1
|
Lu D, Lu S, Ding CH, Li X, Xu B. Synthesis of β-Carbonyl α-Iminoamides by Double Insertion of Isocyanides into Aldehydes. Org Lett 2024; 26:6335-6340. [PMID: 39046225 DOI: 10.1021/acs.orglett.4c01871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
An unprecedented trimethylsilyl trifluoromethanesulfonate (TMSOTf)-promoted selective double insertion of isocyanides into aldehydes was developed, providing an efficient protocol for synthetically challenging β-carbonyl α-iminoamides. The given approach is applicable for a diverse selection of readily accessible aldehydes, along with isocyanides serving as essential precursors for "amide" and "imine" scaffolds. The versatile transformations of the given products were demonstrated, and the pivotal intermediates for the plausible mechanism were identified.
Collapse
Affiliation(s)
- Di Lu
- Department of Chemistry, Shanghai University, Shanghai 200444, People's Republic of China
| | - Shaohang Lu
- Department of Chemistry, Shanghai University, Shanghai 200444, People's Republic of China
| | - Chang-Hua Ding
- Department of Chemistry, Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, Shanghai University, Shanghai 200444, People's Republic of China
| | - Xinyao Li
- Department of Chemistry, Shanghai University, Shanghai 200444, People's Republic of China
| | - Bin Xu
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University, Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education), Shanghai University, Shanghai 200444, People's Republic of China
| |
Collapse
|
2
|
Tokushige K, Abe T. Formal One Carbon Deletion of Indoline Hemiaminals under Tautomeric Control to Access 2-Aminobenzyl Compounds. J Org Chem 2024; 89:10349-10354. [PMID: 38949244 DOI: 10.1021/acs.joc.4c00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Unprecedented tert-BuOK-mediated one carbon deletion of indoline hemiaminals has been achieved. This novel protocol provides an efficient synthetic tool for the construction of 2-aminobenzyl compounds with high chemoselectivity. In addition, functionalized 2-aminobenzyl compounds are difficult to make, for which few limited means of access currently exist. The key to success is the use of in situ generated Heyns rearrangement products (α-amino carbonyl compounds) as precursors for formal one carbon deletion.
Collapse
Affiliation(s)
- Keisuke Tokushige
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
| | - Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
| |
Collapse
|
3
|
Barranco S, Cuccu F, Uras M, Frongia A. The Heyns Rearrangement: Synthetic Routes Beyond Carbohydrate Chemistry. Chemistry 2024; 30:e202400355. [PMID: 38411601 DOI: 10.1002/chem.202400355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 02/28/2024]
Abstract
This concept review describes the recent achievements on the Heyns rearrangement appeared in literature over the last decade and aims to provide the reader with a general overview of the fundamental synthetic advances in this research area.
Collapse
Affiliation(s)
- Stefano Barranco
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy
| | - Federico Cuccu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy
| | - Mauro Uras
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy
| | - Angelo Frongia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy
| |
Collapse
|
4
|
Cui SQ, Zhang DB, Wei ZL, Liao WW. Construction of Functionalized α-Imino Ketones via Pd-Catalyzed C-H Addition to Nitriles/Aerobic Oxidation Sequences. J Org Chem 2023; 88:16018-16023. [PMID: 37930958 DOI: 10.1021/acs.joc.3c01934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Pd(II)-catalyzed addition of sp2 C-H to nitrile/aerobic oxidation sequences for the preparation of functionalized α-imino ketones is described in which readily available heteroarenes and O-acyl cyanohydrins were employed. Various functionalized targeted molecules can be prepared in good yields with high atom and step economy. Moreover, a broad substrate scope and the ready manipulation and availability of the reaction partners enable this protocol to be appealing to explore the chemical space of the construction of functionalized α-imino ketones with high efficiency.
Collapse
Affiliation(s)
- Shu-Qiang Cui
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Dian-Bo Zhang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P R China
| |
Collapse
|
5
|
Altia M, Anbarasan P. An interrupted Heyns rearrangement approach for the regioselective synthesis of acylindoles. Chem Commun (Camb) 2023; 59:13747-13750. [PMID: 37916280 DOI: 10.1039/d3cc04144a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
An efficient and general method for the synthesis of 2- and 3-acylindoles has been achieved with high regioselectivity from o-acylanilines and α-hydroxycarbonyl or its equivalent. The strategy involves the intramolecular trapping of an in situ generated aminoenol intermediate and an interrupted Heyns rearrangement pathway, followed by aromatization or rearrangement/aromatization. Important features include excellent regiocontrol, good functional group tolerance, operational simplicity and application to gram-scale synthesis and the synthesis of an anti-tumor agent.
Collapse
Affiliation(s)
- Minakshi Altia
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
| |
Collapse
|
6
|
Murugan S, Paul AC, Khamrang T, Kavitha SJ, Rajakannan V, Hemamalini M. (2,4-Di-chloro-benzyl-idene)[2-(1 H-indol-3-yl)eth-yl]amine. IUCRDATA 2023; 8:x230780. [PMID: 37818473 PMCID: PMC10561229 DOI: 10.1107/s2414314623007800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/06/2023] [Indexed: 10/12/2023] Open
Abstract
In the title compound, C17H14Cl2N2, the mol-ecule exists in an E configuration with respect to the C=N bond of the Schiff base fragment. The dihedral angle between the indole ring system and the benzene ring is 80.86 (12)°. In the crystal, mol-ecules are connected by N-H⋯N hydrogen bonds, generating a C(7) chain extending along the a-axis direction. No aromatic π-π stacking occurs but weak C-H⋯π inter-actions are observed.
Collapse
Affiliation(s)
- Suganya Murugan
- Department of Chemistry, Government Arts and Science College for Women, Kodaikanal, Tamil Nadu, India
| | - Anaglit Catherine Paul
- Department of Chemistry, Mother Teresa Women’s University, Kodaikanal, Tamil Nadu, India
| | - Themmila Khamrang
- Assistant Professor, Department of Chemistry, DM College of Science, Dhanamanjuri University, Imphal, Manipur-795 001, India
| | | | - Venkatachalam Rajakannan
- Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India
| | - Madhukar Hemamalini
- Department of Chemistry, Mother Teresa Women’s University, Kodaikanal, Tamil Nadu, India
| |
Collapse
|
7
|
Pareek A, Singh G, Yaragorla S. Synthetic Applications of Ambiphilic C‐Acylimines in Organic Synthesis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Garima Singh
- University of Hyderabad School of Chemistry Chemistry INDIA
| | | |
Collapse
|
8
|
Nie XK, Chen Y, Zhang SQ, Cui X, Tang Z, Li GX. Chiral Primary Amine Catalyzed Enantioselective Tandem Reactions Based on Heyns Rearrangement: Synthesis of α-Tertiary Amino Ketones. Org Lett 2022; 24:2069-2074. [PMID: 35261250 DOI: 10.1021/acs.orglett.2c00724] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we disclose a new catalytic asymmetric tandem reaction based on the Heyns rearrangement for the synthesis of chiral α-amino ketones with readily available substrates. The rearrangement is different from the Heyns rearrangement in that the α-amino ketones were obtained without the shift of the carbonyl group. The key to success is using chiral primary amine as a catalyst by mimicking glucosamine-6-phosphate synthase in catalyzing the efficient Heyns rearrangement in organisms.
Collapse
Affiliation(s)
- Xiao-Kang Nie
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, P. R. China
| | - Yue Chen
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Shi-Qi Zhang
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Xin Cui
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Zhuo Tang
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Guang-Xun Li
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| |
Collapse
|
9
|
Huang J, Chen JF, Cui X, Zhao JZ, Tang Z, Li GX. Preparation of Dihydronaphthofurans from α-Hydroxyl Ketones via a One-Pot Multicomponent Reaction Based on Heyns Rearrangement. J Org Chem 2022; 87:3311-3318. [PMID: 35166530 DOI: 10.1021/acs.joc.1c02958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polysubstituted 1,2-dihydronaphthofurans were efficiently obtained in high yields and good diastereoselectivities with readily available substrates. The reaction proceeds smoothly via a series of tandem reactions, including Heyns rearrangement, oxidation, Friedel-Crafts reaction, and cyclization. The high stereoselectivity of the reaction is ascribed to the activation of the imine via an intramolecular hydrogen bond. Air is directly used as the oxidation medium, which makes the reaction safe and easy to perform. Moreover, the reaction features multiple components, which ensures the diversity of products.
Collapse
Affiliation(s)
- Jin Huang
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Jin-Fang Chen
- College of Art and Sciences, Shanxi Agricultural University, Taigu, Shanxi 030800, China
| | - Xin Cui
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Jin-Zhong Zhao
- College of Art and Sciences, Shanxi Agricultural University, Taigu, Shanxi 030800, China
| | - Zhuo Tang
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Guang-Xun Li
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| |
Collapse
|