Sodium hydride → 4-Methyl-3-triisopropylsilanylsulfanyl-benzoic acid ethyl ester

HRID 1466839

Reaktionsgleichung

Reaktionsgleichung von HRID 1466839
[CH:1]([Si:4]([CH:9]([CH3:11])[CH3:10])([CH:6]([CH3:8])[CH3:7])[SH:5])([CH3:3])[CH3:2].[H-].[Na+].Br[C:15]1[CH:16]=[C:17]([CH:23]=[CH:24][C:25]=1[CH3:26])[C:18]([O:20][CH2:21][CH3:22])=[O:19]>C1COCC1.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>[CH2:21]([O:20][C:18](=[O:19])[C:17]1[CH:23]=[CH:24][C:25]([CH3:26])=[C:15]([S:5][Si:4]([CH:1]([CH3:3])[CH3:2])([CH:6]([CH3:8])[CH3:7])[CH:9]([CH3:11])[CH3:10])[CH:16]=1)[CH3:22]

Komponenten

6

Edukt 3

HCID 24758Sodium hydrideHCID 3435097Tris(propan-2-yl)silanethiolHCID 14945865Ethyl 3-bromo-4-methylbenzoate

Produkt 1

HCID 667648104-Methyl-3-triisopropylsilanylsulfanyl-benzoic acid ethyl ester

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a 0° C. stirred solution of triisopropylsilanethiol (14.28 mmol, 3.07 mL) in THF was added sodium hydride (14.28 mmol, 0.57 g of a 60 wt % dispersion in mineral oil). After 30 min, the mixture was added to a solution of ethyl 3-bromo-4-methylbenzoate (10.99 mmol, 2.67 g) at room temperature, followed by tetrakis(triphenylphosphine)palladium(0) (0.55 mmol, 0.64 g). The resulting mixture was warmed to reflux and stirred for 18 hours, then cooled to room temperature and subjected to standard aqueous workup to afford the title compound which was used crude in the next step.

Aufarbeitung

  1. temperatureThe resulting mixture was warmed
  2. temperatureto reflux

Quellen und Nachweise

ORD-Eintrag
ord-75ea47a9512449939a7d3f0375b27f6f
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US09000025B2

Verknüpfte Notizen

Wird geladen…