Kinetically Stabilized [4]Paracyclophane—The 1, 4‐Bis‐(dicyanomethylene)‐2‐ene Derivative: ¹H NMR Measurement and Assessment of Its Diatropicity

Abstract

The benzene ring is nonplanar but sustains significant aromatic ring current in [4]paracyclophane 1. The strained skeleton of this molecule was kineticaly stabilized by substituents, which permitted the measurement of the 1H NMR spectrum of a [4]paracyclophane for the first time.