Enantioselective C-H oxidation is a standing chemical challenge foreseen as a powerful tool to transform readily available organic molecules into precious oxygenated building blocks. Here, we describe a catalytic enantioselective hydroxylation of tertiary C-H bonds in cyclohexane scaffolds with H2O2, an evolved manganese catalyst that provides structural complementary to the substrate similarly to the lock-and-key recognition operating in enzymatic active sites. Theoretical calculations unveil that enantioselectivity is governed by the precise fitting of the substrate scaffold into the catalytic site, through a network of complementary weak non-covalent interactions. Stereoretentive C(sp3)-H hydroxylation results in a single-step generation of multiple stereogenic centers (up to 4) that can be orthogonally manipulated by conventional methods providing rapid access, from a single precursor to a variety of chiral scaffolds.

Palone, A., Casadevall, G., Ruiz-Barragan, S., Call, A., Osuna, S., Bietti, M., et al. (2023). C–H Bonds as Functional Groups: Simultaneous Generation of Multiple Stereocenters by Enantioselective Hydroxylation at Unactivated Tertiary C–H Bonds. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 145(29), 15742-15753 [10.1021/jacs.2c10148].

C–H Bonds as Functional Groups: Simultaneous Generation of Multiple Stereocenters by Enantioselective Hydroxylation at Unactivated Tertiary C–H Bonds

Massimo Bietti
;
2023-01-01

Abstract

Enantioselective C-H oxidation is a standing chemical challenge foreseen as a powerful tool to transform readily available organic molecules into precious oxygenated building blocks. Here, we describe a catalytic enantioselective hydroxylation of tertiary C-H bonds in cyclohexane scaffolds with H2O2, an evolved manganese catalyst that provides structural complementary to the substrate similarly to the lock-and-key recognition operating in enzymatic active sites. Theoretical calculations unveil that enantioselectivity is governed by the precise fitting of the substrate scaffold into the catalytic site, through a network of complementary weak non-covalent interactions. Stereoretentive C(sp3)-H hydroxylation results in a single-step generation of multiple stereogenic centers (up to 4) that can be orthogonally manipulated by conventional methods providing rapid access, from a single precursor to a variety of chiral scaffolds.
2023
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/06
English
Con Impact Factor ISI
Palone, A., Casadevall, G., Ruiz-Barragan, S., Call, A., Osuna, S., Bietti, M., et al. (2023). C–H Bonds as Functional Groups: Simultaneous Generation of Multiple Stereocenters by Enantioselective Hydroxylation at Unactivated Tertiary C–H Bonds. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 145(29), 15742-15753 [10.1021/jacs.2c10148].
Palone, A; Casadevall, G; Ruiz-Barragan, S; Call, A; Osuna, S; Bietti, M; Costas, M
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/346328
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