Title of article :
Hafnium Trifluoromethanesulfonate [Hf(OTf)4]-Catalyzed Conjugate Addition of Indoles to (alpha),(beta)-Enones
Author/Authors :
Kawatsura، Motoi نويسنده , , Aburatani، Sachiko نويسنده , , Uenishi، Junichi نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Hafnium trifluoromethanesulfonate [Hf(OTf)4]- and scandium trifluoromethanesulfonate [Sc(OTf)3]-catalyzed conjugated addition of 3-position of indoles to several enones proceeded in acetonitrile as solvent. Especially, Hf(OTf)4 exhibited high catalytic activity and gave the conjugate addition product in good yield.
Keywords :
hafnium trifluoromethanesulfonate , Lewis acids , conjugate additions , enones , catalysis , indoles
