Development of Carbazole-Cored Organo-Photocatalyst for Visible Light-Driven Reductive Pinacol/Imino-Pinacol Coupling.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c03600
Abstract: Benzoperylenocarbazole (BPC), a unique carbazole-based organophotocatalyst, is reported herein as a potent organo-photoreductant. Lower excited state oxidation potential (-2.0 V vs SCE) and reasonable excited state lifetime (4.61 ns) render BPC an effective photosensitizer. Under… read more here.
Keywords: pinacol; carbazole cored; organo photocatalyst; carbazole ... See more keywords
Ethyl Pinacol Boronates as Advantageous Precursors for Copper-Mediated Radiofluorination
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DOI: 10.1021/acs.orglett.5c02055
Abstract: (Hetero)aryl pinacol boronic esters are routinely used for 18F-labeling and have accelerated numerous diagnostic and drug discovery programs. An analysis of the current state-of-play, however, highlights a pending challenge. Reports have indicated that some pinacol… read more here.
Keywords: copper mediated; pinacol; pinacol boronates; boronic esters ... See more keywords
Catalytic Enantioselective Pinacol and Meinwald Rearrangements for the Construction of Quaternary Stereo-centers.
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DOI: 10.1021/jacs.9b04551
Abstract: The development of enantioselective pinacol rearrangement is ex-tremely challenging due to the likelihood involvement of the carbeni-um intermediate that renders the stereochemical communication between catalyst and substrate difficult to achieve. Herein, we report chiral N-triflyl… read more here.
Keywords: catalytic enantioselective; rearrangements construction; meinwald rearrangements; pinacol meinwald ... See more keywords
A green and efficient photo-driven route for the selective oxidation of aqueous isopropanol solution to pinacol (C6) with hydrogen peroxide
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DOI: 10.1039/c6nj03848d
Abstract: Selective oxidation of alcohols to highly valued chemicals in a clean manner (e.g., with water as a solvent and O2 or H2O2 as the primary oxidant) is the subject of considerable research attention. This paper… read more here.
Keywords: hydrogen peroxide; solution; selective oxidation; pinacol ... See more keywords
Selective photocatalytic C–C coupling of isopropanol into pinacol with concurrent hydrogen evolution over GONaOH photocatalyst
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DOI: 10.1039/c8nj02348d
Abstract: The average H2 evolution rate could reach 7.36 mmol h−1 over GONaOH photocatalyst. And meanwhile, the sacrificial agent isopropanol could undergo highly selective C–C coupling into pinacol. The isopropanol conversion rate was 77.95%, and the… read more here.
Keywords: isopropanol; selective photocatalytic; gonaoh photocatalyst; pinacol ... See more keywords
Diastereoselective and enantioselective photoredox pinacol coupling promoted by titanium complexes with a red-absorbing organic dye
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DOI: 10.1039/d2sc00800a
Abstract: The pinacol coupling reaction, a reductive coupling of carbonyl compounds that proceeds through the formation of ketyl radicals in the presence of an electron donor, affords the corresponding 1,2-diols in one single step. The photoredox… read more here.
Keywords: red absorbing; pinacol coupling; pinacol; absorbing organic ... See more keywords