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Zhao C, Besset T, Legault CY, Jubault P. Experimental and Computational Studies for the Synthesis of Functionalized Cyclopropanes from 2-Substituted Allylic Derivatives with Ethyl Diazoacetate. Chemistry 2024; 30:e202303070. [PMID: 37985211 DOI: 10.1002/chem.202303070] [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: 09/21/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
The catalytic asymmetric synthesis of highly functionalized cyclopropanes from 2-substituted allylic derivatives is reported. Using ethyl diazo acetate, the reaction, catalyzed by a chiral ruthenium complex (Ru(II)-Pheox), furnished the corresponding easily separable cis and trans cyclopropanes in moderate to high yields (32-97 %) and excellent ee (86-99 %). This approach significantly extends the portfolio of accessible enantioenriched cyclopropanes from an underexplored class of olefins. DFT calculations suggest that an outer-sphere mechanism is operative in this system.
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Affiliation(s)
- Chengtao Zhao
- INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Normandie Univ., 76000, Rouen, France
| | - Tatiana Besset
- INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Normandie Univ., 76000, Rouen, France
| | - Claude Y Legault
- Département de Chimie, Université de Sherbrooke, 2500 boul. de l'Université, D1-3029, Sherbrooke, Canada
| | - Philippe Jubault
- INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Normandie Univ., 76000, Rouen, France
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2
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Nguyen T, Sreekumar S, Wang S, Jiang Q, Montel F, Buono F. Enantioselective Synthesis of trans-Disubstituted Cyclopropyltrifluoroborate Building Blocks through Ru-Catalyzed Cyclopropanation. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thach Nguyen
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877-0378, United States
| | - Sanil Sreekumar
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877-0378, United States
| | - Shuai Wang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877-0378, United States
| | - Qi Jiang
- Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877-0378, United States
| | - Florian Montel
- Discovery Research, Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co. KG, 65 Birkendorfer Strasse, Biberach an der Riss 88400, Germany
| | - Frederic Buono
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877-0378, United States
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3
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Planas F, Costantini M, Montesinos-Magraner M, Himo F, Mendoza A. Combined Experimental and Computational Study of Ruthenium N-Hydroxyphthalimidoyl Carbenes in Alkene Cyclopropanation Reactions. ACS Catal 2021; 11:10950-10963. [PMID: 34504736 PMCID: PMC8419840 DOI: 10.1021/acscatal.1c02540] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/05/2021] [Indexed: 01/14/2023]
Abstract
A combined experimental-computational approach has been used to study the cyclopropanation reaction of N-hydroxyphthalimide diazoacetate (NHPI-DA) with various olefins, catalyzed by a ruthenium-phenyloxazoline (Ru-Pheox) complex. Kinetic studies show that the better selectivity of the employed redox-active NHPI diazoacetate is a result of a much slower dimerization reaction compared to aliphatic diazoacetates. Density functional theory calculations reveal that several reactions can take place with similar energy barriers, namely, dimerization of the NHPI diazoacetate, cyclopropanation (inner-sphere and outer-sphere), and a previously unrecognized migratory insertion of the carbene into the phenyloxazoline ligand. The calculations show that the migratory insertion reaction yields an unconsidered ruthenium complex that is catalytically competent for both the dimerization and cyclopropanation, and its relevance is assessed experimentally. The stereoselectivity of the reaction is argued to stem from an intricate balance between the various mechanistic scenarios.
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Affiliation(s)
| | | | - Marc Montesinos-Magraner
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Fahmi Himo
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Abraham Mendoza
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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4
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Phan Thi Thanh N, Dang Thi Thu H, Tone M, Inoue H, Iwasa S. Synthesis of Oxindole Derivatives via Intramolecular C–H Insertion of Diazoamides Using Ru(II)-Pheox Catalyst. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Inoue H, Phan Thi Thanh N, Fujisawa I, Iwasa S. Synthesis of Forms of a Chiral Ruthenium Complex Containing a Ru-C olefin(sp 2) Bond and Their Application to Catalytic Asymmetric Cyclopropanation Reactions. Org Lett 2020; 22:1475-1479. [PMID: 31990195 DOI: 10.1021/acs.orglett.0c00050] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Organometallic complexes [Ru-Colefin(sp2)-Ru(II)-Pheox 2a-2d] containing a Ru-Colefin(sp2) bond have been prepared from unsaturated chiral oxazoline derivatives and evaluated for asymmetric cyclopropanation reactions. The corresponding optically active cyclopropanes were obtained with high yields and high stereoselectivities (≥99/<1 trans/cis, 99% trans ee). The enantioselectivities were found to be affected by the geminal substituent on the Ru-C(sp2) bond. In particular, Ru(II)-Prox catalyst 2c, in which there was no geminal substituent on the metal, was shown to have the highest enantioselectivities.
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Affiliation(s)
- Hayato Inoue
- Department of Applied Chemistry and Life Science , Toyohashi University of Technology , 1-1 Hibarigaoka , Tempaku, Toyohashi , Aichi 441-8580 , Japan
| | - Nga Phan Thi Thanh
- Department of Applied Chemistry and Life Science , Toyohashi University of Technology , 1-1 Hibarigaoka , Tempaku, Toyohashi , Aichi 441-8580 , Japan
| | - Ikuhide Fujisawa
- Department of Applied Chemistry and Life Science , Toyohashi University of Technology , 1-1 Hibarigaoka , Tempaku, Toyohashi , Aichi 441-8580 , Japan
| | - Seiji Iwasa
- Department of Applied Chemistry and Life Science , Toyohashi University of Technology , 1-1 Hibarigaoka , Tempaku, Toyohashi , Aichi 441-8580 , Japan
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6
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2018. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.213051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Shao X, Malcolmson SJ. Catalytic Enantio- and Diastereoselective Cyclopropanation of 2-Azadienes for the Synthesis of Aminocyclopropanes Bearing Quaternary Carbon Stereogenic Centers. Org Lett 2019; 21:7380-7385. [PMID: 31465235 PMCID: PMC6790987 DOI: 10.1021/acs.orglett.9b02692] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We report the catalytic enantio- and diastereoselective preparation of aminocyclopropanes by the cyclopropanation of terminal and (Z)-internal 2-azadienes with donor/acceptor carbenes derived from α-diazoesters. The resulting cyclopropanes bear quaternary carbon stereogenic centers vicinal to the amino-substituted carbon and are formed as a single diastereomer in up to 99:1 er and 97% yield with 0.5 mol % of Rh2(DOSP)4 and only 1.5 equiv of the diazo reagent. Transformations with internal azadienes afford cyclopropanes with three contiguous stereogenic centers.
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Affiliation(s)
- Xinxin Shao
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United State
| | - Steven J. Malcolmson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United State
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Phan Thi Thanh N, Tone M, Inoue H, Fujisawa I, Iwasa S. Highly stereoselective intramolecular Buchner reaction of diazoacetamides catalyzed by a Ru(ii)–Pheox complex. Chem Commun (Camb) 2019; 55:13398-13401. [DOI: 10.1039/c9cc06889a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This work reports the first efficient enantioselective intramolecular Buchner reaction of diazoacetamides.
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Affiliation(s)
- Nga Phan Thi Thanh
- Department of Applied Chemistry and Life Science
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Masaya Tone
- Department of Applied Chemistry and Life Science
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Hayato Inoue
- Department of Applied Chemistry and Life Science
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Ikuhide Fujisawa
- Department of Applied Chemistry and Life Science
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Seiji Iwasa
- Department of Applied Chemistry and Life Science
- Toyohashi University of Technology
- Toyohashi
- Japan
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