1
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Yuan Y, Gu Y, Wang YE, Zheng J, Ji J, Xiong D, Xue F, Mao J. One-Pot Rapid Access to Benzyl Silanes, Germanes, and Stannanes from Toluenes Mediated by a LiN(SiMe 3) 2/CsCl System. J Org Chem 2022; 87:13907-13918. [DOI: 10.1021/acs.joc.2c01612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yaqi Yuan
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yuanyun Gu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071000, P. R. China
| | - Jiali Zheng
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Jiaying Ji
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Dan Xiong
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Fei Xue
- Institute of Material Physics & Chemistry, College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Jianyou Mao
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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2
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Li Y, Wu W, Zhu H, Kang Q, Xu L, Shi H. Rhodium‐Catalyzed Benzylic Addition Reactions of Alkylarenes to Michael Acceptors. Angew Chem Int Ed Engl 2022; 61:e202207917. [DOI: 10.1002/anie.202207917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Wen‐Qiang Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hui Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Qi‐Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
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3
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Li Y, Wu W, Zhu H, Kang Q, Xu L, Shi H. Rhodium‐Catalyzed Benzylic Addition Reactions of Alkylarenes to Michael Acceptors. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207917] [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)
- Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Wen‐Qiang Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hui Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Qi‐Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
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4
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Cai C, Zou D. Recent Progress in Benzylic C(sp 3)—H Functionalization of Toluene and Its Derivatives. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202201027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Gu Y, Zhang Z, Wang YE, Dai Z, Yuan Y, Xiong D, Li J, Walsh PJ, Mao J. Benzylic Aroylation of Toluenes Mediated by a LiN(SiMe 3) 2/Cs + System. J Org Chem 2021; 87:406-418. [PMID: 34958592 DOI: 10.1021/acs.joc.1c02446] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chemoselective deprotonative functionalization of benzylic C-H bonds is challenging, because the arene ring contains multiple aromatic C(sp2)-H bonds, which can be competitively deprotonated and lead to selectivity issues. Recently it was found that bimetallic [MN(SiMe3)2 M = Li, Na]/Cs+ combinations exhibit excellent benzylic selectivity. Herein, is reported the first deprotonative addition of toluenes to Weinreb amides mediated by LiN(SiMe3)2/CsF for the synthesis of a diverse array of 2-arylacetophenones. Surprisingly, simple methyl benzoates also react with toluenes under similar conditions to form 2-arylacetophenones without double addition to give tertiary alcohol products. This finding greatly increases the practicality and impact of this chemistry. Some challenging substrates with respect to benzylic deprotonations, such as fluoro and methoxy substituted toluenes, are selectively transformed to 2-aryl acetophenones. The value of benzylic deprotonation of 3-fluorotoluene is demonstrated by the synthesis of a key intermediate in the preparation of Polmacoxib.
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Affiliation(s)
- Yuanyun Gu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Zhen Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Ziteng Dai
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yaqi Yuan
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Dan Xiong
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Jie Li
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Jianyou Mao
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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6
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Bao CC, Luo YL, Du HZ, Guan BT. Benzylic aroylation of toluenes with unactivated tertiary benzamides promoted by directed ortho-lithiation. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1035-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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7
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Seymen A, Opper U, Voß A, Brieger L, Otte F, Unkelbach C, O'Shea DF, Strohmann C. Aminopotassiation by Mixed Potassium/Lithium Amides: A Synthetic Path to Difficult to Access Phenethylamine Derivates. Angew Chem Int Ed Engl 2020; 59:22500-22504. [PMID: 32846026 PMCID: PMC7756473 DOI: 10.1002/anie.202009318] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Indexed: 11/24/2022]
Abstract
Insights gained from a comparison of aminometalation reactions with lithium amides, potassium amides and mixed lithium/potassium amides are presented. A combination of structural characterization, DFT calculations and electrophile reactions of aminometalated intermediates has shown the advantages of using a mixed metal strategy. While potassium amides fail to add, the lithium amides are uncontrollable and eliminated, yet the mixed K/Li amides deliver the best of both systems. Aminopotassiation proceeds to form the alkylpotassium species which has enhanced stability over its lithium counterpart allowing for its isolation and thereby its further characterization.
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Affiliation(s)
- Andreas Seymen
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Ulrike Opper
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Andreas Voß
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Lukas Brieger
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Felix Otte
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Christian Unkelbach
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Donal F O'Shea
- Department of Pharmaceutical and Medicinal Chemistry, Royal College Surgeons, 123 St. Stephen's Green, Dublin 2, Ireland
| | - Carsten Strohmann
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
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8
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Hermann A, Opper U, Voß A, Brieger L, Otte F, Unkelbach C, O'Shea DF, Strohmann C. Aminometallierung mit einem gemischten K/Li‐Amid: Eine Syntheseroute zu schwer zugänglichen Phenethylamin‐Derivaten. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andreas Hermann
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Ulrike Opper
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Andreas Voß
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Lukas Brieger
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Felix Otte
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | | | - Donal F. O'Shea
- Department of Pharmaceutical and Medicinal Chemistry Royal College Surgeons 123 St. Stephen's Green Dublin 2 Irland
| | - Carsten Strohmann
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
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9
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Gil-Negrete JM, Hevia E. Main group bimetallic partnerships for cooperative catalysis. Chem Sci 2020; 12:1982-1992. [PMID: 34163960 PMCID: PMC8179316 DOI: 10.1039/d0sc05116k] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/16/2020] [Indexed: 11/21/2022] Open
Abstract
Over the past decade s-block metal catalysis has undergone a transformation from being an esoteric curiosity to a well-established and consolidated field towards sustainable synthesis. Earth-abundant metals such as Ca, Mg, and Al have shown eye-opening catalytic performances in key catalytic processes such as hydrosilylation, hydroamination or alkene polymerization. In parallel to these studies, s-block mixed-metal reagents have also been attracting widespread interest from scientists. These bimetallic reagents effect many cornerstone organic transformations, often providing enhanced reactivities and better chemo- and regioselectivities than conventional monometallic reagents. Despite a significant number of synthetic advances to date, most efforts have focused primarily on stoichiometric transformations. Merging these two exciting areas of research, this Perspective Article provides an overview on the emerging concept of s/p-block cooperative catalysis. Showcasing recent contributions from several research groups across the world, the untapped potential that these systems can offer in catalytic transformations is discussed with special emphasis placed on how synergistic effects can operate and the special roles played by each metal in these transformations. Advancing the understanding of the ground rules of s-block cooperative catalysis, the application of these bimetalic systems in a critical selection of catalytic transformations encompassing hydroamination, cyclisation, hydroboration to C-C bond forming processes are presented as well as their uses in important polymerization reactions.
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Affiliation(s)
- Jose M Gil-Negrete
- Department für Chemie und Biochemie, Universität Bern CH3012 Bern Switzerland
| | - Eva Hevia
- Department für Chemie und Biochemie, Universität Bern CH3012 Bern Switzerland
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10
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Harenberg JH, Weidmann N, Knochel P. Preparation of Functionalized Aryl, Heteroaryl, and Benzylic Potassium Organometallics Using Potassium Diisopropylamide in Continuous Flow. Angew Chem Int Ed Engl 2020; 59:12321-12325. [PMID: 32216119 PMCID: PMC7383875 DOI: 10.1002/anie.202003392] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Indexed: 12/19/2022]
Abstract
We report the preparation of lithium-salt-free KDA (potassium diisopropylamide; 0.6 m in hexane) complexed with TMEDA (N,N,N',N'-tetramethylethylenediamine) and its use for the flow-metalation of (hetero)arenes between -78 °C and 25 °C with reaction times between 0.2 s and 24 s and a combined flow rate of 10 mL min-1 using a commercial flow setup. The resulting potassium organometallics react instantaneously with various electrophiles, such as ketones, aldehydes, alkyl and allylic halides, disulfides, Weinreb amides, and Me3 SiCl, affording functionalized (hetero)arenes in high yields. This flow procedure is successfully extended to the lateral metalation of methyl-substituted arenes and heteroaromatics, resulting in the formation of various benzylic potassium organometallics. A metalation scale-up was possible without further optimization.
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Affiliation(s)
- Johannes H. Harenberg
- Department ChemieLudwig-Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| | - Niels Weidmann
- Department ChemieLudwig-Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| | - Paul Knochel
- Department ChemieLudwig-Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
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11
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Harenberg JH, Weidmann N, Knochel P. Herstellung funktioneller Aryl‐, Heteroaryl‐ und benzylischer Organokalium‐Spezies mittels Kaliumdiisopropylamid im kontinuierlichen Durchfluss. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003392] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Johannes H. Harenberg
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstrasse 5–13, Haus F 81377 München Deutschland
| | - Niels Weidmann
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstrasse 5–13, Haus F 81377 München Deutschland
| | - Paul Knochel
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstrasse 5–13, Haus F 81377 München Deutschland
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12
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Alazet S, West MS, Patel P, Rousseaux SAL. Synthesis of Nitrile‐Bearing Quaternary Centers by an Equilibrium‐Driven Transnitrilation and Anion‐Relay Strategy. Angew Chem Int Ed Engl 2019; 58:10300-10304. [DOI: 10.1002/anie.201903215] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/07/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Sébastien Alazet
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Michael S. West
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Purvish Patel
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Sophie A. L. Rousseaux
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
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13
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Alazet S, West MS, Patel P, Rousseaux SAL. Synthesis of Nitrile‐Bearing Quaternary Centers by an Equilibrium‐Driven Transnitrilation and Anion‐Relay Strategy. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sébastien Alazet
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Michael S. West
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Purvish Patel
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Sophie A. L. Rousseaux
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
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14
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Robertson SD, Uzelac M, Mulvey RE. Alkali-Metal-Mediated Synergistic Effects in Polar Main Group Organometallic Chemistry. Chem Rev 2019; 119:8332-8405. [DOI: 10.1021/acs.chemrev.9b00047] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Stuart D. Robertson
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - Marina Uzelac
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - Robert E. Mulvey
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
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15
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Yamashita Y, Suzuki H, Sato I, Hirata T, Kobayashi S. Catalytic Direct-Type Addition Reactions of Alkylarenes with Imines and Alkenes. Angew Chem Int Ed Engl 2018; 57:6896-6900. [DOI: 10.1002/anie.201711291] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 03/13/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Hirotsugu Suzuki
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Io Sato
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Tsubasa Hirata
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Shū Kobayashi
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
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16
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Yamashita Y, Suzuki H, Sato I, Hirata T, Kobayashi S. Catalytic Direct-Type Addition Reactions of Alkylarenes with Imines and Alkenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711291] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Hirotsugu Suzuki
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Io Sato
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Tsubasa Hirata
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
| | - Shū Kobayashi
- Department of Chemistry; School of Science; The University of Tokyo; Hongo Bunkyo-ku Tokyo Japan
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17
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Akther T, Islam M, Matsumoto T, Tanaka J, Thuéry P, Redshaw C, Yamato T. Synthesis and structure of a chiral areno-bridged [2.4]metacyclophane. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Kroesen U, Unkelbach C, Schildbach D, Strohmann C. Controlling the Coordination Sphere of Alkyllithiums Results in Selective Reactions with Allylic Amines. Angew Chem Int Ed Engl 2017; 56:14164-14168. [PMID: 28940968 DOI: 10.1002/anie.201708620] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Indexed: 11/09/2022]
Abstract
Described herein is a selective way to control the reaction of allylic amines with metalorganic bases depending on the amine handle as well as the metalorganic base is used. Depending on the number of coordinating groups within the amine handle either a selective carbometalation or deprotonation reaction can be performed. By changing the alkali metal within the base from lithium to either sodium or potassium, a change of chemoselectivity takes place and the reaction of piperidinoallylamine can be controlled.
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Affiliation(s)
- Ulrike Kroesen
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Christian Unkelbach
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Daniel Schildbach
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Carsten Strohmann
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
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19
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Kroesen U, Unkelbach C, Schildbach D, Strohmann C. Controlling the Coordination Sphere of Alkyllithiums Results in Selective Reactions with Allylic Amines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ulrike Kroesen
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Christian Unkelbach
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Daniel Schildbach
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Carsten Strohmann
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
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20
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Das M, O’Shea DF. Z-Stereoselective Aza-Peterson Olefinations with Bis(trimethylsilane) Reagents and Sulfinyl Imines. Org Lett 2016; 18:336-9. [DOI: 10.1021/acs.orglett.5b03519] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Manas Das
- Department of Pharmaceutical
and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephen’s Green, Dublin 2, Ireland
| | - Donal F. O’Shea
- Department of Pharmaceutical
and Medicinal Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephen’s Green, Dublin 2, Ireland
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21
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Manvar A, O'Shea DF. Trimethylsilyloxide-Catalysed Peterson Olefinations with 2,2-Bis(trimethylsilyl)-1,3-dithiane. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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