1
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Han J, Gao W, Harrity JPA. Pd-Catalyzed [4 + 1] Annulation Strategy to Functionalized 4-Methyleneproline Derivatives. J Org Chem 2024; 89:1552-1555. [PMID: 38262918 PMCID: PMC10845110 DOI: 10.1021/acs.joc.3c02178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/25/2024]
Abstract
A Pd-catalyzed formal [4 + 1] cycloaddition reaction of sulfur ylides and in situ-generated Pd-stabilized zwitterions offers a convenient route to a series of functionalized proline derivatives. The utility of this method is demonstrated by a gram-scale synthesis and chemoselective functionalization of a proline-based derivative.
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Affiliation(s)
- Jiaxin Han
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
| | - Wenzheng Gao
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
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2
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Cheng L, Hertelendy AJ, Hart A, Law LSC, Hata R, Nouaime G, Issa F, Echeverri L, Voskanyan A, Ciottone GR. Factors associated with international humanitarian aid appeal for disasters from 1995 to 2015: A retrospective database study. PLoS One 2023; 18:e0286472. [PMID: 37262035 DOI: 10.1371/journal.pone.0286472] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023] Open
Abstract
INTRODUCTION International humanitarian aid during disasters should be needs-based and coordinated in response to appeals from affected governments. We identify disaster and population factors associated with international aid appeal during disasters and hence guide preparation by international humanitarian aid providers. METHODS In this retrospective database analysis, we searched the Emergency Events Database for all disasters from 1995 to 2015. Disasters with and without international aid appeals were compared by location, duration, type of disaster, deaths, number of people affected, and total estimated damage. Logistic regression was used to examine the association of each factor with international aid appeal. RESULTS Of 13,961 disasters recorded from 1995 to 2015, 168 (1.2%) involved international aid appeals. Aid appeals were more likely to be triggered by disasters which killed more people (OR 1.29 [95% confidence interval (CI) 1.02-1.64] log10 persons), affected more people (OR 1.85 [95%CI 1.57-2.18] / log10 persons), and occurred in Africa (OR 1.67 [95%CI 1.06-2.62). Earthquakes (OR 4.07 [95%CI 2.16-7.67]), volcanic activity (OR 6.23 [95%CI 2.50-15.53]), and insect infestations (OR 12.14 [95%CI 3.05-48.35]) were more likely to trigger international aid appeals. International aid appeals were less likely to be triggered by disasters which occurred in Asia (OR 0.46 [95%CI 0.29-0.73]) and which were transport accidents (OR 0.12 [95%CI 0.02-0.89]). CONCLUSION International aid appeal during disasters was associated with greater magnitude of damage, disasters in Africa, and specific types of disasters such as earthquakes, volcanic activity, and insect infestations. Humanitarian aid providers can focus preparation on these identified factors.
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Affiliation(s)
- Lenard Cheng
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Attila J Hertelendy
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Information Systems and Business Analytics, College of Business, Florida International University, Miami, Florida, United States of America
| | - Alexander Hart
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Emergency Medicine, Hartford Hospital, Hartford, Connecticut, United States of America
- University of Connecticut School of Medicine, Farmington, Connecticut, United States of America
| | | | - Ryan Hata
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Georgina Nouaime
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Fadi Issa
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Lina Echeverri
- Center for Research and Training in Disaster Medicine, Humanitarian Aid and Global Health, Universitá del Piemonte Orientale, II Piano, Novara, Italy
| | - Amalia Voskanyan
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Gregory R Ciottone
- Beth Israel Deaconess Medical Center Fellowship in Disaster Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
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3
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Trifonova EA, Ankudinov NM, Chusov DA, Nelyubina YV, Perekalin DS. Asymmetric cyclopropanation of electron-rich alkenes by the racemic diene rhodium catalyst: the chiral poisoning approach. Chem Commun (Camb) 2022; 58:6709-6712. [PMID: 35593764 DOI: 10.1039/d2cc01648f] [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
Asymmetric cyclopropanation of alkenes by aryldiazoacetates was achieved using the readily-available racemic (diene)rhodium complex in combination with the chiral oxazoline-phenol ligand, which acts as the chiral poison and selectively inhibits one of the enantiomers of the catalyst. This approach eliminates a common problematic step of the synthesis of chiral catalysts.
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Affiliation(s)
- Evgeniya A Trifonova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, Russia.
| | - Nikita M Ankudinov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, Russia.
| | - Denis A Chusov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, Russia.
| | - Yulia V Nelyubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, Russia.
| | - Dmitry S Perekalin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova str., 119991, Moscow, Russia.
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4
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Quintavalla A, Veronesi R, Zambardino D, Carboni D, Lombardo M. Diastereoselective Synthesis of Chiral Oxathiazine 2‐Oxide Scaffolds as Sulfinyl Transfer Agents. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Demetra Zambardino
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Davide Carboni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
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5
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Carret S, Poisson JF, Berthiol F, Achuenu C. 1,2-Additions on Chiral N-Sulfinylketimines: An Easy Access to Chiral α-Tertiary Amines. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0041-1737563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractChiral α-tertiary amines, a motif present in α,α-disubstituted α-amino acids, in a wide range of natural products, and many drugs and drug candidates, are important targets in organic chemistry. Among the possible strategies, 1,2-addition to chiral N-sulfinylketimines is one of the best routes to form chiral α-tertiary amines with a high level of stereoselectivity. In this review, we focus first on the addition of organometallic reagents or other nucleophiles as enols or ylides to chiral N-sulfinylketimines. Then secondly we cover a selection of applications of these additions in the synthesis of valuable biologically active compounds.1 Introduction2 1,2-Addition Reaction Methodologies2.1 Organolithium Reagent Additions2.2 Grignard Additions2.3 Organozinc Reagent Additions2.4 Organoindium Reagent Additions2.5 Organoboron Reagent Additions2.6 Strecker Reactions2.7 Palladium-Catalyzed Reactions2.8 Enols, Enolates, and Other Deprotonated Reagent Additions2.9 Ylide Additions2.10 Heteroatom Nucleophiles2.11 Miscellaneous Reactions3 Applications to the Synthesis of Biologically Active Molecules4 Conclusions
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6
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Foubelo F, Nájera C, Sansano JM, Yus M. Transition metal-catalyzed reactions of N-sulfinyl imines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Guan Y, Wang C. Concise Total Synthesis of (+)-Aphanorphine. Synlett 2021. [DOI: 10.1055/s-0037-1610769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractA concise total synthesis of (+)-aphanorphine is described. The key features of the strategy include a Pd-catalyzed intermolecular trimethylenemethane [3+2]-cycloaddition to form ring C and a Co-catalyzed radical cyclization through a hydrogen-atom transfer to close ring B. The synthesis was completed in six steps.
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8
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Kennedy SH, Dherange BD, Berger KJ, Levin MD. Skeletal editing through direct nitrogen deletion of secondary amines. Nature 2021; 593:223-227. [PMID: 33981048 DOI: 10.1038/s41586-021-03448-9] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 03/11/2021] [Indexed: 11/09/2022]
Abstract
Synthetic chemistry aims to build up molecular complexity from simple feedstocks1. However, the ability to exert precise changes that manipulate the connectivity of the molecular skeleton itself remains limited, despite possessing substantial potential to expand the accessible chemical space2,3. Here we report a reaction that 'deletes' nitrogen from organic molecules. We show that N-pivaloyloxy-N-alkoxyamides, a subclass of anomeric amides, promote the intermolecular activation of secondary aliphatic amines to yield intramolecular carbon-carbon coupling products. Mechanistic experiments indicate that the reactions proceed via isodiazene intermediates that extrude the nitrogen atom as dinitrogen, producing short-lived diradicals that rapidly couple to form the new carbon-carbon bond. The reaction shows broad functional-group tolerance, which enables the translation of routine amine synthesis protocols into a strategy for carbon-carbon bond constructions and ring syntheses. This is highlighted by the use of this reaction in the syntheses and skeletal editing of bioactive compounds.
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Affiliation(s)
- Sean H Kennedy
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Balu D Dherange
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | | | - Mark D Levin
- Department of Chemistry, University of Chicago, Chicago, IL, USA.
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9
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Mendes JA, Costa PRR, Yus M, Foubelo F, Buarque CD. N- tert-Butanesulfinyl imines in the asymmetric synthesis of nitrogen-containing heterocycles. Beilstein J Org Chem 2021; 17:1096-1140. [PMID: 34093879 PMCID: PMC8144919 DOI: 10.3762/bjoc.17.86] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/22/2021] [Indexed: 02/05/2023] Open
Abstract
The synthesis of nitrogen-containing heterocycles, including natural alkaloids and other compounds presenting different types of biological activities have proved to be successful employing chiral sulfinyl imines derived from tert-butanesulfinamide. These imines are versatile chiral auxiliaries and have been extensively used as eletrophiles in a wide range of reactions. The electron-withdrawing sulfinyl group facilitates the nucleophilic addition of organometallic compounds to the iminic carbon with high diastereoisomeric excess and the free amines obtained after an easy removal of the tert-butanesulfinyl group can be transformed into enantioenriched nitrogen-containing heterocycles. The goal of this review is to the highlight enantioselective syntheses of heterocycles involving the use of chiral N-tert-butanesulfinyl imines as reaction intermediates, including the synthesis of several natural products. The synthesis of nitrogen-containing heterocycles in which the nitrogen atom is not provided by the chiral imine will not be considered in this review. The sections are organized according to the size of the heterocycles. The present work will comprehensively cover the most pertinent contributions to this research area from 2012 to 2020. We regret in advance that some contributions are excluded in order to maintain a concise format.
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Affiliation(s)
- Joseane A Mendes
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro Puc-Rio, CEP 22435-900, Brazil
| | - Paulo R R Costa
- Laboratory of Bioorganic Chemistry, Institute of Research of Natural Products, Health Science Center, Federal University of Rio de Janeiro UFRJ, CEP 21941-590, Brazil
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo.99, 03080 Alicante, Spain
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99,03080 Alicante, Spain
- Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Francisco Foubelo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo.99, 03080 Alicante, Spain
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99,03080 Alicante, Spain
- Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Camilla D Buarque
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro Puc-Rio, CEP 22435-900, Brazil
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10
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Philip RM, Radhika S, Saranya PV, Anilkumar G. Applications of tert-butanesulfinamide in the synthesis of N-heterocycles via sulfinimines. RSC Adv 2020; 10:42441-42456. [PMID: 35516764 PMCID: PMC9058287 DOI: 10.1039/d0ra08819f] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 11/16/2020] [Indexed: 01/26/2023] Open
Abstract
Chiral sulfinamides are among the best known chiral auxiliaries in the stereoselective synthesis of amines and their derivatives. The most extensively used enantiopure tert-butanesulfinamide emerged as the gold standard among many others over the last two decades. The present review attempts to provide an overview of tert-butanesulfinamide mediated asymmetric N-heterocycle synthesis via sulfinimines and covers literature from 2010-2020. This methodology offers general access to structurally diverse piperidines, pyrrolidines, azetidines, and their fused derivatives that represent the structural motif of many natural products and therapeutically applicable compounds.
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Affiliation(s)
- Rose Mary Philip
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India +91-481-2731036
| | - Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India +91-481-2731036
| | - P V Saranya
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India +91-481-2731036
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India +91-481-2731036
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
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11
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Liu Y, Oble J, Pradal A, Poli G. Catalytic Domino Annulations through η
3
‐Allylpalladium Chemistry: A Never‐Ending Story. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901093] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yang Liu
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4, place Jussieu 75005 Paris France
| | - Julie Oble
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4, place Jussieu 75005 Paris France
| | - Alexandre Pradal
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4, place Jussieu 75005 Paris France
| | - Giovanni Poli
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4, place Jussieu 75005 Paris France
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12
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Mao B, Xu Y, Chen Y, Dong J, Zhang J, Gu K, Zheng B, Guo H. Palladium-Catalyzed Asymmetric Tandem [3+2] Cycloaddition/Allylation Reaction of Methylene-Trimethylenemethane: Access to Chiral Tricyclic Dinitrogen-Fused Heterocycles. Org Lett 2019; 21:4424-4427. [DOI: 10.1021/acs.orglett.9b01064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Biming Mao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yi Xu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yuehua Chen
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Jipan Dong
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Junya Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Kejia Gu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Bing Zheng
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
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13
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Qin S, Liu T, Luo Y, Jiang S, Yang G. Diastereoselective Rh-catalyzed decarboxylative allylation to form quaternary stereocenters using sulfinimine as the directing group. Org Chem Front 2019; 6:732-735. [DOI: 10.1039/c8qo01258j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/14/2024]
Abstract
In this paper, we reported for the first time that the diastereoselective Rh-catalyzed decarboxylative allylation of chiral sulfinimines could be used to form quaternary stereocenters.
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Affiliation(s)
- Shuanglin Qin
- The State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Nankai University
- Tianjin 300071
- People's Republic of China
| | - Tongtong Liu
- The State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Nankai University
- Tianjin 300071
- People's Republic of China
| | - Yunhao Luo
- The State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Nankai University
- Tianjin 300071
- People's Republic of China
| | - Shende Jiang
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Guang Yang
- The State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Nankai University
- Tianjin 300071
- People's Republic of China
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14
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Formal group insertion into aryl C‒N bonds through an aromaticity destruction-reconstruction process. Nat Commun 2018; 9:3423. [PMID: 30143605 PMCID: PMC6109128 DOI: 10.1038/s41467-018-05637-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 07/16/2018] [Indexed: 12/01/2022] Open
Abstract
Given the abundance and the ready availability of anilines, the selective insertion of atoms into the aryl carbon–nitrogen bonds will be an appealing route for the synthesis of nitrogen-containing aromatic molecules. However, because aryl carbon–nitrogen bonds are particularly inert, anilines are normally activated by conversion to more reactive intermediates such as aryldiazonium salts to achieve functionalization of the aryl carbon–nitrogen bonds, but the nitrogen atom is usually not incorporated into products, instead being discarded. The selective insertion of groups into aryl carbon–nitrogen bonds remains an elusive challenge and an unmet need in reaction design. Here we show an aromaticity destruction-reconstruction process that selectively inserts a trimethylenemethane (TMM) group into the aromatic carbon–nitrogen bond of anilines concomitant with a benzylic carbon–hydrogen bond functionalization. This process provides a transformative mode for anilines, and the insertion products are versatile precursor to various nitrogen-containing aromatic molecules through simple conversions. Activation of C–N bonds of anilines requires transformation of the amino group into a more reactive functionality. Here, the authors report an aromaticity destruction-reconstruction process that converts abundant anilines into valuable amines through group insertion into the C–N bond and benzylic C–H functionalization.
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15
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Riaz MT, Pohorilets I, Hernandez JJ, Rios J, Totah NI. Preparation of 2-(trimethylsilyl)methyl-2-propen-1-ol derivatives by cobalt catalyzed sp2-sp3 coupling. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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16
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Wang C, Li Y, Wu Y, Wang Q, Shi W, Yuan C, Zhou L, Xiao Y, Guo H. Enantioselective Construction of Tetrahydroquinazoline Motifs via Palladium-Catalyzed [4 + 2] Cycloaddition of Vinyl Benzoxazinones with Sulfamate-Derived Cyclic Imines. Org Lett 2018; 20:2880-2883. [DOI: 10.1021/acs.orglett.8b00905] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Chang Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yan Li
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Qijun Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Wangyu Shi
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Chunhao Yuan
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Leijie Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
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17
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Shi Q, Meehan MC, Galella M, Park H, Khandelwal P, Hynes J, Dhar TGM, Marcoux D. Protected Chloroethyl and Chloropropyl Amines as Conformationally Unrestricted Annulating Reagents. Org Lett 2017; 20:337-340. [DOI: 10.1021/acs.orglett.7b03548] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qing Shi
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Mariah C. Meehan
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Michael Galella
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Hyunsoo Park
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Purnima Khandelwal
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - John Hynes
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - T. G. Murali Dhar
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - David Marcoux
- Research and Development, Bristol-Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
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18
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Allen BDW, Lakeland CP, Harrity JPA. Utilizing Palladium-Stabilized Zwitterions for the Construction of N-Heterocycles. Chemistry 2017; 23:13830-13857. [DOI: 10.1002/chem.201702486] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Benjamin D. W. Allen
- Department of Chemistry; University of Sheffield, Brook Hill; Sheffield S3 7HF UK
| | | | - Joseph P. A. Harrity
- Department of Chemistry; University of Sheffield, Brook Hill; Sheffield S3 7HF UK
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19
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Dean WM, Šiaučiulis M, Storr TE, Lewis W, Stockman RA. Versatile C(sp2)−C(sp3) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- William M. Dean
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Mindaugas Šiaučiulis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Thomas E. Storr
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - William Lewis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Robert A. Stockman
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
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20
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Dean WM, Šiaučiulis M, Storr TE, Lewis W, Stockman RA. Versatile C(sp(2) )-C(sp(3) ) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes. Angew Chem Int Ed Engl 2016; 55:10013-6. [PMID: 27435802 DOI: 10.1002/anie.201602264] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/29/2016] [Indexed: 01/01/2023]
Abstract
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98 % yield and greater than 99.5 % enantiomeric excess. This ligand coupling reaction is tolerant to multiple substitution patterns and provides access to diverse areas of chemical space in three operationally simple steps from commercially available reagents. This strategy provides orthogonal access to electron-deficient heteroaromatic compounds, which are traditionally synthesized by transition metal catalyzed cross-couplings, and circumvents common issues associated with proto-demetalation and β-hydride elimination.
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Affiliation(s)
- William M Dean
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Mindaugas Šiaučiulis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Thomas E Storr
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Robert A Stockman
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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21
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Basch CH, Cobb KM, Watson MP. Nickel-Catalyzed Borylation of Benzylic Ammonium Salts: Stereospecific Synthesis of Enantioenriched Benzylic Boronates. Org Lett 2016; 18:136-9. [PMID: 26679212 PMCID: PMC4809423 DOI: 10.1021/acs.orglett.5b03455] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have developed a stereospecific, nickel-catalyzed cross-coupling of secondary benzylic ammonium salts and diboronate esters to deliver highly enantioenriched benzylic boronates. This reaction utilizes amine-derived electrophiles, which are readily available in high enantiopurity, and simple, inexpensive nickel catalysts. This reaction has broad scope, enabling synthesis of a variety of secondary benzylic boronates in good yields and excellent ee's.
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Affiliation(s)
- Corey H. Basch
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Kelsey M. Cobb
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Mary P. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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22
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Highly diastereoselective addition of chiral H-phosphonate to tert-butylsulfinyl aldimines: a convenient approach to (R)-α-aminophosphonic acids. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Anton-Torrecillas C, Bosque I, Gonzalez-Gomez JC, Loza MI, Brea J. Syntheses and Cytotoxicity of (R)- and (S)-7-Methoxycryptopleurine. J Org Chem 2015; 80:1284-90. [DOI: 10.1021/jo502660r] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Cintia Anton-Torrecillas
- Departamento
de Química Orgánica, Facultad de Ciencias and Instituto
de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Irene Bosque
- Departamento
de Química Orgánica, Facultad de Ciencias and Instituto
de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Jose C. Gonzalez-Gomez
- Departamento
de Química Orgánica, Facultad de Ciencias and Instituto
de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - María Isabel Loza
- Grupo
de Investigación Biofarma, USEF Screening Platform, Centro
de Investigación en Medicina Molecular y Enfermedades Crónicas
(CIMUS), Universidad de Santiago de Compostela, Avda de Barcelona s/n, Santiago de Compostela, Spain
| | - José Brea
- Grupo
de Investigación Biofarma, USEF Screening Platform, Centro
de Investigación en Medicina Molecular y Enfermedades Crónicas
(CIMUS), Universidad de Santiago de Compostela, Avda de Barcelona s/n, Santiago de Compostela, Spain
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24
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Li P, Jiang M, Liu JT. Asymmetric Pudovik Reaction of Chiral Fluoroalkylα,β-Unsaturated Ketimines and Diphenyl Phosphite. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400419] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Carreira EM, Fessard TC. Four-Membered Ring-Containing Spirocycles: Synthetic Strategies and Opportunities. Chem Rev 2014; 114:8257-322. [DOI: 10.1021/cr500127b] [Citation(s) in RCA: 364] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Erick M. Carreira
- Laboratorium für Organische Chemie, and ‡SpiroChem AG, ETH-Zürich, Vladimir-Prelog-Weg
3, 8093 Zürich, Switzerland
| | - Thomas C. Fessard
- Laboratorium für Organische Chemie, and ‡SpiroChem AG, ETH-Zürich, Vladimir-Prelog-Weg
3, 8093 Zürich, Switzerland
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26
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A General, Simple Catalyst for Enantiospecific Cross Couplings of Benzylic Ammonium Triflates and Boronic Acids: No Phosphine Ligand Required. Tetrahedron 2014; 70:4257-4263. [PMID: 25364060 DOI: 10.1016/j.tet.2014.03.039] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Highly improved conditions for the enantiospecific cross coupling of benzylic ammonium triflates with boronic acids are reported. This method relies on the use of Ni(cod)2 without ancillary phosphine or N-heterocyclic carbene ligands as catalyst. These conditions enable the coupling of new classes of boronic acids and benzylic ammonium triflates. In particular, both heteroaromatic and vinyl boronic acids are well tolerated as coupling partners. In addition, these conditions enable the use of ammonium triflates with a variety of substituents at the benzylic stereocenter. Further, naphthyl-substitution is not required on the benzylic ammonium triflate; ammonium triflates with simple aromatic substituents also undergo this coupling. Good to high yields and levels of stereochemical fidelity are observed. This new catalyst system greatly expands the utility of enantiospecific cross couplings of these amine-derived substrates for the preparation of highly enantioenriched products.
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27
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Mistico L, Ay E, Huynh V, Bourderioux A, Chemla F, Ferreira F, Oble J, Perez-Luna A, Poli G, Prestat G. Reactivity of tert-butanesulfinamides in palladium-catalyzed allylic substitutions. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.11.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Yang K, Liu LJ, Liu JT. The synthesis and strecker reaction of 2-chlorotetrafluoroethanesulfinyl ketimines. J Org Chem 2014; 79:3215-20. [PMID: 24597652 DOI: 10.1021/jo500008e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of 2-chlorotetrafluoroethanesulfinyl ketimines were prepared from 2-chlorotetrafluoroethanesulfinamide and ketones in high yields, and their Strecker reactions with TMSCN have been investigated. High yields and excellent diastereoselectivities were achieved in the presence of a catalytic amount of CsF under mild conditions. The six-membered chairlike models were proposed to account for the high stereoselective Strecker reaction.
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Affiliation(s)
- Kai Yang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, P.R. China
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29
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Bosque I, Bagdatli E, Foubelo F, Gonzalez-Gomez JC. Regio- and Stereoselective Aminopentadienylation of Carbonyl Compounds. J Org Chem 2014; 79:1796-804. [DOI: 10.1021/jo402854z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Irene Bosque
- Departamento
de Quı́mica Orgánica, Facultad de Ciencias and
Instituto de Sı́ntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Emine Bagdatli
- Departamento
de Quı́mica Orgánica, Facultad de Ciencias and
Instituto de Sı́ntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Francisco Foubelo
- Departamento
de Quı́mica Orgánica, Facultad de Ciencias and
Instituto de Sı́ntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Jose C. Gonzalez-Gomez
- Departamento
de Quı́mica Orgánica, Facultad de Ciencias and
Instituto de Sı́ntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
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30
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Souto JA, Lewis W, Stockman RA. Isolation of stable non cyclic 1,2-disulfoxides. Revisiting the thermolysis of S-aryl sulfinimines. Chem Commun (Camb) 2014; 50:12630-2. [PMID: 25207937 DOI: 10.1039/c4cc05751a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermolysis of S-aryl sulfinimines is shown to generate 1,2-disulfoxides and disulfides via initial Cope elimination, dimerisation of the produced sulfenic acid to a thiosulfinate, and subsequent disproportionation of the thiosulfinate.
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Affiliation(s)
- José A. Souto
- School of Chemistry
- University of Nottingham
- Nottingham
- , UK
- Departamento de Química Orgánica
| | - Willian Lewis
- School of Chemistry
- University of Nottingham
- Nottingham
- , UK
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31
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Rochette EM, Lewis W, Dossetter AG, Stockman RA. Highly diastereoselective radical cyclisations of chiral sulfinimines. Chem Commun (Camb) 2013; 49:9395-7. [PMID: 24000006 DOI: 10.1039/c3cc45452e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Elise M Rochette
- School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK.
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