The photoadducts derived from 3,4-dibromomaleimide and molrac olefines
are debrominated (Zn/Ag) to provide highly dienophilic cyclobutenomal
eimides fused to the rigid molrac framework; cycloaddition of cyclic d
ienes produces new molracs which are internally functionalised with su
ccinimide bridges. Copyright (C) 1996 Elsevier Science Lid