Abstract: Novel benzyllithium systems, eg, 2, 4, and 5, have been prepared and characterized via chemical and NMR spectroscopic evidence. The important experimental aspects of this work are the method of carbanion preparation via reductive cleavage of a- bonds and the multinuclear NMR (IH, I3C, 7Li, 6Li) approach. It appears that carbanion and dianion structures are deeply affected by the intramolecular interaction between a ...
