Deconstruction of electron-deficient alkenes to carbonyl constituents by light-induced hydrogen atom transfer?

Green Chemistry Pub Date: 2023-01-11 DOI: 10.1039/D2GC04424B

Abstract

Deconstruction of alkenes to their carbonyl derivatives is a widely used protocol in synthetic organic chemistry and several reaction conditions have been demonstrated for electron-rich and unconjugated alkenes. However, such reactions of electron-deficient and conjugated alkenes are highly challenging. In this report, we have demonstrated a light-promoted water-mediated NBS photoinitiated cleavage of electron-deficient conjugated alkenes under mild and greener conditions via the hydrogen atom transfer mechanism. Additionally, this methodology is demonstrated as a deprotection step for carbonyl groups. This protocol works at room temperature in an aqueous medium with a wide range of functional group tolerance and high regioselectivity.

Graphical abstract: Deconstruction of electron-deficient alkenes to carbonyl constituents by light-induced hydrogen atom transfer
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