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Ring-Chain Equilibrium between an [18]Cyclacene Derivative and a Ladder Oligomer (1998)

Kintzel, Oliver ; Luger, Peter ; Weber, Manuela ; [et al.]

Weinheim : Wiley-Blackwell

Liebigs Annalen 1998 (1998), S. 99-105

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ISSN: 1434-193X

Keywords: Ladder polymers ; Macrocycles ; Cycloadditions ; Retro Diels-Alder reaction ; Benzo[c]furan ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The synthesis of the AB-type Diels-Alder (DA) monomer 12 is reported whose self-condensation leads to the formation of the linear ladder oligomer 17 and its cyclic congener 18. 18 is the largest [n]cyclacene derivative known (n = 18) and can be obtained by thermal treatment of 17 in yields of up to 45% utilizing the reversibility of the DA cyclization involved. 17 can be considered a “storage form” for 18.

Type of Medium: Electronic Resource

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