A route to a cyclobutane-linked double-looped system via a helical macrocycle
2019; Royal Society of Chemistry; Volume: 55; Issue: 31 Linguagem: Inglês
10.1039/c9cc01201j
ISSN1364-548X
AutoresJan Klajn, Wojciech Stawski, Piotr J. Chmielewski, Joanna Cybińska, Miłosz Pawlicki,
Tópico(s)Porphyrin and Phthalocyanine Chemistry
ResumoMacrocycles built of carbazole and pyridine fragments with alkene/alkane linkers constitute a helical structure as documented structurally and spectroscopically. The 'solid-state' prearrangement observed for two C[double bond, length as m-dash]C bonds leads to unprecedented transformation to a cyclobutane in a head-to-tail (rtct) geometry with two macrocyclic loops in a perpendicular orientation.
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