Highly Substituted Acephenanthrylenes and Their π-Extended Derivatives: Syntheses, Structural Analyses, and Properties.
Org Lett
; 24(26): 4778-4782, 2022 Jul 08.
Article
em En
| MEDLINE
| ID: mdl-35737084
ABSTRACT
This investigation demonstrates that a series of (highly) substituted acephenanthrylenes (APs) 2, benzo[l]acephenanthrylene 3, and dicyclopenta[cd,mn]pyrene 4 are easily prepared by palladium-catalyzed cycloaromatization of 2,3-diethynylbiphenyls 1. The first nonpyrolysis synthesis of 4 by two-fold cycloaromatization was achieved in a high yield. This synthetic protocol has two crucial advantages facile introduction of various substituents and efficient extension of the AP backbone.
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MEDLINE
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En
Ano de publicação:
2022
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Article