Catalyst- and template-free condensation of photochromic difurylethene bisaldehyde with o-phenylenediamine led to selective formation of macrocyclic Schiff base [AB]2 product. Application of the same difurylethene bisaldehyde in the McMurry reaction… Click to show full abstract
Catalyst- and template-free condensation of photochromic difurylethene bisaldehyde with o-phenylenediamine led to selective formation of macrocyclic Schiff base [AB]2 product. Application of the same difurylethene bisaldehyde in the McMurry reaction resulted in cyclic dimer formation in moderate yield. No linear oligomers were observed in both approaches.
               
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