REACTION OF TRIPHENYLBISMUTHONIUM 2-OXOALKYLIDES WITH BENZILS - A NOVEL ONE-POT CONVERSION OF SYMMETRICAL 1,2-DIKETONES INTO O-AROYL ENOLATES OF UNSYMMETRICAL 1,3-DIKETONES
Mm. Rahman et al., REACTION OF TRIPHENYLBISMUTHONIUM 2-OXOALKYLIDES WITH BENZILS - A NOVEL ONE-POT CONVERSION OF SYMMETRICAL 1,2-DIKETONES INTO O-AROYL ENOLATES OF UNSYMMETRICAL 1,3-DIKETONES, Chemical communications, (13), 1998, pp. 1359-1360
Triphenylbismuthonium 2-oxoalkylide 1, generated in situ from the corr
esponding onium salt 2 and base in THF at low temperatures, reacts wit
h benzils 3 to give O-aroyl enolates of unsymmetrical 1,3-diketones 4
in moderate to good yields.