1
|
Wei J, Du Z, Wang X, Ji C, Li L, You Y. Palladium-catalyzed enantioselective arylation of trichloro- or tri-/difluoroacetaldimine precursors. Chem Commun (Camb) 2024; 60:3303-3306. [PMID: 38426541 DOI: 10.1039/d4cc00022f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A palladium-catalyzed asymmetric α-arylation of N-carbamoyl imine precursors containing CCl3, CF3 and CF2H is presented. This protocol provides facile access to a series of chiral α-aryl trichloroethylamines bearing various functional groups, with moderate to high yields (40-82% yield) and high enantioselectivity (80-99% ee).
Collapse
Affiliation(s)
- Jian Wei
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Zhongjian Du
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Xu Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Chenlei Ji
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Longji Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
- Department of Nuclear Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yang'en You
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| |
Collapse
|
2
|
Zhang Y, Teng BH, Wu XF. Copper-catalyzed trichloromethylative carbonylation of ethylene. Chem Sci 2024; 15:1418-1423. [PMID: 38274060 PMCID: PMC10806816 DOI: 10.1039/d3sc05530b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/13/2023] [Indexed: 01/27/2024] Open
Abstract
Difunctionalization of alkenes is an efficient strategy for the synthesis of complex compounds from readily available starting materials. Herein, we developed a copper-catalyzed visible-light-mediated trichloromethylative carbonylation of ethylene by employing commercially available CCl4 and CO as trichloromethyl and carbonyl sources, respectively. With this protocol, various nucleophiles including amines, phenols, and alcohols can be rapidly transformed into β-trichloromethyl carboxylic acid derivatives with good functional-group tolerance. Bis-vinylated γ-trichloromethyl amides can also be obtained by adjusting the pressure of carbon monoxide and ethylene. In addition, this photocatalytic system can be successfully applied in the late-stage functionalization of bioactive molecules and pharmaceutical derivatives as well.
Collapse
Affiliation(s)
- Youcan Zhang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science Shanghai 201620 China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 116023 Dalian Liaoning China
| | - Bing-Hong Teng
- School of Chemistry and Chemical Engineering, Liaoning Normal University 850 Huanghe Road Dalian 116029 China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 116023 Dalian Liaoning China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 116023 Dalian Liaoning China
- Leibniz-Institut Für Katalyse e.V. Albert-Einstein-Straβe 29a 18059 Rostock Germany
| |
Collapse
|
3
|
Shen J, Yue X, Xu J, Li W. α-Amino Radical-Mediated Difunctionalization of Alkenes with Polyhaloalkanes and N-Heteroarenes. Org Lett 2023; 25:1994-1998. [PMID: 36920106 DOI: 10.1021/acs.orglett.3c00647] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Herein, we report a mild and practical protocol for the α-perchloroalkyl β-heteroarylation of alkenes using available chloroform as the dichloromethyl source via α-amino radical-mediated halogen-atom transfer. Various substrates are compatible under mild reaction conditions, providing the corresponding products in moderate to good yields. This strategy gives an efficient and convenient method for the introduction of chloroalkyl motifs into N-heteroarenes. The control experiment demonstrates that the α-amino radical generated in situ is a key intermediate in the transformation.
Collapse
Affiliation(s)
- Jiabin Shen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, P. R. China
| | - Xiaoguang Yue
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Jun Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Wanmei Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| |
Collapse
|
4
|
Ayme JF, Bruchmann B, Karmazin L, Kyritsakas N. Transient self-assembly of metal-organic complexes. Chem Sci 2023; 14:1244-1251. [PMID: 36756320 PMCID: PMC9891378 DOI: 10.1039/d2sc06374c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Implementing transient processes in networks of dynamic molecules holds great promise for developing new functional behaviours. Here we report that trichloroacetic acid can be used to temporarily rearrange networks of dynamic imine-based metal complexes towards new equilibrium states, forcing them to express complexes otherwise unfavourable in their initial equilibrium states. Basic design principles were determined for the creation of such networks. Where a complex distribution of products was obtained in the initial equilibrium state of the system, the transient rearrangement temporarily yielded a simplified output, forcing a more structured distribution of products. Where a single complex was obtained in the initial equilibrium state of the system, the transient rearrangement temporarily modified the properties of this complex. By doing so, the mechanical properties of an helical macrocyclic complex could be temporarily altered by rearranging it into a [2]catenane.
Collapse
Affiliation(s)
- Jean-François Ayme
- BASF SE, Joint Research Network on Advanced Materials and Systems (JONAS) Carl-Bosch Str. 38 67056 Ludwigshafen Germany
| | - Bernd Bruchmann
- BASF SE, Joint Research Network on Advanced Materials and Systems (JONAS) Carl-Bosch Str. 38 67056 Ludwigshafen Germany
| | - Lydia Karmazin
- Service de Radiocristallographie, Fédération de chimie Le Bel FR2010, Université de Strasbourg1 rue Blaise Pascal67008 StrasbourgFrance
| | - Nathalie Kyritsakas
- Service de Radiocristallographie, Fédération de chimie Le Bel FR2010, Université de Strasbourg1 rue Blaise Pascal67008 StrasbourgFrance
| |
Collapse
|
5
|
Zhang JH, Jiang LL, Hu SJ, Li JZ, Yu XC, Liu FL, Guan YT, Lei KW, Wei WT. The polychloromethylation/acyloxylation of 1,6-enynes with chloroalkanes and diacyl peroxides through dual-role designs. Org Biomol Chem 2022; 20:7067-7070. [PMID: 35993972 DOI: 10.1039/d2ob01330d] [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
The novel polychloromethylation/acyloxylation of 1,6-enynes with chloroalkanes and diacyl peroxides through dual-role designs has been developed to prepare 2-pyrrolidinone derivatives with polychloromethyl units with the use of an inexpensive copper salt under mild conditions. This strategy includes two dual-role designs, not only improving atomic utilization but also allowing a cleaner process. The wide substrate scope and simple reaction conditions demonstrate the practicability of this protocol.
Collapse
Affiliation(s)
- Jun-Hao Zhang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Li-Lin Jiang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Sen-Jie Hu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Jiao-Zhe Li
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Xuan-Chi Yu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Fa-Liang Liu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Yu-Tao Guan
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Ke-Wei Lei
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| |
Collapse
|
6
|
Wang Q, Wang M, Wu Q, Ma M, Zhao B. Synthesis of β-Polychlorinated Alkynes Enabled by Copper-Catalyzed Multicomponent Reaction. Org Lett 2022; 24:4772-4777. [PMID: 35766365 DOI: 10.1021/acs.orglett.2c01755] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Functional molecules bearing polychlorinated moieties usually play versatile roles in organic synthesis and biochemistry. A copper-catalyzed multicomponent polychloro-carboalkynylation of alkenes presents an efficient and operationally simple approach for the synthesis of β-polychlorinated alkynes. Mechanistic experiments were conducted demonstrating that an in situ generated copper acetylide complex was the real catalyst and reactive intermediate during the copper-catalytic cycle. And enantioselective exploration demonstrated potential application for the synthesis of chiral β-polychlorinated alkynes.
Collapse
Affiliation(s)
- Qiuzhu Wang
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Mengning Wang
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Qianhui Wu
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Mengtao Ma
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Binlin Zhao
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
7
|
Zhao ZW, Ran YS, Hou YJ, Chen X, Ding XL, Zhang C, Li YM. Free Radical Cascade Carbochloromethylations of Activated Alkenes. J Org Chem 2022; 87:4183-4194. [PMID: 35234480 DOI: 10.1021/acs.joc.1c03024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Free radical carbochloromethylations of ortho-cyanoarylacrylamides and N-(arylsulfonyl)acrylamides have been developed by employing simple alkyl chlorides as the chloromethyl source. The transformations are characterized by wide functional group compatibility and utilizing readily available reagents, thus providing efficient methods for constructing polychloromethyl-substituted quinoline-2,4-diones and α-aryl-β-polychloromethylated amides.
Collapse
Affiliation(s)
- Zhi-Wei Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yu-Song Ran
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yu-Jian Hou
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Xin Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Xue-Ling Ding
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Cui Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| |
Collapse
|
8
|
Kusakabe M, Nagao K, Ohmiya H. Radical Relay Trichloromethylacylation of Alkenes through N-Heterocyclic Carbene Catalysis. Org Lett 2021; 23:7242-7247. [PMID: 34464143 DOI: 10.1021/acs.orglett.1c02639] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
N-Heterocyclic carbene catalysis enabling vicinal trichloromethylacylation of alkenes using tetrachloromethane and aldehydes has been developed. The reaction involves single electron transfer from the enolate form of the Breslow intermediate to tetrachloromethane to generate the persistent Breslow intermediate-derived ketyl radical and a transient trichloromethyl radical. After radical addition of the trichloromethyl radical to an alkene, the prolonged alkyl radical is preferentially captured by the ketyl radical over tetrachloromethane leading to the atom transfer radical addition product.
Collapse
Affiliation(s)
- Mayu Kusakabe
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kazunori Nagao
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hirohisa Ohmiya
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.,JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
9
|
Affiliation(s)
- Gao Huang
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Jiangsu Province Key Laboratory of Fine Petrochemical Engineering Changzhou University Changzhou 213164 People's Republic of China
| | - Jin‐Tao Yu
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Jiangsu Province Key Laboratory of Fine Petrochemical Engineering Changzhou University Changzhou 213164 People's Republic of China
| | - Changduo Pan
- School of Chemical & Environmental Engineering Jiangsu University of Technology Changzhou 213001 People's Republic of China
| |
Collapse
|
10
|
Xu C, Zhu Z, Wang Y, Jing Z, Gao B, Zhao L, Dong WK. Oxidative α-Trichloromethylation of Tertiary Amines: An Entry to α-Amino Acid Esters. J Org Chem 2019; 84:2234-2242. [PMID: 30669841 DOI: 10.1021/acs.joc.8b03238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Changming Xu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
- Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhaobin Zhu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Yongchang Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Zhiguo Jing
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Bin Gao
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Li Zhao
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Wen-Kui Dong
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| |
Collapse
|
11
|
You Y, Luo S. Catalytic Asymmetric Mannich Type Reaction with Tri-/Difluoro- or Trichloroacetaldimine Precursors. Org Lett 2018; 20:7137-7140. [PMID: 30407021 DOI: 10.1021/acs.orglett.8b03083] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly efficient catalytic asymmetric Mannich type reaction of CF3-, CF2H-, or CCl3-acetaldimine precursors by a chiral primary amine is presented. This protocol provides facile access to chiral CF3-, CF2H-, or trichloroethyl amines in excellent yields and high enantioselectivity (up to 99% yield, up to >99% ee).
Collapse
Affiliation(s)
- Yang'en You
- Key Laboratory of Molecular Recognition and Function , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100490 , China
| | - Sanzhong Luo
- Key Laboratory of Molecular Recognition and Function , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100490 , China.,Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 100875 , China
| |
Collapse
|
12
|
A diastereoselective Mannich reaction of α-fluoroketones with ketimines: Construction of β-fluoroamine motifs with vicinal tetrasubstituted stereocenters. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
13
|
Enevoldsen MV, Overgaard J, Pedersen MS, Lindhardt AT. Organocatalyzed Decarboxylative Trichloromethylation of Morita-Baylis-Hillman Adducts in Batch and Continuous Flow. Chemistry 2018; 24:1204-1208. [PMID: 29168579 DOI: 10.1002/chem.201704972] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Indexed: 12/15/2022]
Abstract
Two protocols for the organocatalyzed decarboxylative trichloromethylation of Morita-Baylis-Hillman (MBH) substrates have been developed. Applying sodium trichloroacetate, as the trichloromethyl anion precursor, in combination with an organocatalyst and acetylated MBH-alcohols, the desired trichloromethylated products were obtained in good yields at room temperature in batch. The method was next extrapolated into a two-step continuous flow protocol, starting directly from the MBH alcohols, in combination with tributylamine acting both as base and catalyst. The flow process proved superior to the batch approach, reducing the reaction time from 16 hours to only 20 minutes, with increased yields for all investigated entries. Two examples were also taken to scale-up in flow producing more than 10 grams of both trichloromethylated targets. Finally, substitution of the organocatalyst to (DHQ)2 PHAL or (DHQD)2 PHAL induced chiral transfer to the generated stereocenter in the reaction attaining selectivities with nearly 90 % ee.
Collapse
Affiliation(s)
- Martin V Enevoldsen
- Department of Engineering, Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience centre (iNANO), Aarhus University, Hangøvej 2, 8200, Aarhus N, Denmark
| | - Jacob Overgaard
- Department of Chemistry, Centre for Materials Crystallography (CMC)., Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Maja S Pedersen
- Department of Engineering, Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience centre (iNANO), Aarhus University, Hangøvej 2, 8200, Aarhus N, Denmark
| | - Anders T Lindhardt
- Department of Engineering, Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience centre (iNANO), Aarhus University, Hangøvej 2, 8200, Aarhus N, Denmark
| |
Collapse
|
14
|
Xu JK, Li SJ, Wang HY, Xu WC, Tian SK. Three-component carboarylation of unactivated imines with arynes and carbon nucleophiles. Chem Commun (Camb) 2017; 53:1708-1711. [DOI: 10.1039/c6cc09311f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With 2-(trimethylsilyl)aryl triflates as aryne precursors, the title reaction proceeds smoothly to afford functionalized tertiary amines under transition metal-free conditions.
Collapse
Affiliation(s)
- Jing-Kun Xu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Sheng-Jun Li
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Hai-Yang Wang
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Wen-Cong Xu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Shi-Kai Tian
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| |
Collapse
|
15
|
Ávila EP, de Souza IF, Oliveira AVB, Kartnaller V, Cajaiba J, de Souza ROMA, Corrêa CC, Amarante GW. Catalyst free decarboxylative trichloromethylation of aldimines. RSC Adv 2016. [DOI: 10.1039/c6ra23936f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A catalyst free decarboxylative trichloromethylation of imines to afford different trichloromethyl sulfonyl and sulfinyl amines has been presented.
Collapse
Affiliation(s)
- Eloah P. Ávila
- Departamento de Química
- Universidade Federal de Juiz de Fora
- Juiz de Fora
- Brazil
| | | | | | - Vinicius Kartnaller
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - João Cajaiba
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Rio de Janeiro
- Brazil
| | | | - Charlane C. Corrêa
- Departamento de Química
- Universidade Federal de Juiz de Fora
- Juiz de Fora
- Brazil
| | | |
Collapse
|
16
|
Shang H, Li Y, Li X, Ren X. Diastereoselective Addition of Metal α-Fluoroenolates of Carboxylate Esters to N-tert-Butylsulfinyl Imines: Synthesis of α-Fluoro-β-amino Acids. J Org Chem 2015; 80:8739-47. [PMID: 26270259 DOI: 10.1021/acs.joc.5b01574] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report a diastereoselective addition reaction of fluoroacetate and α-alkylated fluoroacetate to N-tert-butylsulfinyl imines. This method provides a concise route to α-fluoro-β-amino acids containing fluorinated quaternary stereogenic carbon centers with very good yields and high diastereoselectivities. This protocol has the benefit of using abundant and readily accessible starting materials and is operationally simple. Additionally, the stereochemical outcome of the present reaction was different from that of the previously known addition of comparable nonfluorinated, brominated, and chlorinated enolates to N-sulfinyl imines, suggesting that an open transition state (rather than a closed one) is involved in the current fluoroalkylation reaction.
Collapse
Affiliation(s)
- Huaqi Shang
- Department of Chemistry and Chemical Engineering, Shanghai University of Engineering Science , 333 Longteng Road, Shanghai 201620, China
| | - Ya Li
- Department of Chemistry and Chemical Engineering, Shanghai University of Engineering Science , 333 Longteng Road, Shanghai 201620, China
| | - Xiang Li
- Department of Chemistry and Chemical Engineering, Shanghai University of Engineering Science , 333 Longteng Road, Shanghai 201620, China
| | - Xinfeng Ren
- Department of Chemistry and Chemical Engineering, Shanghai University of Engineering Science , 333 Longteng Road, Shanghai 201620, China
| |
Collapse
|
17
|
Wahl B, Lee DS, Woodward S. 1,4-Addition of TMSCCl3to (E)-Fumaric Esters and Thermal Rearrangement of the Adducts to 3,4-Dichloropent-2-enedioates. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500730] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
18
|
Therkelsen M, Rasmussen MT, Lindhardt AT. Decarboxylative Reissert type trifluoro- and trichloro-methylation of (iso)quinoline derivatives in batch and continuous flow. Chem Commun (Camb) 2015; 51:9651-4. [DOI: 10.1039/c5cc02807h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper-free decarboxylative trifluoro- and trichloromethylation of isoquinoline and quinoline derivatives through Reissert type reactions in batch and telescoped continuous flow.
Collapse
Affiliation(s)
- M. Therkelsen
- Department of Engineering
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- 8200 Aarhus N
- Denmark
| | - M. T. Rasmussen
- Department of Engineering
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- 8200 Aarhus N
- Denmark
| | - A. T. Lindhardt
- Department of Engineering
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- 8200 Aarhus N
- Denmark
| |
Collapse
|
19
|
Ueda M, Doi N, Miyagawa H, Sugita S, Takeda N, Shinada T, Miyata O. Reaction of cyclopropenes with a trichloromethyl radical: unprecedented ring-opening reaction of cyclopropanes with migration. Chem Commun (Camb) 2015; 51:4204-7. [DOI: 10.1039/c4cc09649e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The triethylborane-mediated direct addition of chloroform to cyclopropenes afforded trichloromethylcyclopropanes. In contrast, the use of dimethylzinc gave the unconjugated diene via ring-opening reactions.
Collapse
Affiliation(s)
| | | | | | | | | | - Tetsuro Shinada
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University
- Kobe 658-8558
- Japan
| |
Collapse
|
20
|
Nucleophilic addition of TMSCCl3 to N-phosphinoyl benzaldimines: a route to N-phosphinoyl-α-(trichloromethyl)benzylamines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.122] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
21
|
Gopi E, Namboothiri INN. Synthesis of α-tribromomethylamines via Mg-mediated addition of bromoform to imines. Org Biomol Chem 2014; 12:2769-77. [PMID: 24668340 DOI: 10.1039/c4ob00259h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mg-mediated addition of bromoform to electron deficient imines such as N-sulfonylimines affords α-tribromomethylated N-sulfonylamines in good to excellent yields. The procedure could be further simplified by transforming the imine precursors, α-sulfonyl-N-tosyl- and Boc-amines, in one pot to the corresponding α-tribromomethyl derivatives. Facile removal of the Boc protecting group in nearly quantitative yield and a silver carbonate mediated monodebromination have also been demonstrated.
Collapse
Affiliation(s)
- Elumalai Gopi
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
| | | |
Collapse
|
22
|
Li D, Li Y, Chen Z, Shang H, Li H, Ren X. Stereoselective synthesis of α-(dichloromethyl)-amines, α-(chloromethyl)amines, and α-chloro-aziridines. RSC Adv 2014. [DOI: 10.1039/c4ra00471j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
23
|
Boultwood T, Affron DP, Trowbridge AD, Bull JA. Synthesis of cis-C-iodo-N-tosyl-aziridines using diiodomethyllithium: reaction optimization, product scope and stability, and a protocol for selection of stationary phase for chromatography. J Org Chem 2013; 78:6632-47. [PMID: 23738857 PMCID: PMC3805312 DOI: 10.1021/jo400956x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Indexed: 11/29/2022]
Abstract
The preparation of C-iodo-N-Ts-aziridines with excellent cis-diastereoselectivity has been achieved in high yields by the addition of diiodomethyllithium to N-tosylimines and N-tosylimine-HSO2Tol adducts. This addition-cyclization protocol successfully provided a wide range of cis-iodoaziridines, including the first examples of alkyl-substituted iodoaziridines, with the reaction tolerating both aryl imines and alkyl imines. An ortho-chlorophenyl imine afforded a β-amino gem-diiodide under the optimized reaction conditions due to a postulated coordinated intermediate preventing cyclization. An effective protocol to assess the stability of the sensitive iodoaziridine functional group to chromatography was also developed. As a result of the judicious choice of stationary phase, the iodoaziridines could be purified by column chromatography; the use of deactivated basic alumina (activity IV) afforded high yield and purity. Rearrangements of electron-rich aryl-iodoaziridines have been promoted, selectively affording either novel α-iodo-N-Ts-imines or α-iodo-aldehydes in high yield.
Collapse
Affiliation(s)
- Tom Boultwood
- Department of Chemistry, Imperial College
London, South Kensington, London SW7 2AZ, United Kingdom
| | - Dominic P. Affron
- Department of Chemistry, Imperial College
London, South Kensington, London SW7 2AZ, United Kingdom
| | - Aaron D. Trowbridge
- Department of Chemistry, Imperial College
London, South Kensington, London SW7 2AZ, United Kingdom
| | - James A. Bull
- Department of Chemistry, Imperial College
London, South Kensington, London SW7 2AZ, United Kingdom
| |
Collapse
|
24
|
Reeves JT, Tan Z, Herbage MA, Han ZS, Marsini MA, Li Z, Li G, Xu Y, Fandrick KR, Gonnella NC, Campbell S, Ma S, Grinberg N, Lee H, Lu BZ, Senanayake CH. Carbamoyl Anion Addition to N-Sulfinyl Imines: Highly Diastereoselective Synthesis of α-Amino Amides. J Am Chem Soc 2013; 135:5565-8. [DOI: 10.1021/ja402647m] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan T. Reeves
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhulin Tan
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Melissa A. Herbage
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhengxu S. Han
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Maurice A. Marsini
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhibin Li
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Guisheng Li
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Yibo Xu
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Keith R. Fandrick
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nina C. Gonnella
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Scot Campbell
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Shengli Ma
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nelu Grinberg
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bruce Z. Lu
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Chris H. Senanayake
- Chemical
Development and Analytical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury
Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| |
Collapse
|
25
|
Li Y, Ma Y, Lu Z, Wang L, Ren X, Sun Z. Stereoselective tribromomethylation of N-(tert-butanesulfinyl)imines with bromoform: practical synthesis of α-tribromomethyl amines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|