Toluene → 2-(4-Diphenylaminophenyl)-1,4-bis(acetyloxymethyl)benzene

Beteiligte Stoffe

Reaktionsschritte

4-Diphenylamino-1-(4,4,5,5-tetramethyl-1,3,2-Dioxaborolan-2-yl)benzene (6.09 g) (prepared by successive reaction of 4-bromo-triphenylamine with butyllithium and 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane), 2-bromo-1,4-bis(acetyloxymethyl)benzene (4.9 g), tetrakis(triphenylphosphine)-palladium(0) (0.15 g), toluene (15 mL), and an aqueous solution of sodium carbonate (2M, 25 mL) were mixed under argon. The resulting mixture was stirred at reflux for 2 days, cooled, and poured into water. The aqueous mixture was then extracted with ether. The etheral solution was washed with dilute HCl, brine, dried with magnesium sulfate, and evaporated. The residue was recrystallized in methanol to yield 5.70 g of 2-(4-diphenylamino-phenyl)-1,4-bis(acetyloxymethyl)benzene.

Herkunft & Nachweise