Hu Y, Hervieu C, Merino E, Nevado C. Asymmetric, Remote C(sp
3)-H Arylation via
Sulfinyl-Smiles Rearrangement.
Angew Chem Int Ed Engl 2024;
63:e202319158. [PMID:
38506603 DOI:
10.1002/anie.202319158]
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Abstract
An efficient asymmetric remote arylation of C(sp3)-H bonds under photoredox conditions is described here. The reaction features the addition radicals to a double bond followed by a site-selective radical translocation (1,n-hydrogen atom transfer) as well as a stereocontrolled aryl migration via sulfinyl-Smiles rearrangement furnishing a wide range of chiral α-arylated amides with up to >99 : 1 er. Mechanistic studies indicate that the sulfinamide group governs the stereochemistry of the product with the aryl migration being the rate determining step preceded by a kinetically favored 1,n-HAT process.
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