Mechanisms of photochemical reactions in solution. LXXXI. Photocyclization of 1,8-divinylnaphthalene. New method for determining the multiplicity of excited state intermediates
Phenalenannulations: Three‐Point Double Annulation Reactions that Convert Benzenes into Pyrenes
作者:Rahul Kisan Kawade、Chaowei Hu、Nikolas R. Dos Santos、Noelle Watson、Xinsong Lin、Kenneth Hanson、Igor V. Alabugin
DOI:10.1002/anie.202006087
日期:2020.8.17
3‐Point annulations, or phenalenannulations, transform a benzene ring directly into a substituted pyrene by “wrapping” two new cycles around the perimeter of the central ring at three consecutive carbonatoms. This efficient, modular, and general method for π‐extension opens access to non‐symmetric pyrenes and their expanded analogues. Potentially, this approach can convert any aromatic ring bearing