1
|
Kitahara T, Tagami Y, Haga Y, Fustero S, Sugiishi T, Amii H. Alkylation and silylation of α-fluorobenzyl anion intermediates. Org Biomol Chem 2023; 21:9210-9215. [PMID: 37961788 DOI: 10.1039/d3ob01586f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Simple α-fluorobenzyl anions reacted with electrophiles such as non-activated alkyl halides and chlorotrimethylsilane. Upon treatment with LTMP as the base, fluoromethylbenzenes took part in the formation of α-monofluorobenzyl anions without stabilizing o-substituents. Furthermore, the resulting α-silyl fluoromethylbenzenes reacted with electrophiles such as acetophenone and benzaldehyde in the presence of cesium fluoride to form α-fluorobenzylated alcohols.
Collapse
Affiliation(s)
- Taku Kitahara
- Division of Molecular Science, Graduate School of Science and Technology, 1-5-1, Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Yuta Tagami
- Division of Molecular Science, Graduate School of Science and Technology, 1-5-1, Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Yuto Haga
- Division of Molecular Science, Graduate School of Science and Technology, 1-5-1, Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Santos Fustero
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Vicente Andrés Estelles s/n, C.P.: 46100 Burjassot, Valencia, Spain
| | - Tsuyuka Sugiishi
- Division of Molecular Science, Graduate School of Science and Technology, 1-5-1, Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Hideki Amii
- Division of Molecular Science, Graduate School of Science and Technology, 1-5-1, Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| |
Collapse
|
2
|
Liu S, Zeng X, Xu B. Practical fluorothiolation and difluorothiolation of alkenes using pyridine-HF and N-thiosuccinimides. Org Chem Front 2020. [DOI: 10.1039/c9qo01228a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Fluorothiolation and difluorothiolation of alkenes using pyridine-HF and N-thiosuccinimides.
Collapse
Affiliation(s)
- Shiwen Liu
- College of Textiles and Clothing
- Yancheng Institute of Technology
- Yancheng
- China
- Key Laboratory of Science and Technology of Eco-Textiles
| | - Xiaojun Zeng
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| |
Collapse
|
3
|
Abstract
A closer look is given to the successful approaches to the C(sp3)–F activation of benzylic, allylic, propargylic and allenylic fluorides.
Collapse
|
4
|
Cormier M, Ahmad M, Maddaluno J, De Paolis M. Forging C–C Bonds with Hindered Nucleophiles and Carbonyl Electrophiles: Reactivity and Selectivity of Allylic Tin Reagents/n-BuLi. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Morgan Cormier
- Normandie Université, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Maha Ahmad
- Normandie Université, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Jacques Maddaluno
- Normandie Université, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Michaël De Paolis
- Normandie Université, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| |
Collapse
|
5
|
Lasch R, Heinrich MR. Zinc-Mediated Allylation and Benzylation of Phenylazocarboxylic Esters. J Org Chem 2015; 80:10412-20. [DOI: 10.1021/acs.joc.5b01978] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Roman Lasch
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Markus R. Heinrich
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
| |
Collapse
|
6
|
Zhang Q, Mixdorf JC, Reynders GJ, Nguyen HM. Rhodium-catalyzed benzylic fluorination of trichloroacetimidates. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
7
|
Nagaki A, Tsuchihashi Y, Haraki S, Yoshida JI. Benzyllithiums bearing aldehyde carbonyl groups. A flash chemistry approach. Org Biomol Chem 2015; 13:7140-5. [DOI: 10.1039/c5ob00958h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Reductive lithiation of benzyl halides bearing aldehyde carbonyl groups followed by reaction with subsequently added electrophiles was successfully accomplished.
Collapse
Affiliation(s)
- Aiichiro Nagaki
- Department of Synthetic and Biological Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
| | - Yuta Tsuchihashi
- Department of Synthetic and Biological Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
| | - Suguru Haraki
- Department of Synthetic and Biological Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
| | - Jun-ichi Yoshida
- Department of Synthetic and Biological Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
| |
Collapse
|
8
|
Liang T, Neumann CN, Ritter T. Introduction of fluorine and fluorine-containing functional groups. Angew Chem Int Ed Engl 2013; 52:8214-64. [PMID: 23873766 DOI: 10.1002/anie.201206566] [Citation(s) in RCA: 1965] [Impact Index Per Article: 178.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Indexed: 01/20/2023]
Abstract
Over the past decade, the most significant, conceptual advances in the field of fluorination were enabled most prominently by organo- and transition-metal catalysis. The most challenging transformation remains the formation of the parent C-F bond, primarily as a consequence of the high hydration energy of fluoride, strong metal-fluorine bonds, and highly polarized bonds to fluorine. Most fluorination reactions still lack generality, predictability, and cost-efficiency. Despite all current limitations, modern fluorination methods have made fluorinated molecules more readily available than ever before and have begun to have an impact on research areas that do not require large amounts of material, such as drug discovery and positron emission tomography. This Review gives a brief summary of conventional fluorination reactions, including those reactions that introduce fluorinated functional groups, and focuses on modern developments in the field.
Collapse
Affiliation(s)
- Theresa Liang
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA
| | | | | |
Collapse
|
9
|
|
10
|
Haufe G, Suzuki S, Yasui H, Terada C, Kitayama T, Shiro M, Shibata N. CF Bond Activation of Unactivated Aliphatic Fluorides: Synthesis of Fluoromethyl-3,5-diaryl-2-oxazolidinones by Desymmetrization of 2-Aryl-1,3-difluoropropan-2-ols. Angew Chem Int Ed Engl 2012; 51:12275-9. [DOI: 10.1002/anie.201207304] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Indexed: 01/01/2023]
|
11
|
Haufe G, Suzuki S, Yasui H, Terada C, Kitayama T, Shiro M, Shibata N. CF Bond Activation of Unactivated Aliphatic Fluorides: Synthesis of Fluoromethyl-3,5-diaryl-2-oxazolidinones by Desymmetrization of 2-Aryl-1,3-difluoropropan-2-ols. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207304] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
12
|
Pacheco MC, Purser S, Gouverneur V. The chemistry of propargylic and allylic fluorides. Chem Rev 2008; 108:1943-81. [PMID: 18543877 DOI: 10.1021/cr068410e] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M Carmen Pacheco
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, UK
| | | | | |
Collapse
|
13
|
Terao J, Begum SA, Shinohara Y, Tomita M, Naitoh Y, Kambe N. Conversion of a (sp3)C–F bond of alkyl fluorides to (sp3)C–X (X = Cl, C, H, O, S, Se, Te, N) bonds using organoaluminium reagents. Chem Commun (Camb) 2007:855-7. [PMID: 17308654 DOI: 10.1039/b613641a] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple method for the conversion of (sp(3))C-F bonds of alkyl fluorides to (sp(3))C-X (X = Cl, C, H, O, S, Se, Te, N) bonds has been achieved by the use of a hexane solution of organoaluminum reagents having Al-X bonds.
Collapse
Affiliation(s)
- Jun Terao
- Science and Technology Centre for Atoms, Molecules and Ions Control, Graduate School of Engineering, Osaka University and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka.
| | | | | | | | | | | |
Collapse
|
14
|
|
15
|
Streiff S, Ribeiro N, Désaubry L. Synthesis of allylsilanes by reductive lithiation of thioethers. J Org Chem 2004; 69:7592-8. [PMID: 15497986 DOI: 10.1021/jo049237u] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although much work in reductive lithiation has been done, the utilization of allylthioethers bearing various substituents to prepare allylsilanes has not been explored. The main reason clearly stems from the anticipated lack of regioselectivity. We describe herein the first study on the regioselectivity of the reductive silylation involving dissymmetric allylthioethers. We surveyed a broad spectrum of parameters and showed that this process displays a great dependence of the reaction conditions. We also discovered that an electron transporter, DBB or naphthalene, can cleave THF at room temperature by sonication, to generate a strong base, 4-lithiobutoxide. This feature was successfully exploited to the straightforward synthesis of bis-silanes in one pot. Examples are provided for maximizing both the chemical yield and the regioselectivity of the reductive silylation through the tuning of the reaction conditions. By changing these conditions, several allylsilanes can be selectively synthesized from one thioether.
Collapse
|
16
|
|
17
|
|
18
|
Yus M, Martínez P, Guijarro D. Direct Transformation of Allylic and Benzylic Thiols, Thioethers, and Disulfides into Organolithium Compounds. SYNTHETIC COMMUN 2003. [DOI: 10.1081/scc-120021518] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|