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 879515
Br[C:2]1[S:3][C:4]2[C:10]([C:11]3[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][CH:12]=3)=[C:9]([C@H:18]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])[C:19]([O:21][CH2:22][CH3:23])=[O:20])[C:8]([CH3:29])=[CH:7][C:5]=2[N:6]=1.[Cl-].[Li+].C([Sn](CCCC)(CCCC)[C:37]1[N:42]=[C:41]([Cl:43])[CH:40]=[CH:39][N:38]=1)CCC>O1CCOCC1.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.[Cu]I>[C:25]([O:24][C@@H:18]([C:9]1[C:8]([CH3:29])=[CH:7][C:5]2[N:6]=[C:2]([C:37]3[N:42]=[C:41]([Cl:43])[CH:40]=[CH:39][N:38]=3)[S:3][C:4]=2[C:10]=1[C:11]1[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][CH:12]=1)[C:19]([O:21][CH2:22][CH3:23])=[O:20])([CH3:28])([CH3:27])[CH3:26]

Komponenten

7

Edukt 3

HCID 433294Lithium ChlorideHCID 149763044-Chloro-2-(tributylstannyl)pyrimidineHCID 86700141(S)-ethyl 2-(2-bromo-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate

Produkt 1

HCID 86700335(S)-ethyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(4-chloropyrimidin-2-yl)-5-methylbenzo[d]thiazol-6-yl)acetate

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418397HCID 178418397, VerbindungKatalysatorHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

(S)-ethyl 2-(2-bromo-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate (500 mg, 1.01 mmol), tetrakis(triphenylphosphine)palladium(0) (174 mg, 0.15 mmol), lithium chloride (128 mg, 3.02 mmol), and copper(I) iodide (58 mg, 0.3 mmol) were taken in a microwave vial, and the vial was vacuum pumped and flushed with argon three times. To this mixture was added 2-(tributylstannyl)-4-chloropyrimidine (447 mg, 1.11 mmol) in dioxane (12 mL) and the resulting mixture was stirred at 90° C. for 18 h. The reaction mixture was then cooled, filtered through Celite (ethyl acetate eluent), and concentrated. Purification by flash column chromatography on silica gel (hexanes/ethyl acetate eluent) provided the product. LCMS-ESI+ calc'd for C26H26Cl2N3O3S (M+H+): 530.1; Found: 530.0 (M+H+).

Aufarbeitung

  1. customflushed with argon three times
  2. temperatureThe reaction mixture was then cooled
  3. filtrationfiltered through Celite (ethyl acetate eluent)
  4. concentrationconcentrated
  5. customPurification by flash column chromatography on silica gel (hexanes/ethyl acetate eluent)
  6. customprovided the product

Quellen und Nachweise

ORD-Eintrag
ord-c357c7caa6fd4aa9b14d3d6ea46f4f78
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08987250B2

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