1.
Org Biomol Chem
; 9(14): 5018-20, 2011 Jul 21.
Article
in English
| MEDLINE
| ID: mdl-21491056
ABSTRACT
[2.2]Paracyclophanes, incorporating functional groups in the aliphatic bridges, suitable for elimination to give [2.2]paracyclophanedienes, are synthesized through a novel approach. It relies on a double Pummerer rearrangement on dithiacyclophane precursors, followed by ring contraction through a photochemical sulfur extrusion, and it is compatible with aryl moieties possessing very different electronic properties.