2020
DOI: 10.1039/c9sc06184c
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Redox-neutral photochemical Heck-type arylation of vinylphenols activated by visible light

Abstract: A regioselective and stereoselective Heck-type arylation of vinylphenols with non-activated (hetero)aryl halides was realized under visible light irradiation. The vinylphenolate anions acted as strong reducing photoactivators to activate (hetero)aryl halides.

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Cited by 37 publications
(32 citation statements)
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“…Recently, Xia and co‐workers made use of the remarkable excited‐state potential of the phenolate 52.2 (Eox* =−2.48 V vs. SCE) in a Heck‐type arylation reaction promoted by blue LED light [114] …”
Section: Excited Anionic Compounds As Reagentsmentioning
confidence: 99%
See 1 more Smart Citation
“…Recently, Xia and co‐workers made use of the remarkable excited‐state potential of the phenolate 52.2 (Eox* =−2.48 V vs. SCE) in a Heck‐type arylation reaction promoted by blue LED light [114] …”
Section: Excited Anionic Compounds As Reagentsmentioning
confidence: 99%
“…Recently,Xia and co-workers made use of the remarkable excited-state potential of the phenolate 52.2 (E ox * = À2.48 V vs.SCE) in aHeck-type arylation reaction promoted by blue LED light. [114] Scheme 24. Proposed dual-catalytic mechanism for the dehydrogenative alkenylation of alkanes and aldehydes with alkenes.…”
Section: Excited-state Phenolate As Aphotoreductantmentioning
confidence: 99%
“…Xia und Mitarbeiter machten kürzlich Gebrauch von dem stark reduzierenden Potential des angeregten Phenolat‐Anions 52.2 (Eox* =−2.48 V vs. SCE) in Heck‐artigen Arylierungsreaktionen, die durch blaues LED‐Licht angetrieben werden [114] …”
Section: Angeregte Anionische Verbindungen Als Reagenzienunclassified
“…Xia und Mitarbeiter machten kürzlich Gebrauch von dem stark reduzierenden Potential des angeregten Phenolat-Anions 52.2 (E ox * = À2.48 Vv s. SCE) in Heck-artigen Arylierungsreaktionen, die durch blaues LED-Licht angetrieben werden. [114] Der synthetische Nutzen wurde anhand der Arylierung von 4-Hydroxyzimtsäuremethylester 52.2 mit verschiedenen (Hetero-)Arylhalogeniden 51.1 (Schema 27) demonstriert. Zusätzlich zeigten andere Zimtsäurederivate (52.2-13, 52.19), und Flavonoide (52.16-18, 52.20)gute Reaktivitätgegenüber dem gebildeten Aryl-Radikal, und die entsprechenden Arylierungsprodukte (53.1 und 54.1)k onnten in moderaten bis guten Ausbeuten erhalten werden.…”
Section: Angeregte Phenolate Als Photoreduktionsmittelunclassified
“…3 We also discovered that the visible light-excited vinylphenolate anions enabled the direct reduction of aryl halides to aryl radicals. 4 However, attempts to use the vinylphenolate anion as a new photocatalyst failed and only afforded the Heck-type arylation products by coupling with aryl radicals. In this manuscript, we discovered that the tri-substituted phenolate anion possessed strong reduction potential and acted as a new photocatalyst with redox-neutral features.…”
Section: Introductionmentioning
confidence: 99%