Tetrasubstituted alkene-based 1,2,3,4-tetrahydroisoquinolines are synthesized via
the formation of a cyclic carbopalladation complex followed by C–H bond activation
of the sp2 carbon in arenes. This domino reaction proceeds with good selectivity and provides
good yields of the products. The requisite starting materials are synthesized by copper(I)
iodide catalyzed A3-coupling reactions.
Key words
palladium - C–H activation - alkynes - heterocycles - carbopalladation