Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor

Abstract The electrochemical [3+2] cycloaddition of phenols and alkenes in a laminar‐flow microreactor was realized at an unprecedentedly low electrolyte concentration (0.001–0.01 M) owing to low solution resistance derived from the narrow electrode distance. An overoxidation of the resulting cycloa...

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Main Authors: Dr. Kazuhiro Okamoto, Prof. Dr. Naoki Shida, Prof. Dr. Mahito Atobe
Format: Article
Language:English
Published: Wiley-VCH 2023-12-01
Series:ChemElectroChem
Subjects:
Online Access:https://doi.org/10.1002/celc.202300386
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author Dr. Kazuhiro Okamoto
Prof. Dr. Naoki Shida
Prof. Dr. Mahito Atobe
author_facet Dr. Kazuhiro Okamoto
Prof. Dr. Naoki Shida
Prof. Dr. Mahito Atobe
author_sort Dr. Kazuhiro Okamoto
collection DOAJ
description Abstract The electrochemical [3+2] cycloaddition of phenols and alkenes in a laminar‐flow microreactor was realized at an unprecedentedly low electrolyte concentration (0.001–0.01 M) owing to low solution resistance derived from the narrow electrode distance. An overoxidation of the resulting cycloadducts (dihydrobenzofuran derivatives) was avoided through the optimization of the reactor configuration, and nine of dihydrobenzofuran derivatives are successfully synthesized in our system without any oxidant. Furthermore, simple scale‐up was enabled by using parallel stacked flow cell system.
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spelling doaj.art-b7f618cca27c45648fb37abcd707a3642023-12-05T02:03:44ZengWiley-VCHChemElectroChem2196-02162023-12-011023n/an/a10.1002/celc.202300386Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow MicroreactorDr. Kazuhiro Okamoto0Prof. Dr. Naoki Shida1Prof. Dr. Mahito Atobe2Graduate School of Engineering Yokohama National University 79-5 Tokiwa-dai, Hodogaya-ku 240-8501 Yokohama Kanagawa JapanGraduate School of Engineering Yokohama National University 79-5 Tokiwa-dai, Hodogaya-ku 240-8501 Yokohama Kanagawa JapanGraduate School of Engineering Yokohama National University 79-5 Tokiwa-dai, Hodogaya-ku 240-8501 Yokohama Kanagawa JapanAbstract The electrochemical [3+2] cycloaddition of phenols and alkenes in a laminar‐flow microreactor was realized at an unprecedentedly low electrolyte concentration (0.001–0.01 M) owing to low solution resistance derived from the narrow electrode distance. An overoxidation of the resulting cycloadducts (dihydrobenzofuran derivatives) was avoided through the optimization of the reactor configuration, and nine of dihydrobenzofuran derivatives are successfully synthesized in our system without any oxidant. Furthermore, simple scale‐up was enabled by using parallel stacked flow cell system.https://doi.org/10.1002/celc.202300386ElectrosynthesisFlow microreactorCycloadditionPhenoxonium cationDihydrobenzofuran
spellingShingle Dr. Kazuhiro Okamoto
Prof. Dr. Naoki Shida
Prof. Dr. Mahito Atobe
Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor
ChemElectroChem
Electrosynthesis
Flow microreactor
Cycloaddition
Phenoxonium cation
Dihydrobenzofuran
title Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor
title_full Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor
title_fullStr Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor
title_full_unstemmed Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor
title_short Electrochemical [3+2] Cycloaddition Proceeding at Low Electrolyte Concentration in Laminar‐Flow Microreactor
title_sort electrochemical 3 2 cycloaddition proceeding at low electrolyte concentration in laminar flow microreactor
topic Electrosynthesis
Flow microreactor
Cycloaddition
Phenoxonium cation
Dihydrobenzofuran
url https://doi.org/10.1002/celc.202300386
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