Photochemical Transformation of some 3-benzyloxy-2-(benzo (b) thiophen-2-yl)-4 H chromen-4-ones: A Remote Substituent Effect
Abstract: The effect on photochemical transformations of the substituents present remotely from the reaction site in 3-benzyloxy-2-(benzo[b]thiophen-2-yl)-4H-chromen-4-ones has been determined. The structure (s) of the substrates and photoproducts were established by spectroscopic techniques (UV, IR, and NMR). The substituents had profound effects on product yield and distribution. Electron withdrawing groups (EWGs) on the benzenoid moiety of the chromenone nucleus increased the yield of the photoproducts whereas electron donating groups (EDGs) decreased the yield. These results may be attributed to “state switching” of the substituents during excitation.
- Location
-
Deutsche Nationalbibliothek Frankfurt am Main
- Extent
-
Online-Ressource
- Language
-
Englisch
- Bibliographic citation
-
Photochemical Transformation of some 3-benzyloxy-2-(benzo (b) thiophen-2-yl)-4 H chromen-4-ones: A Remote Substituent Effect ; volume:16 ; number:1 ; year:2018 ; pages:79-86 ; extent:8
Open chemistry ; 16, Heft 1 (2018), 79-86 (gesamt 8)
- Creator
-
Dalal, Aarti
Khanna, Radhika
Kamboj, Ramesh C.
- DOI
-
10.1515/chem-2018-0009
- URN
-
urn:nbn:de:101:1-2410161556008.126159397648
- Rights
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
-
15.08.2025, 7:37 AM CEST
Data provider
This object is provided by:
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Dalal, Aarti
- Khanna, Radhika
- Kamboj, Ramesh C.
Other Objects (12)
![Untersuchungen zur Oxyentschwefelung von Benzo[b]naphtho[2,1-d]thiophen [Benzo-b-naphtho-d-thiophen] und Dinaphtho[1,2-b:2',1'd]thiophen [Dinaphtho-b-d-thiophen] als Modellsubstanzen für anellierte Thiophene in Erdöl und Kohle](/assets/placeholder/searchResultMediaNoDigitisedMedia.png)
Untersuchungen zur Oxyentschwefelung von Benzo[b]naphtho[2,1-d]thiophen [Benzo-b-naphtho-d-thiophen] und Dinaphtho[1,2-b:2',1'd]thiophen [Dinaphtho-b-d-thiophen] als Modellsubstanzen für anellierte Thiophene in Erdöl und Kohle
N‐Heterocyclische Carbene mit und ohne Thiophen‐Substituent: Chirale Adsorption und unidirektionale Rotation auf Au (111)
Synthesis of substituted 8H-benzo[h]pyrano[2,3-f]quinazolin-8-ones via photochemical 6π-electrocyclization of pyrimidines containing an allomaltol fragment
Synthese chemilumineszenzfähiger Benzo[f]phthalazin-1,4(2H,3H)-dione [Benzo-f-phthalazin-H-H-dione] mit reaktiven Substituenten
Novel 5‐(Benzo (b) thiophen‐3‐yl) pyridine‐3‐carbaldehyde (BTPA) Functionalization Framework For Modulating Fullerene Electronics
Reaktionen bei der Einwirkung von Oxidationsmitteln auf (b)anellierte Thiophene : Charakterisierung und Reaktionen des Benzo(b)thiophen-1-oxids
Annulation reactions of heterocyclic chlorovinylaldehydes : synthesis of functionalized 6H-benzo[c]chromen-6-ones (biaryl lactones), 6H-benzo[c]chromenes and heteroannulated pyridines
A NEW APPROACH TO THE SYNTHESIS OF BENZO (b)(1,8) NAPHTHYRIDIN-I (IH) ONES
The efficient synthesis of dibenzo[d,d']benzo[1,2-b:4,3-b']dithiophene and cyclopenta[1,2-b:4,3-b']bis(benzo[d]thiophen)-6-one
Physiologische und biochemische Untersuchungen zum Abbau von Thiophen-2-carbonsäure und Thiophen-2-essigsäure
The mechanism of an unusual benzo-benzo photocycloaddition reaction : photophysical and photochemical investigation of [3.3] orthocyclophanes with two face-to-face preoriented benzenoid chromophores
Annulation reactions of heterocyclic chlorovinyl-aldehydes : synthesis of functionalized 6H-benzo[c]chromen-6-ones (biaryl lactones), 6H-benzo[c]chromenes and heteroannulated pyridines
Untersuchungen zur Oxyentschwefelung von Benzo[b]naphtho[2,1-d]thiophen [Benzo-b-naphtho-d-thiophen] und Dinaphtho[1,2-b:2',1'd]thiophen [Dinaphtho-b-d-thiophen] als Modellsubstanzen für anellierte Thiophene in Erdöl und Kohle
N‐Heterocyclische Carbene mit und ohne Thiophen‐Substituent: Chirale Adsorption und unidirektionale Rotation auf Au (111)
Synthesis of substituted 8H-benzo[h]pyrano[2,3-f]quinazolin-8-ones via photochemical 6π-electrocyclization of pyrimidines containing an allomaltol fragment
Synthese chemilumineszenzfähiger Benzo[f]phthalazin-1,4(2H,3H)-dione [Benzo-f-phthalazin-H-H-dione] mit reaktiven Substituenten
Novel 5‐(Benzo (b) thiophen‐3‐yl) pyridine‐3‐carbaldehyde (BTPA) Functionalization Framework For Modulating Fullerene Electronics
Reaktionen bei der Einwirkung von Oxidationsmitteln auf (b)anellierte Thiophene : Charakterisierung und Reaktionen des Benzo(b)thiophen-1-oxids
Annulation reactions of heterocyclic chlorovinylaldehydes : synthesis of functionalized 6H-benzo[c]chromen-6-ones (biaryl lactones), 6H-benzo[c]chromenes and heteroannulated pyridines
A NEW APPROACH TO THE SYNTHESIS OF BENZO (b)(1,8) NAPHTHYRIDIN-I (IH) ONES
The efficient synthesis of dibenzo[d,d']benzo[1,2-b:4,3-b']dithiophene and cyclopenta[1,2-b:4,3-b']bis(benzo[d]thiophen)-6-one
Physiologische und biochemische Untersuchungen zum Abbau von Thiophen-2-carbonsäure und Thiophen-2-essigsäure
The mechanism of an unusual benzo-benzo photocycloaddition reaction : photophysical and photochemical investigation of [3.3] orthocyclophanes with two face-to-face preoriented benzenoid chromophores
Annulation reactions of heterocyclic chlorovinyl-aldehydes : synthesis of functionalized 6H-benzo[c]chromen-6-ones (biaryl lactones), 6H-benzo[c]chromenes and heteroannulated pyridines
Untersuchungen zur Oxyentschwefelung von Benzo[b]naphtho[2,1-d]thiophen [Benzo-b-naphtho-d-thiophen] und Dinaphtho[1,2-b:2',1'd]thiophen [Dinaphtho-b-d-thiophen] als Modellsubstanzen für anellierte Thiophene in Erdöl und Kohle
N‐Heterocyclische Carbene mit und ohne Thiophen‐Substituent: Chirale Adsorption und unidirektionale Rotation auf Au (111)
Synthesis of substituted 8H-benzo[h]pyrano[2,3-f]quinazolin-8-ones via photochemical 6π-electrocyclization of pyrimidines containing an allomaltol fragment
Synthese chemilumineszenzfähiger Benzo[f]phthalazin-1,4(2H,3H)-dione [Benzo-f-phthalazin-H-H-dione] mit reaktiven Substituenten
Novel 5‐(Benzo (b) thiophen‐3‐yl) pyridine‐3‐carbaldehyde (BTPA) Functionalization Framework For Modulating Fullerene Electronics
Reaktionen bei der Einwirkung von Oxidationsmitteln auf (b)anellierte Thiophene : Charakterisierung und Reaktionen des Benzo(b)thiophen-1-oxids
Annulation reactions of heterocyclic chlorovinylaldehydes : synthesis of functionalized 6H-benzo[c]chromen-6-ones (biaryl lactones), 6H-benzo[c]chromenes and heteroannulated pyridines
A NEW APPROACH TO THE SYNTHESIS OF BENZO (b)(1,8) NAPHTHYRIDIN-I (IH) ONES
The efficient synthesis of dibenzo[d,d']benzo[1,2-b:4,3-b']dithiophene and cyclopenta[1,2-b:4,3-b']bis(benzo[d]thiophen)-6-one
Physiologische und biochemische Untersuchungen zum Abbau von Thiophen-2-carbonsäure und Thiophen-2-essigsäure
The mechanism of an unusual benzo-benzo photocycloaddition reaction : photophysical and photochemical investigation of [3.3] orthocyclophanes with two face-to-face preoriented benzenoid chromophores