Reaktion #326385

Reaktionsgleichung

m-toluidine

tri(tert-butyl)phosphine

9-(4-bromophenyl)-9-phenylfluorene

sodium tert-butoxide

→

white solid

Ausbeute 94.0%

3-methylphenyl-4-(9-phenyl-9H-fluoren-9-yl)phenylamine

Ausbeute 94.0%

Lösungsmittel

hexane

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeIn a 200 mL three-neck flask were put
2. 2
   Sonstigewas set to 60° C.
3. 3
   FiltrationAfter the stirring, the mixture was suction-filtered through Florisil, Celite, and alumina
4. 4
   Sonstigeto give a filtrate
5. 5
   EinengenThe filtrate was concentrated
6. 6
   Sonstigeto give a solid, which
7. 7
   Sonstigewas then purified by silica gel column chromatography (the developing solvent

Vorschrift

In a 200 mL three-neck flask were put 4.7 g (11.8 mmol) of 9-(4-bromophenyl)-9-phenylfluorene and 3.4 g (35.4 mmol) of sodium tert-butoxide. The air in the flask was replaced with nitrogen. To this mixture were added 60.0 mL of toluene, 1.3 mL (12.0 mmol) of m-toluidine, and 0.2 mL of a 10% hexane solution of tri(tert-butyl)phosphine. The temperature of this mixture was set to 60° C., and 36.7 mg (0.1 mmol) of bis(dibenzylideneacetone)palladium(0) was added to the mixture. The temperature of this mixture was raised to 80° C., followed by stirring for 2.0 hours. After the stirring, the mixture was suction-filtered through Florisil, Celite, and alumina to give a filtrate. The filtrate was concentrated to give a solid, which was then purified by silica gel column chromatography (the developing solvent has a 1:1 ratio of hexane to toluene). Accordingly, 4.7 g of a white solid was obtained in 93% yield, which was the substance to be produced. The synthesis scheme of this Step 1 is shown in the following (E8-1).

Quelle