Reactions on solid supports part IV: Reactions of αβ-unsaturated carbonyl compounds with indoles using clay as catalyst
作者:Zafar Iqbal、Anthony H Jackson、K.R.Nagaraja Rao
DOI:10.1016/s0040-4039(00)86116-x
日期:1988.1
Indoles react with αβ-unsaturated carbonylcompounds in the presence of clay catalysts to give substituted indoles in good yields; in one case a 3-benzyl substituent already present migrated to the 2-position, being displaced by the incoming electrophile, thus confirming that electrophilic substitution in indole occurs primarily at the 3-position.