1
|
Galeote O, Kennington SCD, Benedito G, Fraedrich L, Davies-Howe E, Costa AM, Romea P, Urpí F, Aullón G, Font-Bardia M, Puigjaner C. Direct, Stereodivergent, and Catalytic Michael Additions of Thioimides to α,β-Unsaturated Aldehydes - Total Synthesis of Tapentadol. Angew Chem Int Ed Engl 2024; 63:e202319308. [PMID: 38231568 DOI: 10.1002/anie.202319308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 01/18/2024]
Abstract
Direct and stereodivergent Michael additions of N-acyl 1,3-thiazinane-2-thiones to α,β-unsaturated aldehydes catalyzed by chiral nickel(II) complexes are reported. The reactions proceed with a remarkable regio-, diastereo-, and enantioselectivity, so access to any of the four potential Michael stereoisomers is granted through the appropriate choice of the chiral ligand of the nickel(II) complex. Simple removal of the heterocyclic scaffold furnishes a wide array of either syn or anti enantiomerically pure derivatives, which can be exploited for the asymmetric synthesis of biologically active compounds, as demonstrated in a new approach to tapentadol. In turn, a mechanism, based on theoretical calculations, is proposed to account for the stereochemical outcome of these transformations.
Collapse
Affiliation(s)
- Oriol Galeote
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Stuart C D Kennington
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Gabriela Benedito
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Lena Fraedrich
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Evan Davies-Howe
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Anna M Costa
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Pedro Romea
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Fèlix Urpí
- Department of Inorganic and Organic Chemistry, Section of Organic Chemistry, Institut de Biomedicina de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Gabriel Aullón
- Department of Inorganic and Organic Chemistry, Section of Inorganic Chemistry and Institut de Química Teòrica i Computacional de la Universitat de Barcelona, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - Mercè Font-Bardia
- X-Ray Diffraction Unity, CCiTUB, Universitat de Barcelona, Carrer Solé i Sabarís 1-3, 08028, Barcelona, Spain
| | - Cristina Puigjaner
- X-Ray Diffraction Unity, CCiTUB, Universitat de Barcelona, Carrer Solé i Sabarís 1-3, 08028, Barcelona, Spain
| |
Collapse
|
2
|
Mellado-Hidalgo M, Romero-Cavagnaro EA, Nageswaran S, Puddu S, Kennington SCD, Costa AM, Romea P, Urpí F, Aullón G, Font-Bardia M. Protected syn-Aldol Compounds from Direct, Catalytic, and Enantioselective Reactions of N-Acyl-1,3-oxazinane-2-thiones with Aromatic Acetals. Org Lett 2023; 25:659-664. [PMID: 36700336 PMCID: PMC9903318 DOI: 10.1021/acs.orglett.2c04254] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A direct and asymmetric syn-aldol reaction of N-acyl-1,3-oxazinane-2-thiones with dialkyl acetals from aromatic acetals in the presence of 2-5 mol % [DTBM-SEGPHOS]NiCl2, TMSOTf, and lutidine has been developed. It has been established that the oxazinanethione heterocycle, used for the first time as a scaffold in asymmetric carbon-carbon bond-forming reactions, can be smoothly removed to give access to a variety of enantiomerically pure compounds with high synthetic value.
Collapse
Affiliation(s)
- Miguel Mellado-Hidalgo
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Elias A. Romero-Cavagnaro
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Sajanthanaa Nageswaran
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Sabrina Puddu
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Stuart C. D. Kennington
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Anna M. Costa
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain,
| | - Pedro Romea
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain,
| | - Fèlix Urpí
- †Department
of Inorganic and Organic Chemistry, Section of Organic
Chemistry and ‡Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain,
| | - Gabriel Aullón
- Department
of Inorganic and Organic Chemistry, Section of Inorganic Chemistry
and Institut de Química Teòrica i Computacional de la
Universitat de Barcelona, Universitat de
Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Mercè Font-Bardia
- X-Ray
Diffraction Unity, CCiTUB, Universitat de
Barcelona, Carrer Solé i Sabarís 1-3, 08028 Barcelona, Spain
| |
Collapse
|