Synthesis and Reactivity of the Methylene Arenium Form of a Benzyl Cation,Stabilized by Complexation

摘要

Benzyl cations are highly reactive compounds involved as key intermediates in various chemical and biochemical processes.They can be stabilized at low temperatures under super-acidic conditions.The structural and electronic properties of these compounds is a subject of fundamental importance.Experimental observations,supported by high level ab initio calculations,indicate that the nonaromatic,"methylene arenium" resonance form (B,Figure 1) can contribute significantly to the general energy of the benzyl cation.