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Tan YX, Li S, Song L, Zhang X, Wu YD, Sun J. Ruthenium-Catalyzed Geminal Hydroborative Cyclization of Enynes. Angew Chem Int Ed Engl 2022; 61:e202204319. [PMID: 35596681 DOI: 10.1002/anie.202204319] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Indexed: 12/25/2022]
Abstract
Disclosed here is the first geminal (gem-) hydroborative cyclization of enynes. Different from known hydroborative cyclizations, this process adds hydrogen and boron to the same position, leading to a new reaction mode. With [Cp*RuCl]4 as catalyst, a range of gem-hydroborated bicyclic products bearing a cyclopropane unit could be rapidly assembled from simple enyne substrates. Control experiments and density functional theory (DFT) calculations provided important insights into the reaction mechanism. Notably, two major competing pathways may operate with substrate-dependence. 1,6-Enynes favor initial oxidative cyclometalation to form a ruthenacyclopentene intermediate prior to engaging hydroborane, while other enynes (e.g., 1,7-enynes) that lack strong propensity toward cyclization prefer initial alkyne gem-(H,B)-addition to form an α-boryl ruthenium carbene followed by intramolecular olefin cyclopropanation. This process also represents the first ruthenium-catalyzed enyne hydroborative cyclization.
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Affiliation(s)
- Yun-Xuan Tan
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Shijia Li
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.,Shenzhen Bay Laboratory, Shenzhen, 518055, China
| | - Lijuan Song
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, Shenzhen, 518055, China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Yun-Dong Wu
- Shenzhen Bay Laboratory, Shenzhen, 518055, China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Jianwei Sun
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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2
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Tan YX, Li S, Song L, Zhang X, Wu YD, Sun J. Ruthenium‐Catalyzed Geminal Hydroborative Cyclization of Enynes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yun-Xuan Tan
- Hong Kong University of Science and Technology School of Science Department of Chemistry HONG KONG
| | - Shijia Li
- Hong Kong University of Science and Technology School of Science Department of Chemistry HONG KONG
| | - Lijuan Song
- Harbin Institute of Technology Shenzhen School of Science CHINA
| | - Xinhao Zhang
- Peking University Shenzhen Graduate School Lab of Computational Chemistry and Drug Design CHINA
| | - Yun-Dong Wu
- Peking University Shenzhen Graduate School Lab of Computational Chemistry and Drug Design CHINA
| | - Jianwei Sun
- Hong Kong University of Science and Technology Department of Chemistry Clear Water Bay Hong Kong HONG KONG
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3
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Lodhi R, Prakash M, Samanta S. Diastereoselective desymmetrization reactions of prochiral para-quinamines with cyclopropenes generated in situ: access to fused hydroindol-5-one scaffolds. Org Biomol Chem 2021; 19:7129-7133. [PMID: 34369544 DOI: 10.1039/d1ob01322j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Interesting desymmetric [3 + 2] annulation reactions between p-quinamines as prochiral N-donors and 2-aroyl-1-chlorocyclopropanecarboxylates facilitated by a base are reported. This successive double Michael reaction delivered a unique class of cyclopropane-fused hydoindol-5-one frameworks, each having four contiguous stereogenic centers, with three of them being fully substituted. Moreover, this method was found to provide acceptable chemical yields with promising diastereoselectivities (dr of up to ≤95 : 5) and to work with a variety of substrates. Importantly, a polycyclic tacrine analogue used to treat Alzheimer's disease was synthesized using our developed method.
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Affiliation(s)
- Rajni Lodhi
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, India.
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4
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Havare N. Effective synthesis of bicyclodienes via palladium-catalyzed asymmetric allylic alkylation and ruthenium-catalyzed cycloisomerization. Turk J Chem 2021; 44:1445-1462. [PMID: 33488243 PMCID: PMC7772093 DOI: 10.3906/kim-2004-81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/18/2020] [Indexed: 12/25/2022] Open
Abstract
[n.3.0]Bicycles (n = 3–6) can be synthesized using palladium-catalyzed asymmetric allylic alkylation followed by ruthenium-catalyzed cycloisomerization. New types of triarylphosphino-1,2-diaminooxazoline ligands show the same high levels of enantioselectivity observed with Trost ligand when employed in Pd-catalyzed allylic alkylation reactions. The enyne products of these allylic alkylation reactions were further elaborated using a Ru-catalyzed redox isomerization process, for which a mechanism is proposed.
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Affiliation(s)
- Nizam Havare
- Department of Chemistry, School of Humanities & Sciences, Stanford University, Stanford, California 94305-5580 United States
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5
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Gloriozov IP, Dem'yanov PI, Zhulyaev NS, Nechaev MS, Oprunenko YF, Gam F, Saillard JY, Kuznetsov AE. DFT Investigation of the η 6 ⇌ η 6-Inter-ring Haptotropic Rearrangement of the Group 8 Metals Complexes [(graphene)MCp] + (M = Fe, Ru, Os). J Phys Chem A 2021; 125:366-375. [PMID: 33356252 DOI: 10.1021/acs.jpca.0c08251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metalcyclopentadienyl complexes (MCp)+ (M = Fe, Ru, Os) bound to the large polyaromatic hydrogenated hydrocarbon (PAH) C96H24 used as a model for pristine graphene have been studied using a density functional theory (DFT) generalized gradient approximation (PBE functional) to reveal their structural features and dynamic behavior. The inter-ring haptotropic rearrangements (IRHRs) for these complexes were shown to occur via two transition states and one intermediate. The energy barriers of the η6 ⇌ η6 IRHRs of the (MCp)+ unit were found to be 30, 27, and 29 kcal/mol for M = Fe, Ru, and Os, respectively. These values are significantly lower than the values found previously for smaller PAHs. Both polar and nonpolar solvents were found not to affect significantly the energy barrier heights. Investigated transition metal complexes could be used in general as catalysts in the design of novel derivatives or materials with promising properties. Metalcyclopentadienyl complexes (MCp)+ of PAHs show catalytic properties mainly due to their structural details as well as their important characteristic of inter-ring haptotropic rearrangement. IRHRs take place usually by intramolecular mechanisms. During IRHRs, the MLn organometallic groups (OMGs) undergo shifting along the PAH plane and could coordinate additional reagents, which is important for catalysis. Large PAHs such as graphene, fullerenes, and nanotubes possess intrinsic anticancer activity, and numerous arene complexes of Ru and Os have been proven to have anticancer properties as well. We suppose that coordinating Ru or Os to very large PAHs could synergistically increase the anticancer activity of resulting complexes.
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Affiliation(s)
- Igor P Gloriozov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Piotr I Dem'yanov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Nikolay S Zhulyaev
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Mikhail S Nechaev
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia.,A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia
| | - Yuri F Oprunenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
| | - Franck Gam
- ISCR-UMR 6226, Université Rennes, CNRS, F-35000 Rennes, France
| | | | - Aleksey E Kuznetsov
- Department of Chemistry, Universidad Técnica Federico Santa Maria, Av. Santa Maria 6400, Vitacura, 7660251 Santiago, Chile
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6
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Chaki BM, Takenaka K, Zhu L, Tsujihara T, Takizawa S, Sasai H. Enantioselective One‐pot Synthesis of 3‐Azabicyclo[3.1.0]hexanes
via
Allylic Substitution and Oxidative Cyclization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bijan Mohon Chaki
- The Institute of Scientific and Industrial ResearchOsaka University, Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Kazuhiro Takenaka
- The Institute of Scientific and Industrial ResearchOsaka University, Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Linpeng Zhu
- The Institute of Scientific and Industrial ResearchOsaka University, Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Tetsuya Tsujihara
- The Institute of Scientific and Industrial ResearchOsaka University, Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial ResearchOsaka University, Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial ResearchOsaka University, Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
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7
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Gao M, Gao Q, Hao X, Wu Y, Zhang Q, Liu G, Liu R. Ruthenium Carbene-Mediated Construction of Strained Allenes via the Enyne Cross-Metathesis/Cyclopropanation of 1,6-Enynes. Org Lett 2020; 22:1139-1143. [PMID: 31977229 DOI: 10.1021/acs.orglett.9b04662] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report on the unprecedented dimerization of 1,6-enynes using a commercially available ruthenium complex RuCl2(PPh3)3, which results in a series of bicyclo[3.1.0]hexyl allene derivatives in moderate to excellent yields. Mechanistic investigation indicates that the in-situ-generated ruthenium vinylidene undergoes a site-selective metathesis process to provide allenyl ruthenium carbene, which can be intramolecularly trapped by the pendent C=C bond of enyne through a [2 + 2] cycloaddition/metal elimination process.
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Affiliation(s)
- Ming Gao
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
| | - Qiangqiang Gao
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
| | - Xiangbin Hao
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
| | - Ying Wu
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
| | - Qingmin Zhang
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
| | - Guohua Liu
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
| | - Rui Liu
- Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Key Laboratory of Resource Chemistry of Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials , Shanghai Normal University , Shanghai , China
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8
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Riaño I, Uria U, Reyes E, Carrillo L, Vicario JL. Organocatalytic Transannular Approach to Stereodefined Bicyclo[3.1.0]hexanes. J Org Chem 2018. [PMID: 29529372 DOI: 10.1021/acs.joc.8b00165] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A diastereodivergent approach to highly substituted bicyclo[3.1.0]hexanes has been developed through a transannular alkylation reaction that builds up the bicyclic core employing asymmetric organocatalysis as the tool for the installation of all stereocenters. On one hand, a Michael/Michael cascade process between enals and 4-alkenyl sulfamidate imines under the iminium/enamine activation manifold provides an oxathiazole-2,2-dioxide-fused cyclohexane adduct that, after isolation, is subsequently engaged in a transannular alkylation/hydrolysis through enamine activation by the use of a primary amine. On the other hand, the corresponding C-2 epimers are directly obtained from the same starting materials in a single operation through a cascade Michael/Michael/transannular alkylation/hydrolysis sequence through sequential iminium/enamine/enamine combination of aminocatalytic activation manifolds.
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Affiliation(s)
- Iker Riaño
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Uxue Uria
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Efraím Reyes
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Luisa Carrillo
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
| | - Jose L Vicario
- Department of Organic Chemistry II , University of the Basque Country (UPV/EHU) , P.O. Box 644 , 48080 Bilbao , Spain
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9
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Trost BM, Tracy JS. Organic Synthesis. Use of Alkynes as a Key to Innovation in Designing Structure for Function. Isr J Chem 2017. [DOI: 10.1002/ijch.201700077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Barry M. Trost
- Chemistry, Stanford University 337 Campus Dr., Rm. 306 Stanford, CA 94305-5080
| | - Jacob S. Tracy
- Chemistry, Stanford University 337 Campus Dr., Rm. 306 Stanford, CA 94305-5080
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