1
|
Yokota T, Masu H, Arai T. Asymmetric Friedel-Crafts-Type Reaction of 2-Vinylindoles to N-Boc Imines Using a Chiral Imidazolidine-Containing NCN-Pincer Pd Catalyst. J Org Chem 2023. [PMID: 36802597 DOI: 10.1021/acs.joc.2c02911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
A chiral imidazolidine-containing NCN-pincer Pd-OTf complex (NCN-Pd cat) promoted the asymmetric nucleophilic addition of unprotected 2-vinylindoles to N-Boc imines in a Friedel-Crafts-type manner. The chiral (2-vinyl-1H-indol-3-yl)methanamine products become nice platforms for constructing multiple ring systems.
Collapse
Affiliation(s)
- Tomoya Yokota
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, Chiba 263-8522, Japan
| | - Hyuma Masu
- Center for Analytical Instrumentation, Chiba University, 1-33 Yayoi, Inage, Chiba, Chiba 263-8522, Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, Chiba 263-8522, Japan
| |
Collapse
|
2
|
Monleón A, Montesinos-Magraner M, Sanz-Marco A, Blay G, Pedro JR. Three-Component Synthesis of α-Aminoperoxides Using Primary and Secondary Dialkylzinc Reagents with O 2 and α-Amido Sulfones. Org Lett 2020; 22:5380-5384. [PMID: 32585111 DOI: 10.1021/acs.orglett.0c01692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A straightforward strategy for the synthesis of unprecedented α-aminoperoxides bearing primary and secondary alkylperoxide substituents is described. Commercially available dialkylzinc reagents are oxidized with molecular oxygen and the consequent peroxide species react with stable (hetero)aromatic and aliphatic α-amido sulfones in excellent yields (>90%). The now available α-aminoperoxides are of potential interest in medicinal chemistry, specifically for the synthesis of antimalarial compounds. Moreover, modification of the reaction conditions selectively leads to N,O-acetals in good yields.
Collapse
Affiliation(s)
- Alicia Monleón
- Department de Química Orgànica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain
| | - Marc Montesinos-Magraner
- Department de Química Orgànica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain
| | - Amparo Sanz-Marco
- Department de Química Orgànica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain
| | - Gonzalo Blay
- Department de Química Orgànica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain
| | - José R Pedro
- Department de Química Orgànica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain
| |
Collapse
|
3
|
Arai T, Araseki K, Kakino J. Catalytic Asymmetric Aza-Friedel–Crafts-Type Reaction of Indoles with Isatin-Derived N-Cbz-Ketimines Using a Chiral Bis(Imidazolidine)-Containing NCN-Pincer Palladium Catalyst. Org Lett 2019; 21:8572-8576. [DOI: 10.1021/acs.orglett.9b03148] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Kensuke Araseki
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Junki Kakino
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| |
Collapse
|
4
|
Marcantoni E, Palmieri A, Petrini M. Recent synthetic applications of α-amido sulfones as precursors of N-acylimino derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo00196d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
α-Amido sulfones can be directly used as N-acylimine or N-acyliminium ion precursors in several synthetic processes aimed at the preparation of nitrogen containing compounds. This review collects the most relevant and practical utilizations of α-amido sulfones appeared in the literature after 2005.
Collapse
Affiliation(s)
- Enrico Marcantoni
- School of Science and Technology
- Chemistry Division
- University of Camerino
- 1 I-62032 Camerino
- Italy
| | - Alessandro Palmieri
- School of Science and Technology
- Chemistry Division
- University of Camerino
- 1 I-62032 Camerino
- Italy
| | - Marino Petrini
- School of Science and Technology
- Chemistry Division
- University of Camerino
- 1 I-62032 Camerino
- Italy
| |
Collapse
|
5
|
Brønsted acid-catalyzed aza-Mannich reaction of N-Boc aminals: access to multifunctional rhodanine/hydantoin derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2892-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
6
|
Trost BM, Gnanamani E, Hung CIJ. Controlling Regioselectivity in the Enantioselective N-Alkylation of Indole Analogues Catalyzed by Dinuclear Zinc-ProPhenol. Angew Chem Int Ed Engl 2017; 56:10451-10456. [PMID: 28654735 DOI: 10.1002/anie.201705315] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Indexed: 11/07/2022]
Abstract
The enantioselective N-alkylation of indole and its derivatives with aldimines is efficiently catalyzed by a zinc-ProPhenol dinuclear complex under mild conditions to afford N-alkylated indole derivatives in good yield (up to 86 %) and excellent enantiomeric ratio (up to 99.5:0.5 e.r.). This method tolerates a wide array of indoles, as well as pyrrole and carbazole, to afford the corresponding N-alkylation products. The reaction can be run on a gram scale with reduced catalyst loading without impacting the efficiency. The chiral aminals were further elaborated into various chiral polyheterocyclic derivatives. The surprising stability of the chiral N-alkylation products will open new windows for asymmetric catalysis and medicinal chemistry.
Collapse
Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA, 94305-5080, USA
| | - Elumalai Gnanamani
- Department of Chemistry, Stanford University, Stanford, CA, 94305-5080, USA
| | - Chao-I Joey Hung
- Department of Chemistry, Stanford University, Stanford, CA, 94305-5080, USA
| |
Collapse
|
7
|
Trost BM, Gnanamani E, Hung C(J. Controlling Regioselectivity in the Enantioselective N‐Alkylation of Indole Analogues Catalyzed by Dinuclear Zinc‐ProPhenol. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705315] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | | | | |
Collapse
|
8
|
Arai T, Kakino J. Catalytic Asymmetric Synthesis of 3-Indolyl Methanamines Using Unprotected Indoles and N-Boc Imines under Basic Conditions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Takayoshi Arai
- Molecular Chirality Research Center; Synthetic Organic Chemistry; Department of Chemistry; Graduate School of Science; Chiba University; 1-33 Yayoi, Inage Chiba 263-8522 Japan
| | - Junki Kakino
- Molecular Chirality Research Center; Synthetic Organic Chemistry; Department of Chemistry; Graduate School of Science; Chiba University; 1-33 Yayoi, Inage Chiba 263-8522 Japan
| |
Collapse
|
9
|
Arai T, Kakino J. Catalytic Asymmetric Synthesis of 3-Indolyl Methanamines Using Unprotected Indoles and N-Boc Imines under Basic Conditions. Angew Chem Int Ed Engl 2016; 55:15263-15267. [DOI: 10.1002/anie.201607679] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 10/08/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Takayoshi Arai
- Molecular Chirality Research Center; Synthetic Organic Chemistry; Department of Chemistry; Graduate School of Science; Chiba University; 1-33 Yayoi, Inage Chiba 263-8522 Japan
| | - Junki Kakino
- Molecular Chirality Research Center; Synthetic Organic Chemistry; Department of Chemistry; Graduate School of Science; Chiba University; 1-33 Yayoi, Inage Chiba 263-8522 Japan
| |
Collapse
|
10
|
|
11
|
Hirotaki K, Yamada Y, Hanamoto T. Diethylzinc-Promoted Synthesis of Trifluromethyl-Containing Tryptamine Analogues from Indoles and 2-Trifluromethyl-N-(4-Toluenesulfonyl)-Aziridine. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300286] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|