Chromium Complexes Containing Polycyclic Condensed Aromatic Ligands: Mono- and Bidirectional Synthesis from Chromium-Carbenes, Molecular Structures, and Rearrangement Reactions

• Published in: European journal of inorganic chemistry Vol. 2014; no. 9; pp. 1462 - 1469
• Main Authors: Hegele, Peter, Schnakenburg, Gregor, Daniels, Jörg, Dötz, Karl Heinz
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.03.2014; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Subjects: Accessibility; Arene ligands; Benzannulation; Bidirectional; Carbenes; Chromium; Complexation; Ligands; Metal migration; Migration; Precursors; Reaction kinetics; Transformations

Chromium–pyrenylcarbenes accessible from halopyrene precursors undergo benzannulation upon gentle warming with 3‐hexyne to give hydroquinoid benzopyrene–Cr(CO)3 complexes. Kinetic benzannulation product 3 rearranges into thermodynamic haptotropomer 4 at 70 °C in octafluorotoluene under first‐order k...