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All Outputs (11)

Visible?Light?Driven Strain?Increase Ring Contraction Allows the Synthesis of Cyclobutyl Boronic Esters (2020)
Journal Article

There are a limited number of ring?contraction methodologies which convert readily available five?membered rings into strained four?membered rings. Here we report a photo?induced radical?mediated ring contraction of five?membered?ring alkenyl boronat... Read More about Visible?Light?Driven Strain?Increase Ring Contraction Allows the Synthesis of Cyclobutyl Boronic Esters.

Radical Addition to Strained σ-Bonds Enables the Stereocontrolled Synthesis of Cyclobutyl Boronic Esters (2019)
Journal Article

While radical additions to π-bonds are well established, additions to σ-bonds are far less explored. We have found that electron deficient radicals derived from alkyl iodides under visible light irradiation add to the central strained bond of bicyclo... Read More about Radical Addition to Strained σ-Bonds Enables the Stereocontrolled Synthesis of Cyclobutyl Boronic Esters.

Merging Photoredox with 1,2-Metallate Rearrangements: The Photochemical Alkylation of Vinyl Boronate Complexes (2017)
Journal Article

© 2017 American Chemical Society. Vinyl boronates react with electron-deficient alkyl iodides in the presence of visible light to give boronic esters in which two new C-C bonds have been created. The reaction occurs by radical addition of an electron... Read More about Merging Photoredox with 1,2-Metallate Rearrangements: The Photochemical Alkylation of Vinyl Boronate Complexes.

Visible-light excitation of iminium ions enables the enantioselective catalytic ?-alkylation of enals (2017)
Journal Article

© 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Chiral iminium ions - generated upon condensation of α,β-unsaturated aldehydes and amine catalysts - are used extensively by chemists to make chiral molecules in enant... Read More about Visible-light excitation of iminium ions enables the enantioselective catalytic ?-alkylation of enals.

Enantioselective Organocatalytic Alkylation of Aldehydes and Enals Driven by the Direct Photoexcitation of Enamines (2015)
Journal Article

Disclosed herein is a photo-organocatalytic enantioselective ?- and ?-alkylation of aldehydes and enals, respectively, with bromomalonates. The chemistry uses a commercially available aminocatalyst and occurs under illumination by a fluorescent light... Read More about Enantioselective Organocatalytic Alkylation of Aldehydes and Enals Driven by the Direct Photoexcitation of Enamines.