Benzyl Bromide → 3,4-DIHYDRO-9-[(BENZYL)AMINO]-1(2H)-ACRIDINONE

Participants

Reaction Steps

In a biphasic solution consisting of 150 ml of dichloromethane and 100 ml of 50% aqueous NaOH were added 4.00 g of 9-amino-3,4-dihydroacridin-1(2H)-one, and 0.96 g of tetrabutylammonium hydrogensulfate catalyst. The mixture was stirred mechanically for 0.5 hour and thereafter 2.47 ml (1.1 eq) of benzyl bromide was added in one portion. After 4 hours of vigorous stirring, the reaction appeared complete based on thin layer chromatography analysis. The reaction mixture was poured into water/ice and the dichloromethane layer separated, dried over MgSO4 and evaporated to a solid. the solid was recrystallized three times from dichloromethane/hexanes to yield 2.35 g (41%) of product, melting point 162°-163° C.

Provenance & Evidence