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Oiarbide M, Palomo C. Brønsted Base-Catalyzed Enantioselective α-Functionalization of Carbonyl Compounds Involving π-Extended Enolates. CHEM REC 2023; 23:e202300164. [PMID: 37350363 DOI: 10.1002/tcr.202300164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/06/2023] [Indexed: 06/24/2023]
Abstract
Chiral Brønsted base (BB) catalyzed asymmetric transformations constitute an important tool for synthesis. A meaningful fraction of these transformations proceeds through transiently generated enolate intermediates, which display quite versatile reactivity against a variety of electrophiles. Some years ago, our group became interested in developing BB-catalyzed asymmetric reactions of enolizable carbonyl substrates that involve π-extended enolates in which, besides control of reaction diastereo and enantioselectivity, the site-selectivity control is an additional issue in most cases. In the examples covered in this account the opportunities deployed, and the challenges posed, by these methods are illustrated, with a focus on the generation of quaternary carbon stereocenters. In the way, new bifunctional BB catalysts as well as achiral templates were developed that may find further applications.
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Affiliation(s)
- Mikel Oiarbide
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain
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2
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Yoshiwara Y, Kotani S, Nakajima M. Enantioselective and Chemoselective Phosphine Oxide-catalyzed Aldol Reactions of N-Unprotected Cyclic Carboxyimides. Chemistry 2023; 29:e202203506. [PMID: 36526949 DOI: 10.1002/chem.202203506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/05/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Asymmetric catalytic transformations of N-unprotected cyclic carboxyimides such as succinimides, hydantoins, oxazolidinediones, and glitazones, is a powerful way of directly accessing variety of biologically valuable chiral compounds. Herein, a bis(trichlorosilyl) nucleophilic intermediate formed from cyclic carboxyimides was reacted with aldehydes via (S)-SEGPHOS dioxide (SEGPHOSO), proceeding the aldol reaction in highly enantioselective fashion through a cyclic transition state. Furthermore, N-unprotected carboxyimides were chemoselectively activated, even in the presence of N-alkylated carboxyimides, to undergo stereoselective and chemoselective aldol reactions via in situ silicon tetrachloride activation. The functionalized cyclic carboxyimides is readily derived to the several synthetic units derivatization to various chiral building blocks without unnecessary protection/deprotection steps.
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Affiliation(s)
- Yusaku Yoshiwara
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
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3
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Villaescusa L, Hernández I, Azcune L, Rudi A, Mercero JM, Landa A, Oiarbide M, Palomo C. Rigidified Bis(sulfonyl)ethylenes as Effective Michael Acceptors for Asymmetric Catalysis: Application to the Enantioselective Synthesis of Quaternary Hydantoins. J Org Chem 2023; 88:972-987. [PMID: 36630318 PMCID: PMC10013931 DOI: 10.1021/acs.joc.2c02403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The catalytic, enantio- and diastereoselective addition of hydantoin surrogates II to "rigidified" vinylidene bis(sulfone) reagents is developed, thus overcoming the inability of commonly employed β-substituted vinylic sulfones to react. Adducts are transformed in enantioenriched 5,5-disubstituted hydantoins through hydrolysis and reductive desulfonylation processes providing new structures for eventual bioassays. Density functional theory studies that rationalize the observed reactivity and stereoselectivity trends are also provided.
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Affiliation(s)
- Leire Villaescusa
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Iker Hernández
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Laura Azcune
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Ainhoa Rudi
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - José M Mercero
- Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) & Donostia International Physics Center (DIPC), Donostia 20018, Spain
| | - Aitor Landa
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal 3, Donostia-San Sebastián 20018, Spain
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4
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Methods for substitution of the thioxo group with the oxo group in imidazolidine-2-thione derivatives. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3488-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Voronov A, Botla V, Montanari L, Carfagna C, Mancuso R, Gabriele B, Maestri G, Motti E, Della Ca N. Pd-Catalysed oxidative carbonylation of α-amino amides to hydantoins under mild conditions. Chem Commun (Camb) 2021; 58:294-297. [PMID: 34882163 DOI: 10.1039/d1cc04154a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of palladium-catalysed oxidative carbonylation of unprotected α-amino amides to hydantoins is described here. The selective synthesis of the target compounds was achieved under mild conditions (1 atm of CO), without ligands and bases. The catalytic system overrode the common reaction pathway that usually leads instead to the formation of symmetrical ureas.
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Affiliation(s)
- Aleksandr Voronov
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze, 17/A, Parma 43124, Italy.
| | - Vinayak Botla
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze, 17/A, Parma 43124, Italy.
| | - Luca Montanari
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze, 17/A, Parma 43124, Italy.
| | - Carla Carfagna
- Department of Industrial Chemistry "T. Montanari", University of Bologna, Bologna 40136, Italy
| | - Raffaella Mancuso
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci 12/C, Arcavacata di Rende 87036, Cosenza, Italy
| | - Bartolo Gabriele
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci 12/C, Arcavacata di Rende 87036, Cosenza, Italy
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze, 17/A, Parma 43124, Italy. .,CIRCC (Interuniversity Consortium Chemical Reactivity and Catalysis), via Celso Ulpiani 27, Bari 70126, Italy
| | - Elena Motti
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze, 17/A, Parma 43124, Italy. .,CIRCC (Interuniversity Consortium Chemical Reactivity and Catalysis), via Celso Ulpiani 27, Bari 70126, Italy
| | - Nicola Della Ca
- Department of Chemistry, Life Sciences and Environmental Sustainability (SCVSA), University of Parma, Parco Area delle Scienze, 17/A, Parma 43124, Italy. .,CIRCC (Interuniversity Consortium Chemical Reactivity and Catalysis), via Celso Ulpiani 27, Bari 70126, Italy
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An G, Liu J. TfOH/DMEDA‐Mediated Cyclization of 2‐(3‐Arylthioureido)‐amide to Form 2‐Thioimidazoline‐4‐ones. ChemistrySelect 2021. [DOI: 10.1002/slct.202100661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Guanghui An
- School of Petroleum and Chemical Engineering Dalian University of Technology, Panjin Campus Panjin Liaoning Province 124221 P. R. China
| | - Jianhui Liu
- School of Petroleum and Chemical Engineering Dalian University of Technology, Panjin Campus Panjin Liaoning Province 124221 P. R. China
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian Liaoning Province 116024 P. R. China
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Keel KL, Tepe J. The preparation of (4H)-imidazol-4-ones and their application in the total synthesis of natural products. Org Chem Front 2020; 7:3284-3311. [PMID: 33796321 DOI: 10.1039/d0qo00764a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
(4H)-Imidazol-4-ones are an important scaffold for a variety of applications, including natural products, medicine, agriculture, and other applications. Over the years, there have been a number of preparations published for the synthesis of imidazol-4-ones. This review discusses the progress made on the synthesis of imidazol-4-ones, and their application towards the total synthesis of a range of imidazol-4-one containing natural products. Emphasis is made on areas of the field that still need progress.
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Cativiela C, Ordóñez M, Viveros-Ceballos JL. Stereoselective synthesis of acyclic α,α-disubstituted α-amino acids derivatives from amino acids templates. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130875] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Izquierdo J, Demurget N, Landa A, Brinck T, Mercero JM, Dinér P, Oiarbide M, Palomo C. Asymmetric Synthesis of Adjacent Tri- and Tetrasubstituted Carbon Stereocenters: Organocatalytic Aldol Reaction of an Hydantoin Surrogate with Azaarene 2-Carbaldehydes. Chemistry 2019; 25:12431-12438. [PMID: 31318987 DOI: 10.1002/chem.201902817] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/15/2019] [Indexed: 12/13/2022]
Abstract
A bifunctional amine/squaramide catalyst promoted direct aldol addition of an hydantoin surrogate to pyridine 2-carbaldehyde N-oxides to afford adducts bearing two vicinal tertiary/quaternary carbons in high diastereo- and enantioselectivity (d.r. up to >20:1; ee up to 98 %) is reported. Acid hydrolysis of adducts followed by reduction of the N-oxide group yields enantiopure carbinol-tethered quaternary hydantoin-azaarene conjugates with densely functionalized skeletons. DFT studies of the potential energy surface (B3LYP/6-31+G(d)+CPCM (dichloromethane)) of the reaction correlate the activity of different catalysts and support an intramolecular hydrogen-bond-assisted activation of the squaramide moiety in the transition state of the catalytic reaction.
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Affiliation(s)
- June Izquierdo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018, San Sebastián, Spain
| | - Noémie Demurget
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018, San Sebastián, Spain
| | - Aitor Landa
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018, San Sebastián, Spain
| | - Tore Brinck
- Department of Chemistry, KTH Royal Institute of, Technology, Teknikringen 30, 100 44, Stockholm, Sweden
| | - Jose M Mercero
- Kimika Fakultatea, Euskal Herriko Unibertsitatea, (UPV/EHU) & Donostia International Physics Center (DIPC), Donostia, Spain
| | - Peter Dinér
- Department of Chemistry, KTH Royal Institute of, Technology, Teknikringen 30, 100 44, Stockholm, Sweden
| | - Mikel Oiarbide
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018, San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018, San Sebastián, Spain
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11
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Giannakopoulou E, Pardali V, Skrettas I, Zoidis G. Transesterification instead of N‐Alkylation: An Intriguing Reaction. ChemistrySelect 2019. [DOI: 10.1002/slct.201900263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Erofili Giannakopoulou
- School of Health Sciences, Faculty of PharmacyDepartment of Pharmaceutical ChemistryNational and Kapodistrian University of Athens Panepistimiopolis-Zografou GR-15771, A thens Greece
| | - Vasiliki Pardali
- School of Health Sciences, Faculty of PharmacyDepartment of Pharmaceutical ChemistryNational and Kapodistrian University of Athens Panepistimiopolis-Zografou GR-15771, A thens Greece
| | - Ioannis Skrettas
- School of Health Sciences, Faculty of PharmacyDepartment of Pharmaceutical ChemistryNational and Kapodistrian University of Athens Panepistimiopolis-Zografou GR-15771, A thens Greece
| | - Grigoris Zoidis
- School of Health Sciences, Faculty of PharmacyDepartment of Pharmaceutical ChemistryNational and Kapodistrian University of Athens Panepistimiopolis-Zografou GR-15771, A thens Greece
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