Efficient Reduction of Electron-Deficient Alkenes Enabled by a Photoinduced Hydrogen Atom Transfer

02 June 2020, Version 2
This content is a preprint and has not undergone peer review at the time of posting.


Direct hydrogen atom transfer from a photoredox-generated Hantzsch ester radical cation to electron-deficient alkenes has enabled the
development of an efficient formal hydrogenation under mild, operationally simple conditions. The HAT-driven mechanism, key to circumvent
the problems associated with the low electron affinity of alkenes, is supported by experimental and computational studies. The reaction is applied
to a variety of cinnamate derivatives and related structures, irrespective of the presence of electron-donating or electron-withdrawing
substituents in the aromatic ring and with good functional group compatibility.


Photoredox Catalysts
Hydrogen Atom Transfer
Hantzsch ester
Transfer Hydrogenation

Supplementary materials

HAT reduction QMUL - ESI


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