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Merging Regiodivergent Catalysis with Atom-Economical Radical Arylation.

ABSTRACT: A titanocene-catalyzed regiodivergent radical arylation is described that allows access to either enantiomerically pure tetrahydroquinolines or indolines from a common starting material. The regioselectivity of epoxide opening that results in the high selectivity of heterocycle formation is controlled by two factors, the absolute configuration of the enantiopure ligands of the (C₅ H₄ R)₂ TiX₂ catalyst and the inorganic ligand X (X=Cl, OTs). The overall reaction is atom-economical and constitutes a radical Friedel-Crafts alkylation.

SUBMITTER: Muhlhaus F

PROVIDER: S-EPMC6852184 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Merging Regiodivergent Catalysis with Atom-Economical Radical Arylation.

Mühlhaus Felix F Weißbarth Hendrik H Dahmen Tobias T Schnakenburg Gregor G Gansäuer Andreas A

Angewandte Chemie (International ed. in English) 20190828 40

A titanocene-catalyzed regiodivergent radical arylation is described that allows access to either enantiomerically pure tetrahydroquinolines or indolines from a common starting material. The regioselectivity of epoxide opening that results in the high selectivity of heterocycle formation is controlled by two factors, the absolute configuration of the enantiopure ligands of the (C5 H4 R)2 TiX2 catalyst and the inorganic ligand X (X=Cl, OTs). The overall ...[more]

PMID: 31394024

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