On exposure to a combination of Cu[I]-and Pd[0]-based catalysts, compounds such as 1 and 7 engage in tandem Ullmann−Goldberg cross-coupling and cyclopalladation-reductive elimination reactions to give benzofurans such as 8. Related reactions involving hetero-Michael additions of o-halogenated phenols or anilines to propiolates and the Pd[0]-catalyzed cyclization of the resulting conjugates provide, in a one-pot process, alternately functionalized benzofurans, indoles, or phthalanes.

No abstract

No abstract

No abstract