Reaktion #42185

Reaktionsgleichung

bromobenzene

diphenylamine

sodium-tert-butoxide

→

triphenylamine

Ausbeute 85.0%

Lösungsmittel

xylene

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeA 100-ml four-necked flask was equipped with a stirrer
2. 2
   workup.ADDITIONadded into the flask
3. 3
   SonstigeThe flask was purged with argon
4. 4
   workup.STIRRINGby stirring at 125° C. for 4 hours
5. 5
   SonstigeAfter the completion of the reaction, 45 ml of xylene and 50 ml of saturated sodium chloride solution
6. 6
   workup.ADDITIONwere added
7. 7
   Sonstigefollowed by separation
8. 8
   SonstigeThe organic phase was purified by column chromatography

Vorschrift

A 100-ml four-necked flask was equipped with a stirrer, a thermometer and a reflux condenser. 7.536 g (48 mmol) of bromobenzene, 6.769 g (40 mmol) of diphenylamine, 4.613 g (48 mmol) of sodium-tert-butoxide, 0.090 g (0.40 mmol) of palladium (II) acetate and 5 ml of xylene were weighed in the flask, followed by stirring. Further, 0.690 g (1.20 mmol) of n-butyldicyclohexylphosphonium tetraphenylborate obtained in Example B-47 was weighed in air and added into the flask. The flask was purged with argon, followed by stirring at 125° C. for 4 hours. After the completion of the reaction, 45 ml of xylene and 50 ml of saturated sodium chloride solution were added, followed by separation. The organic phase was purified by column chromatography to afford 8.345 g of triphenylamine (yield: 85 mol % based on diphenylamine). The melting point was 125-126° C.

Quelle