Helicity induction and memory of a lipophilic Brønsted acid-type poly(phenylacetylene) in non-polar solvents.
Chem Commun (Camb)
; 59(53): 8226-8229, 2023 Jun 29.
Article
em En
| MEDLINE
| ID: mdl-37233448
ABSTRACT
A novel lipophilic Brønsted acid-type PPA (poly-1-H) bearing a sulfonylphosphoramidic acid moiety, covered with a dynamically axially chiral biphenyl pendant, was synthesized and found to form a preferred-handed helical conformation in non-polar solvents upon complexation with non-racemic amines. This induced helicity was maintained after replacement with achiral amines ("dynamic helicity memory"). In addition, poly-1-H exhibited "static helicity memory" in which the induced helical conformation was maintained in non-polar solvents, even after acidification with a stronger acid without replacement with achiral amines.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acetileno
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Aminas
Idioma:
En
Revista:
Chem Commun (Camb)
Ano de publicação:
2023
Tipo de documento:
Article