A Mild, Thermal Pentafulvene-to-Benzene Rearrangement
作者:Aaron D. Finke、Sophie Haberland、W. Bernd Schweizer、Peter Chen、François Diederich
DOI:10.1002/anie.201304767
日期:2013.9.9
Walk this way: More than 40 years after the discovery that fulvene can thermallyrearrange to benzene at high temperatures, it has been found that 6,6‐dicyanopentafulvenes can rearrange quantitatively to 1,3‐ and 1,4‐dicyanobenzenes under mild conditions in polar aprotic solvents. A polar “ring‐walk” mechanism is proposed to explain this unprecedented reactivity.