Lewis Acid‐Catalyzed Diastereoselective C−C Bond Insertion of Diazo Esters into Secondary Benzylic Halides for the Synthesis of α,β‐Diaryl‐β‐haloesters
作者:Fei Wang、Yoshihiro Nishimoto、Makoto Yasuda
DOI:10.1002/anie.202204462
日期:2022.7.18
Lewis acid-catalyzed carbon–carbon bond insertion of α-diazo esters into secondary benzylic halides is reported. Herein, the carbon chain elongation of acyclic benzylic halides and ring expansion in cyclic versions were realized to afford α,β-diaryl-β-halo carbonyl compounds with excellent diastereoselectivity. Computational study charted a specific mechanism involving the Lewis acid-promoted cleavage/re-formation