Cascade Reactions of Indigo with an Allenylic Reactant

The base-enabled reaction of buta-2,3-dien-1-yl methanesulfonate with the readily available and cheap dye indigo resulted in the convenient one-pot synthesis of benzoindolonaphthyridinedione and benzoazepinopyridoindolediones, with the latter representing two novel heterocyclic scaffolds. Despite th...

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Main Authors: Dyah U. C. Rahayu, Christopher Richardson, John B. Bremner, Paul A. Keller
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Molecules
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Online Access:https://www.mdpi.com/1420-3049/30/14/2899
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author Dyah U. C. Rahayu
Christopher Richardson
John B. Bremner
Paul A. Keller
author_facet Dyah U. C. Rahayu
Christopher Richardson
John B. Bremner
Paul A. Keller
author_sort Dyah U. C. Rahayu
collection DOAJ
description The base-enabled reaction of buta-2,3-dien-1-yl methanesulfonate with the readily available and cheap dye indigo resulted in the convenient one-pot synthesis of benzoindolonaphthyridinedione and benzoazepinopyridoindolediones, with the latter representing two novel heterocyclic scaffolds. Despite the low yields, the allenylic alkylation of indigo significantly contributes to the new chemistry of this compound, providing new mechanistic insights and reactivity boundaries.
format Article
id doaj-art-aeef77e314e843669b260319985bc155
institution DOAJ
issn 1420-3049
language English
publishDate 2025-07-01
publisher MDPI AG
record_format Article
series Molecules
spelling doaj-art-aeef77e314e843669b260319985bc1552025-08-20T03:08:13ZengMDPI AGMolecules1420-30492025-07-013014289910.3390/molecules30142899Cascade Reactions of Indigo with an Allenylic ReactantDyah U. C. Rahayu0Christopher Richardson1John B. Bremner2Paul A. Keller3School of Science, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Science, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Science, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Science, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, AustraliaThe base-enabled reaction of buta-2,3-dien-1-yl methanesulfonate with the readily available and cheap dye indigo resulted in the convenient one-pot synthesis of benzoindolonaphthyridinedione and benzoazepinopyridoindolediones, with the latter representing two novel heterocyclic scaffolds. Despite the low yields, the allenylic alkylation of indigo significantly contributes to the new chemistry of this compound, providing new mechanistic insights and reactivity boundaries.https://www.mdpi.com/1420-3049/30/14/2899indigocascade reactionallenylic electrophilebenzoindolonaphthyridinedionebenzoazepinopyridoindolediones
spellingShingle Dyah U. C. Rahayu
Christopher Richardson
John B. Bremner
Paul A. Keller
Cascade Reactions of Indigo with an Allenylic Reactant
Molecules
indigo
cascade reaction
allenylic electrophile
benzoindolonaphthyridinedione
benzoazepinopyridoindolediones
title Cascade Reactions of Indigo with an Allenylic Reactant
title_full Cascade Reactions of Indigo with an Allenylic Reactant
title_fullStr Cascade Reactions of Indigo with an Allenylic Reactant
title_full_unstemmed Cascade Reactions of Indigo with an Allenylic Reactant
title_short Cascade Reactions of Indigo with an Allenylic Reactant
title_sort cascade reactions of indigo with an allenylic reactant
topic indigo
cascade reaction
allenylic electrophile
benzoindolonaphthyridinedione
benzoazepinopyridoindolediones
url https://www.mdpi.com/1420-3049/30/14/2899
work_keys_str_mv AT dyahucrahayu cascadereactionsofindigowithanallenylicreactant
AT christopherrichardson cascadereactionsofindigowithanallenylicreactant
AT johnbbremner cascadereactionsofindigowithanallenylicreactant
AT paulakeller cascadereactionsofindigowithanallenylicreactant