Donor-Acceptor Interaction-Driven Inclusion of Tetraimidazolium Cyclophanes to Carbanions That Induces pK a Shifting of Conjugated Carbonic Acids in Water*
Two tetraimidazolium-incorporated macrocycles have been prepared and used to include carbanionic conjugate bases of phenylmalononitriles through donor-acceptor interaction. X-ray diffraction analysis revealed that the two substrates form stable 1:1 complexes, with the carbanion being inserted in the cavity of the macro...