The reaction mechanism of palladium-catalyzed visible light-driven carboxylation of aryl halides and triflates with a photoredox catalyst was examined in detail. Experimental and theoretical studies indicated that the active species for photoredox-catalyzed reduction was cationic ArPd(II)(+) species to generate nucleophilic ArPd(I) or its further reduced ArPd(0)(-) species, which reacted with CO2 to give carboxylic acids. Hydrodehalogenated compounds, main byproducts in this carboxylation, were thought to be generated by protonation of these reduced species.
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Tokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, JapanTokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan
Shimomaki, Katsuya
Murata, Kei
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Tokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan
Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, JapanTokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan
Murata, Kei
Martin, Ruben
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Barcelona Inst Sci & Technol, Inst Chem Res Catalonia ICIQ, Av Paisos Catalans 16, Tarragona 43007, Spain
Catalan Inst Res & Adv Studies ICREA, Passeig Lluis Co 23, Barcelona 08010, SpainTokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan
Martin, Ruben
Iwasawa, Nobuharu
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Tokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, JapanTokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan
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CSIR Indian Inst Chem Biol, Organ & Med Chem Div, 4 Raja SC Mullick Rd, Kolkata 700032, W Bengal, IndiaCSIR Indian Inst Chem Biol, Organ & Med Chem Div, 4 Raja SC Mullick Rd, Kolkata 700032, W Bengal, India
Nandi, Shantanu
Jana, Ranjan
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CSIR Indian Inst Chem Biol, Organ & Med Chem Div, 4 Raja SC Mullick Rd, Kolkata 700032, W Bengal, India
Acad Sci & Innovat Res AcSIR, Kolkata 700032, W Bengal, IndiaCSIR Indian Inst Chem Biol, Organ & Med Chem Div, 4 Raja SC Mullick Rd, Kolkata 700032, W Bengal, India