Charge-Transfer Chromophores by Cycloaddition–Retro-electrocyclization: Multivalent Systems and Cascade Reactions

Chiral and Achiral Charge-Transfer Chrom

Chiral and Achiral Charge-Transfer Chromophores with a Dendralene-Type Backbone by Electronically Controlled Cycloaddition/Cycloreversion Cascades

✍ Brian B. Frank; Milan Kivala; Berta Camafort Blanco; Benjamin Breiten; W. Bernd 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 586 KB

## Abstract Chiral and achiral push‐pull chromophores have been prepared by cascades of sequential [2+2] cycloadditions of tetracyanoethene (TCNE) and tetrathiafulvalene (TTF) to different oligoynes. Thermal [2+2] cycloaddition of TCNE to donor‐substituted alkynes, followed by electrocyclic ring‐op