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DOI: 10.1055/a-1941-1535
Expeditious Synthesis of Fluorescent Bis(phenylfuryl)benzenes
National Research Foundation of Korea (NRF) under the framework of international cooperation program (NRF-2021K2A9A1A01101863); National Research Foundation of Korea (NRF) through the grant funded by the Korean government, Ministry of Science and ICT (NRF-2020R1A2C1010724).
This paper is dedicated to Professor Masato Koreeda on the occasion of his 80th birthday.
Abstract
Versatile fluorescent polyaromatic compounds of alternating benzene and furan rings, para- and meta-bis(5-phenylfur-3-yl)benzenes, were expeditiously synthesized by double Mn(OAc)3-catalyzed oxidative decarbonylation and Paal–Knorr reactions of β-ketoesters, prepared from the conjugate addition of ethyl acetoacetate to para- and meta-bis(chalcones). Stronger fluorescence intensity was observed for meta-bis(phenylfuryl)benzene with ortho-methoxy substitution, whereas longer fluorescence wavelength was observed for para-bis(phenylfuryl)benzene with para-methoxy substitution.
Supporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/a-1941-1535.
- Supporting Information
Publication History
Received: 08 August 2022
Accepted after revision: 12 September 2022
Accepted Manuscript online:
12 September 2022
Article published online:
10 October 2022
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