Abstract
An effective route to functionalized 1,2,3,10b-tetrahydropyrrolo[2,1-a]isoquinoline-1-carboxamide derivatives is described. This involves reaction of N-alkyl-3-oxobutanamides, which result from the addition of amines to diketene, and
dibenzoylacetylene in the presence of isoquinoline. The reactive 1:1 intermediate
obtained from the addition of isoquinoline to dibenzoyl-acetylene is trapped by
OH acids such as N-alkyl-3-oxobutanamides to produce the pyrrolo[2,1-a]isoquinoline-1-carboxamide derivatives.
Key words
amine - diketene - dibenzoylacetylene - isoquinoline - multicomponent reaction - pyrroloisoquinoline