Abstract

Abstract Under an atmospheric pressure of carbon monoxide, photoinduced reductive carbonylation of organic halides (RX) with samarium diiodide (SmI2) occurs to afford the corresponding unsymmetrical ketones (RC(O)CH2R) in good yields. Mechanistic insight into this carbonylation, especially the pathway for the generation of an acylsamarium species (RC(O)SmI2) as a key intermediate, is also investigated in detail.

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