Three-Way Chemodivergent Derivatization of Non-Activated 2‑Arylphenyl Benzyl Ethers

A thermally controlled rare chemodivergent mechanistic trifurcation has been found through experimental and computational efforts. Notably, one of the available paths in this three-way mechanism allows for an unprecedented dearomatization reactivity of non-activated 2-arylphenyl benzyl ethers under very mild thermal conditions after Csp3–H bond functionalization through α-lithiation, bringing easy access to regioselectively functionalized dearomatized benzochromene scaffolds via anionic dearomatization enabled by carbolithiation of a non-activated aromatic ring. A [1,2]-Wittig rearrangement and a benzyl migration reaction complete the available product alternatives. Moreover, a delicate but useable balance within this reaction path manifold permits steering the reactivity toward each of the three possible products. A kinetically-, thermodynamically- and quantum tunneling-controlled path can be selected to afford one of its three possible products by only tuning reaction time and temperature.

• Publication year

  2025

• Venue

  Journal of Organic Chemistry

• Publication date

  2025-08-07

• Fields of study

  Medicine, Chemistry

• Identifiers
  DOI 10.1021/acs.joc.5c01460PMID 40773667PMCID 12381931
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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