1
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Sahoo SS, Kataria P, Kontham R. Concise and collective total syntheses of 2,4-disubstituted furan-derived natural products from hydroxyoxetanyl ketones. Org Biomol Chem 2024; 22:1475-1483. [PMID: 38284832 DOI: 10.1039/d3ob01924a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
The furan moiety, prevalent in bioactive natural products and essential drugs, presents intriguing structural features that have spurred our exploration into streamlined chemical synthesis routes for related natural products. In this study, we demonstrate the concise total synthesis of eight 2,4-disubstituted furan-derived natural products (including methylfuroic acid, rabdoketones A and B, paleofurans A and B, tournefolin C, and shikonofurans A and B). Our methodology revolves around the utilization of hydroxyoxetanyl ketones as pivotal intermediates. The approach encompasses transformations such as selective organo-catalyzed cross-ketol addition, synthesis of hydroxymethyl-tethered furans through Bi(OTf)3 catalyzed dehydrative cycloisomerization of α-hydroxyoxetanyl ketones, and a hydrogen atom transfer (HAT)-mediated oxidation of primary alcohols into the corresponding acids. This comprehensive synthetic strategy highlights the versatility of hydroxyoxetanyl ketones as invaluable building blocks in the synthesis of furan-containing natural products.
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Affiliation(s)
- Shubhranshu Shekhar Sahoo
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Priyanka Kataria
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Ravindar Kontham
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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2
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Nigríni M, Bhosale VA, Císařová I, Veselý J. Enantioenriched 1,4-Benzoxazepines via Chiral Brønsted Acid-Catalyzed Enantioselective Desymmetrization of 3-Substituted Oxetanes. J Org Chem 2023; 88:17024-17036. [PMID: 37987742 PMCID: PMC10729023 DOI: 10.1021/acs.joc.3c01929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/23/2023] [Accepted: 11/01/2023] [Indexed: 11/22/2023]
Abstract
Herein, we present a highly enantioselective desymmetrization of 3-substituted oxetanes enabled by a confined chiral phosphoric acid. This metal-free process allows effective access to chiral seven-membered 1,4-benzoxazepines with a high degree of enantiocontrol, under mild reaction conditions. The developed synthetic strategy tolerates a broad substrate scope and demonstrates its synthetic utility in various enantioselective product transformations, thus proving its effectiveness in diverse scenarios.
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Affiliation(s)
- Martin Nigríni
- Department
of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Viraj A. Bhosale
- Department
of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Ivana Císařová
- Department
of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Jan Veselý
- Department
of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
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3
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Zhang CY, Cao K, Yang HB, Ding LF, Yang J. Cu(OTf) 2/NBS-Mediated Tandem Reaction of 1-Cinnamyl Alcohol- o-Carboranes via Ring Opening of Oxetane with Arenes: An Alternative Approach for the Synthesis of C-Alkenyl- o-Carboranes. J Org Chem 2022; 87:10928-10936. [PMID: 35921205 DOI: 10.1021/acs.joc.2c01217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Cu(OTf)2/NBS-mediated tandem reaction of 1-cinnamyl alcohol-o-carboranes for the synthesis of C-alkenyl-o-carboranes has been developed. Mechanism studies demonstrated that the Cu(OTf)2-promoted ring opening of oxetane with electron-rich arenes as soft nucleophiles was involved and was the key step for the transformation. This work provided an alternative strategy for the synthesis of C-alkenyl-o-carboranes, which has an important reference for the synthesis of o-carborane derivatives with diversity.
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Affiliation(s)
- Cai-Yan Zhang
- State Key Laboratory of Environment-Friendly Energy Materials and School of Material Science and Engineering, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan 621010, P. R. China
| | - Ke Cao
- State Key Laboratory of Environment-Friendly Energy Materials and School of Material Science and Engineering, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan 621010, P. R. China
| | - Han-Bo Yang
- State Key Laboratory of Environment-Friendly Energy Materials and School of Material Science and Engineering, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan 621010, P. R. China
| | - Li-Fang Ding
- State Key Laboratory of Environment-Friendly Energy Materials and School of Material Science and Engineering, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan 621010, P. R. China
| | - Junxiao Yang
- State Key Laboratory of Environment-Friendly Energy Materials and School of Material Science and Engineering, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan 621010, P. R. China
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4
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Chalyk B, Grynyova A, Filimonova K, Rudenko TV, Dibchak D, Mykhailiuk PK. Unexpected Isomerization of Oxetane-Carboxylic Acids. Org Lett 2022; 24:4722-4728. [PMID: 35766229 PMCID: PMC9490830 DOI: 10.1021/acs.orglett.2c01402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Many
oxetane-carboxylic
acids were found to be unstable. They easily
isomerized into new (hetero)cyclic lactones while being stored at
room temperature or slightly heated. Chemists should keep in mind
the high instability of these molecules, as this could dramatically
affect the reaction yields and lead to negative results (especially
in those reactions that require heating).
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Affiliation(s)
- Bohdan Chalyk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Strasse 5, 02094 Kyiv, Ukraine
| | | | | | - Tymofii V Rudenko
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Strasse 5, 02094 Kyiv, Ukraine
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5
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Huang W, Liu F, Wang K, Sidorenko A, Bei M, Zhang Z, Fang W, Li M, Gu Y, Ke S. Sc(OTf)3-catalyzed synthesis of polysubstituted furans from acylacetonitriles and renewable acetol. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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6
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DeRatt LG, Wang CY, Kuduk SD. Tandem Amination/Oxetane Ring Opening toward Benzomorpholines. J Org Chem 2021; 86:17482-17486. [PMID: 34807596 DOI: 10.1021/acs.joc.1c02166] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, a tandem approach that allows rapid access to the benzomorpholine scaffold is reported. This operationally simple method allows for valuable heterocycles to be isolated in moderate to high yields. The overall transformation consists of an initial C-N coupling, demonstrated using traditional Ullmann or Buchwald-Hartwig conditions, followed by an in situ oxetane ring opening. A range of functionality is tolerated on the aryl ring, and the cyclization exposes a pendant hydroxymethyl substituent, providing opportunities for further functionalization.
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Affiliation(s)
- Lindsey G DeRatt
- Janssen Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Chao-Yuan Wang
- Janssen Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Scott D Kuduk
- Janssen Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
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7
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Sandvoß A, Wiest JM. Recent Advances in Enantioselective Desymmetrizations of Prochiral Oxetanes. Chemistry 2021; 27:5871-5879. [PMID: 33274788 PMCID: PMC8049043 DOI: 10.1002/chem.202004923] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Indexed: 12/23/2022]
Abstract
Strain relief of oxetanes offers a plethora of opportunities for the synthesis of chiral alcohols and ethers. In this context, enantioselective desymmetrization has been identified as a powerful tool to construct molecular complexity and this has led to the development of elegant strategies on the basis of transition metal, Lewis acid, and Brønsted acid catalysis. This review highlights recent examples that harness the inherent reactivity of prochiral oxetanes and offers an outlook on the immense possibilities for synthetic application.
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Affiliation(s)
- Alexander Sandvoß
- Department ChemieJohannes Gutenberg Universität MainzDuesbergweg 10–1455128MainzGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Johannes M. Wiest
- Department ChemieJohannes Gutenberg Universität MainzDuesbergweg 10–1455128MainzGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
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8
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Huang H, Zhang T, Sun J. Mild C–C Bond Formation via Lewis Acid Catalyzed Oxetane Ring Opening with Soft Carbon Nucleophiles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou China
| | - Tianyu Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou China
- Department of Chemistry The Hong Kong University of Science and Technology, Clear Water Bay Kowloon, Hong Kong SAR China
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9
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Huang H, Zhang T, Sun J. Mild C-C Bond Formation via Lewis Acid Catalyzed Oxetane Ring Opening with Soft Carbon Nucleophiles. Angew Chem Int Ed Engl 2021; 60:2668-2673. [PMID: 33459485 DOI: 10.1002/anie.202013062] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Indexed: 11/09/2022]
Abstract
Mild oxetane opening by soft carbon nucleophiles has been developed for efficient C-C bond formation. In the presence of LiNTf2 or TBSNTf2 as catalyst, silyl ketene acetals were found to be effective nucleophiles to generate a wide range of highly oxygenated molecules, which are key substructure in natural products like polyketides. Furthermore, intramolecular oxetane opening by a styrene-based carbon nucleophile via a Prins-type process was also achieved with Sc(OTf)3 as catalyst, leading to efficient formation of the useful 2,3-dihydrobenzo[b]oxepine skeleton.
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Affiliation(s)
- Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Tianyu Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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10
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Batista GMF, de Castro PP, Dos Santos HF, de Oliveira KT, Amarante GW. Electron-Donor–Acceptor Complex-Enabled Flow Methodology for the Hydrotrifluoromethylation of Unsaturated β-Keto Esters. Org Lett 2020; 22:8598-8602. [DOI: 10.1021/acs.orglett.0c03187] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gabriel M. F. Batista
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, 36036-900 Juiz de Fora-MG, Brazil
- Department of Chemistry, Federal University of São Carlos, Campus São Carlos, 13565-905 São Carlos-SP, Brazil
| | - Pedro P. de Castro
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, 36036-900 Juiz de Fora-MG, Brazil
| | - Hélio F. Dos Santos
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, 36036-900 Juiz de Fora-MG, Brazil
| | - Kleber T. de Oliveira
- Department of Chemistry, Federal University of São Carlos, Campus São Carlos, 13565-905 São Carlos-SP, Brazil
| | - Giovanni W. Amarante
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, 36036-900 Juiz de Fora-MG, Brazil
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11
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Lai Z, Zhang R, Feng Q, Sun J. 3-Aminooxetanes: versatile 1,3-amphoteric molecules for intermolecular annulation reactions. Chem Sci 2020; 11:9945-9949. [PMID: 34094256 PMCID: PMC8162131 DOI: 10.1039/d0sc04254d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Despite the versatility of amphoteric molecules, stable and easily accessible ones are still limitedly known. As a result, the discovery of new amphoteric reactivity remains highly desirable. Herein we introduce 3-aminooxetanes as a new family of stable and readily available 1,3-amphoteric molecules and systematically demonstrated their amphoteric reactivity toward polarized π-systems in a diverse range of intermolecular [3 + 2] annulations. These reactions not only enrich the reactivity of oxetanes, but also provide convergent access to valuable heterocycles. Despite the versatility of amphoteric molecules, stable and easily accessible ones are still limitedly known.![]()
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Affiliation(s)
- Zengwei Lai
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Hong Kong SAR Kowloon China .,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
| | - Renwei Zhang
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Hong Kong SAR Kowloon China
| | - Qiang Feng
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Hong Kong SAR Kowloon China
| | - Jianwei Sun
- Department of Chemistry, Shenzhen Research Institute, The Hong Kong University of Science and Technology Clear Water Bay Hong Kong SAR Kowloon China
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12
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Fontenelle CQ, Thierry T, Laporte R, Pfund E, Lequeux T. Selective preparation of tetrasubstituted fluoroalkenes by fluorine-directed oxetane ring-opening reactions. Beilstein J Org Chem 2020; 16:1936-1946. [PMID: 32802210 PMCID: PMC7418098 DOI: 10.3762/bjoc.16.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/23/2020] [Indexed: 12/12/2022] Open
Abstract
The selective ring-opening reaction of fluoroalkylidene-oxetanes was directed by the presence of the fluorine atom, enabling a two-step access to tetrasubstituted fluoroalkenes with excellent geometry control. Despite its small van der Waals radii electronic, rather than steric influences of the fluorine atom governed the ring-opening reaction with bromide ions, even in the presence of bulky substituents.
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Affiliation(s)
- Clément Q Fontenelle
- Normandie Université, Laboratoire de Chimie Moléculaire et Thioorganique LCMT UMR 6507, ENSICAEN, UNICAEN, CNRS, 6 Bd. du Maréchal Juin, 14050 Caen, France
| | - Thibault Thierry
- Normandie Université, Laboratoire de Chimie Moléculaire et Thioorganique LCMT UMR 6507, ENSICAEN, UNICAEN, CNRS, 6 Bd. du Maréchal Juin, 14050 Caen, France
| | - Romain Laporte
- Normandie Université, Laboratoire de Chimie Moléculaire et Thioorganique LCMT UMR 6507, ENSICAEN, UNICAEN, CNRS, 6 Bd. du Maréchal Juin, 14050 Caen, France
| | - Emmanuel Pfund
- Normandie Université, Laboratoire de Chimie Moléculaire et Thioorganique LCMT UMR 6507, ENSICAEN, UNICAEN, CNRS, 6 Bd. du Maréchal Juin, 14050 Caen, France
| | - Thierry Lequeux
- Normandie Université, Laboratoire de Chimie Moléculaire et Thioorganique LCMT UMR 6507, ENSICAEN, UNICAEN, CNRS, 6 Bd. du Maréchal Juin, 14050 Caen, France
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13
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DeRatt LG, Lawson EC, Kumar K, Hwang SS, DesJarlais RL, Kuduk SD. Tandem Suzuki Coupling/Intramolecular Oxetane Ring Opening to Form Polycyclic Ring Systems. Org Lett 2020; 22:5828-5832. [PMID: 32702238 DOI: 10.1021/acs.orglett.0c01899] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A tandem one-pot reaction featuring a cross-coupling followed by an intramolecular oxetane ring opening by mild nucleophiles is reported. The overall transformation comprises a carbon-carbon bond formation along with a carbon-heteroatom bond construction providing diverse multicyclic ring systems with a pendant hydroxymethyl handle for further elaboration. This approach constitutes a convergent method for rapid access to various scaffolds. Furthermore, a comparison of computed low-energy conformers is presented to rationalize instances in which cyclization was not observed.
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Affiliation(s)
- Lindsey G DeRatt
- Discovery Chemistry, Janssen Pharmaceutical Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Edward C Lawson
- Discovery Chemistry, Janssen Pharmaceutical Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Kiran Kumar
- Discovery Chemistry, Janssen Pharmaceutical Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Soyon S Hwang
- Discovery Chemistry, Janssen Pharmaceutical Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Renee L DesJarlais
- Discovery Chemistry, Janssen Pharmaceutical Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Scott D Kuduk
- Discovery Chemistry, Janssen Pharmaceutical Research and Development, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
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14
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Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2-Dihydroquinolines. Angew Chem Int Ed Engl 2020; 59:11245-11249. [PMID: 32219976 DOI: 10.1002/anie.201916727] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/08/2020] [Indexed: 01/29/2023]
Abstract
Skeletal reorganization is a type of fascinating transformations owing to their intriguing mechanisms and utility in complex molecule synthesis. However, only a limited amount of examples are known for most functional groups. Herein, we describe such an unusual process of oxetanes. In the presence of In(OTf)3 as catalyst, oxetane-tethered anilines reacted unexpectedly to form 1,2-dihydroquinolines. This process not only provides expedient access to dihydroquinolines, but also represents a new reaction of oxetane. Mechanistically, it is believed that the reaction proceeds through initial nitrogen attack rather than arene attack followed by a series of bond cleavage and formation events. Control experiments provided important insights into the mechanism.
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Affiliation(s)
- Guannan Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Wengang Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chenxiao Qian
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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15
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Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2‐Dihydroquinolines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guannan Wang
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Wengang Guo
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Chenxiao Qian
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
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16
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Shrestha R, Khanal HD, Yang W, Kim SH, Shim J, Lee YR. Metal‐Free
N
‐Annulation of 3‐Formylchromones with α‐Amino Ketones for the Construction of Diverse
N
‐Functionalized Pyrroles. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rajeev Shrestha
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Hari Datta Khanal
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Won‐Guen Yang
- Analysis Research DivisionDaegu CenterKorea Basic Science Institute Daegu 41566 (Republic of Korea
| | - Sung Hong Kim
- Analysis Research DivisionDaegu CenterKorea Basic Science Institute Daegu 41566 (Republic of Korea
| | - Jae‐Jin Shim
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Yong Rok Lee
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
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17
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Badmus FO, Malone JA, Fronczek FR, Kartika R. Synthesis of functionalized tetrahydropyrans via cascade cycloaddition involving silyloxyallyl cation intermediates. Chem Commun (Camb) 2020; 56:5034-5037. [DOI: 10.1039/d0cc01796e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An expedient synthesis of highly substituted tetrahydrobenzofuran via an unsymmetrical silyloxyallyl cation is reported.
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Affiliation(s)
| | | | | | - Rendy Kartika
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
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18
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Wen S, Lv W, Ba D, Liu J, Cheng G. Ruthenium(ii)-catalyzed chemoselective deacylative annulation of 1,3-diones with sulfoxonium ylides via C-C bond activation. Chem Sci 2019; 10:9104-9108. [PMID: 31827753 PMCID: PMC6889838 DOI: 10.1039/c9sc03245b] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/09/2019] [Indexed: 12/11/2022] Open
Abstract
The first successful example of deacylative annulation of 1,3-diones with sulfoxonium ylides was achieved through Ru(ii)-catalyzed C-C bond activation. The excellent chemoselectivity and broad substrate scope render this method a practical and versatile approach for the preparation of (hetero)aryl and alkenyl substituted furans, which are valuable units in many biologically active compounds and functional materials. A preliminary mechanistic study reveals that this process involves a deacylative α-ruthenation to generate key alkyl Ru(ii) intermediates with the release of a benzoic acid fragment.
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Affiliation(s)
- Si Wen
- College of Materials Science & Engineering , Huaqiao University , Xiamen 361021 , China .
| | - Weiwei Lv
- College of Materials Science & Engineering , Huaqiao University , Xiamen 361021 , China .
| | - Dan Ba
- College of Materials Science & Engineering , Huaqiao University , Xiamen 361021 , China .
| | - Jing Liu
- College of Materials Science & Engineering , Huaqiao University , Xiamen 361021 , China .
| | - Guolin Cheng
- College of Materials Science & Engineering , Huaqiao University , Xiamen 361021 , China .
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19
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Perna FM, Falcicchio A, Salomone A, Milet A, Rizzi R, Hamdoun G, Barozzino‐Consiglio G, Stalke D, Oulyadi H, Capriati V. First Direct Evidence of an
ortho
‐Lithiated Aryloxetane: Solid and Solution Structure, and Dynamics. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Filippo M. Perna
- Dipartimento di Farmacia‐Scienze del Farmaco Università di Bari “Aldo Moro” Consorzio C.I.N.M.P.I.S. Via E. Orabona 4 70125 Bari Italy
| | - Aurelia Falcicchio
- Istituto di Cristallografia (IC‐CNR) Via Amendola 122/o 70125 Bari Italy
| | - Antonio Salomone
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali Università del Salento Prov.le Lecce‐Monteroni 73100 Lecce Italy
| | - Anne Milet
- Université Grenoble Alpes CNRS, DCM 38000 Grenoble France
| | - Rosanna Rizzi
- Istituto di Cristallografia (IC‐CNR) Via Amendola 122/o 70125 Bari Italy
| | - Ghanem Hamdoun
- Normandie Université, UNIROUEN INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038) Rouen France
| | | | - Dietmar Stalke
- Institut für Anorganische Chemie Universität Göttingen Tammannstrasse 6 37077 Göttingen Germany
| | - Hassan Oulyadi
- Normandie Université, UNIROUEN INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038) Rouen France
| | - Vito Capriati
- Dipartimento di Farmacia‐Scienze del Farmaco Università di Bari “Aldo Moro” Consorzio C.I.N.M.P.I.S. Via E. Orabona 4 70125 Bari Italy
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20
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Huang H, Yang W, Chen Z, Lai Z, Sun J. A mild catalytic synthesis of 2-oxazolines via oxetane ring-opening: rapid access to a diverse family of natural products. Chem Sci 2019; 10:9586-9590. [PMID: 32055332 PMCID: PMC6993743 DOI: 10.1039/c9sc03843d] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 08/24/2019] [Indexed: 12/14/2022] Open
Abstract
A new catalytic protocol for the expedient synthesis of oxazolines from oxetanes is developed.
A new catalytic protocol for the expedient synthesis of oxazolines from oxetanes is disclosed. This mild process complements the conventional oxazoline synthesis based on non-catalytic cyclization of β-hydroxy or unsaturated amides. It is also a new addition to the reactivity profile of oxetanes leading to heterocycles. In the presence of In(OTf)3, various 3-amido oxetanes underwent smooth intramolecular cyclization to form the corresponding 2-oxazolines, including some valuable oxazoline-based bidentate ligands. This protocol also provides rapid access to various natural products and antibacterial molecules.
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Affiliation(s)
- Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology , School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China .
| | - Wen Yang
- Department of Chemistry and Shenzhen Research Institute , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong SAR , China
| | - Zuliang Chen
- Department of Chemistry and Shenzhen Research Institute , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong SAR , China
| | - Zengwei Lai
- Department of Chemistry and Shenzhen Research Institute , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong SAR , China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology , School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China . .,Department of Chemistry and Shenzhen Research Institute , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong SAR , China
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21
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Krishnan J, Mayadevi TS, Varughese S, Nair V. Facile Diastereoselective Synthesis of Highly Substituted Alkylene-oxetanes from 3-Alkyl Allenoates and Diaryl 1,2-Diones/α-Ketoamides Mediated by DBU. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801747] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jagadeesh Krishnan
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
| | - T. S. Mayadevi
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
| | - Sunil Varughese
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
| | - Vijay Nair
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
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22
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Shen J, Chen Y, Chen T, Zou Z, Feng Y, You Q. Facile synthesis of 2-(2-aminobenzoyl)benzoic acids via a base-promoted aerobic cascade reaction. Org Chem Front 2019. [DOI: 10.1039/c9qo00101h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A novel base-promoted aerobic cascade reaction for the regiospecific synthesis of 2-(2-aminobenzoyl)benzoic acids under metal-free conditions is developed.
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Affiliation(s)
- Jinhai Shen
- School of Environment and Public Health
- Xiamen Huaxia University
- Xiamen 361024
- China
- Fujian Key Laboratory of Molecular Medicine (Huaqiao University)
| | - Yangxin Chen
- School of Environment and Public Health
- Xiamen Huaxia University
- Xiamen 361024
- China
| | - Ting Chen
- School of Environment and Public Health
- Xiamen Huaxia University
- Xiamen 361024
- China
| | - Zhongai Zou
- School of Environment and Public Health
- Xiamen Huaxia University
- Xiamen 361024
- China
| | - Yadong Feng
- School of Environment and Public Health
- Xiamen Huaxia University
- Xiamen 361024
- China
| | - Qihua You
- School of Environment and Public Health
- Xiamen Huaxia University
- Xiamen 361024
- China
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23
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Deng H, Jia R, Yang WL, Yu X, Deng WP. Ligand-controlled switch in diastereoselectivities: catalytic asymmetric construction of spirocyclic pyrrolidine-azetidine/oxe(thie)tane derivatives. Chem Commun (Camb) 2019; 55:7346-7349. [DOI: 10.1039/c9cc03589c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An asymmetric [3+2] cycloaddition of azomethine ylides with four-membered ring-containing dipolarophiles was developed, and either exo or endo spirocyclic pyrrolidine-azetidine/oxe(thie)tanes were obtained.
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Affiliation(s)
- Hua Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Renmeng Jia
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Wu-Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Xingxin Yu
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
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24
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Arroniz C, Chaubet G, Anderson EA. Dual Oxidation State Tandem Catalysis in the Palladium-Catalyzed Isomerization of Alkynyl Epoxides to Furans. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02248] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Carlos Arroniz
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Guilhem Chaubet
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Edward A. Anderson
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
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25
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Chiu HC, Tonks IA. Trimethylsilyl-Protected Alkynes as Selective Cross-Coupling Partners in Titanium-Catalyzed [2+2+1] Pyrrole Synthesis. Angew Chem Int Ed Engl 2018; 57:6090-6094. [PMID: 29573100 DOI: 10.1002/anie.201800595] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Indexed: 11/05/2022]
Abstract
Trimethylsilyl (TMS)-protected alkynes served as selective alkyne cross-coupling partners in titanium-catalyzed [2+2+1] pyrrole synthesis. Reactions of TMS-protected alkynes with internal alkynes and azobenzene under the catalysis of titanium imido complexes yielded pentasubstituted 2-TMS-pyrroles with greater than 90 % selectivity over the other nine possible pyrrole products. The steric and electronic effects of the TMS group were both identified to play key roles in this highly selective pyrrole synthesis. This strategy provides a convenient method to synthesize multisubstituted pyrroles as well as an entry point for further pyrrole diversification through facile modification of the resulting 2-silyl pyrrole products, as demonstrated through a short formal synthesis of the marine natural product lamellarin R.
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Affiliation(s)
- Hsin-Chun Chiu
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA
| | - Ian A Tonks
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA
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26
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Chiu H, Tonks IA. Trimethylsilyl‐Protected Alkynes as Selective Cross‐Coupling Partners in Titanium‐Catalyzed [2+2+1] Pyrrole Synthesis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800595] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hsin‐Chun Chiu
- Department of Chemistry University of Minnesota—Twin Cities 207 Pleasant Sreet SE Minneapolis MN 55455 USA
| | - Ian A. Tonks
- Department of Chemistry University of Minnesota—Twin Cities 207 Pleasant Sreet SE Minneapolis MN 55455 USA
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27
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Ding R, Wolf C. Organocatalytic Asymmetric Synthesis of α-Oxetanyl and α-Azetidinyl Tertiary Alkyl Fluorides and Chlorides. Org Lett 2018; 20:892-895. [PMID: 29360370 PMCID: PMC5937693 DOI: 10.1021/acs.orglett.8b00039] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Asymmetric thiourea and squaramide catalysis provides access to synthetically versatile α-oxetanyl and α-azetidinyl alkyl halides exhibiting a tetrasubstituted chiral carbon center with high yields and enantioselectivities. The products are readily transformed with negligible erosion of enantiopurity and excellent diastereoselectivity to a diverse group of multifunctional compounds including fluorooxindoles with two contiguous chirality centers, fluorinated heterocyclic spiranes, and polyspiro compounds.
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Affiliation(s)
- Ransheng Ding
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA
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