Symmetric and Unsymmetric 3,3′‐Linked Bispyrroles via Ring‐Enlargement Reactions of Furan‐Derived Donor—Acceptor Cyclopropanes.

A synthetic route has been developed to access symmetrically and unsymmetrically substituted 3,3′-linked bispyrroles by making use of the special features of furan-derived donor-acceptor cyclopropanes.