Browsing by Author "Sahoo, Santosh K."

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An unprecedented oxidative intermolecular homo coupling reaction between two sp(3)C-sp(3)C centers under metal-free condition
(2016-08-03)
Sahoo, Santosh K.
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應用化學系
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Department of Applied Chemistry
An unprecedented formation of benzylic sp(3)C-sp(3)C coupled dibenzylic products has been illustrated. The reactions have been carried out in the presence of three oxidizing reagents, i.e., diacetoxy-iodobenzene (IBDA), N-fluorobenzenesulfonimide (NFSI), and pyridine (Py) using toluene derivatives. (C) 2016 Elsevier Ltd. All rights reserved.
Pd(II)-Catalyzed Direct Dehydrogenative Mono- and Diolefination of Selenophenes
(2020-03-20)
Chen, Shi-Yen
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Sahoo, Santosh K.
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Huang, Ching-Li
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Chan, Tung-Hsien
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Cheng, Yen-Ju
Pd(II)-catalyzed dehydrogenative Heck olefination of selenophenes with a broad olefinic substrate scope and high functional group tolerance is demonstrated. Carbonyl-substituted and phenyl-substituted olefins with electron-donating (D) and electron-accepting (A) groups can be regioselectively installed at C2 of the selenophene. The 2-olefinated selenophenes can subsequently undergo a second oxidative olefination to rapidly produce a new class of symmetrical D-pi-D or unsymmetrical D-pi-A 2,5-diolefinated selenophene materials.
Synthesis of unsymmetrical benzotrichalcogenophenes by N-heterocyclic carbene-palladium-catalyzed intramolecular direct C3-arylation of chalcogenophenes
(2018-02-11)
Chen, Shi-Yen
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Pao, Yu-Chieh
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Sahoo, Santosh K.
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Huang, Wen-Chia
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Lai, Yu-Ying
A series of new unsymmetrical benzotrichalcogenophenes (BTCs) were synthesized by the Pd-N-heterocyclic carbene catalyzed intramolecular C3-arylation of furan, thiophene, selenophene and tellurophene units. This is the first time that a C3-direct arylation of selenophene and tellurophene moieties has ever been demonstrated.