1
|
Tong Z, Smith PJ, Pickford HD, Christensen KE, Anderson EA. Gold-Catalyzed Cyclization of Yndiamides with Isoxazoles via α-Imino Gold Fischer Carbenes. Chemistry 2023; 29:e202302821. [PMID: 37767940 PMCID: PMC10947298 DOI: 10.1002/chem.202302821] [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: 08/29/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 09/29/2023]
Abstract
Gold catalysis is an important method for alkyne functionalization. Here we report the gold-catalyzed formal [3+2] aminative cyclization of yndiamides and isoxazoles in a direct synthesis of polysubstituted diaminopyrroles, which are important motifs in drug discovery. Key to this process is the formation, and subsequent cyclization, of an α-imino gold Fischer carbene, which represents a new type of gold carbene intermediate. The reaction proceeds rapidly under mild conditions, with high regioselectivity being achieved by introducing a subtle steric bias between the nitrogen substituents on the yndiamide. DFT calculations revealed that the key to this regioselectivity was the interconversion of isomeric gold keteniminiun ions via a low-barrier π-complex transition state, which establishes a Curtin-Hammett scenario for isoxazole addition. By using benzisoxazoles as substrates, the reaction outcome could be switched to a formal [5+2] cyclization, leading to 1,4-oxazepines.
Collapse
Affiliation(s)
- Zixuan Tong
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Philip J. Smith
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Helena D. Pickford
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Kirsten E. Christensen
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Edward A. Anderson
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| |
Collapse
|
2
|
Kitamura M, Ohtsuka K, Eto T, Tsuzaki M, Wada M, Shimooka H, Okauchi T. Diazo-Transfer Reaction of Nonactivated Ketones with 2-Azido-1,3-bis(2,6-diisopropylphenyl)imidazolium Hexafluorophosphate (IPrAP). J Org Chem 2023; 88:15494-15500. [PMID: 37874046 DOI: 10.1021/acs.joc.3c01743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The diazo-transfer reaction of nonactivated ketone under mild reaction conditions was developed. Various nonactivated ketones such as aryl methyl ketones, sec-alkyl methyl ketones, and cyclic ketones were transformed into their corresponding α-diazoketones in one step by treating 2-azido-1,3-bis(2,6-diisopropylphenyl)imidazolium hexafluorophosphate (IPrAP) in the presence of iPr2NH in ethylene glycol. In the reaction of IPrAP with prim-alkyl methyl ketone and prim-alkyl aryl ketones, migratory amidation proceeded under the reaction conditions to afford the corresponding amides.
Collapse
Affiliation(s)
- Mitsuru Kitamura
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Kazuki Ohtsuka
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Takashi Eto
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Masato Tsuzaki
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Mayuko Wada
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Hirokazu Shimooka
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| |
Collapse
|
3
|
Chugunova E, Gazizov AS, Islamov D, Matveeva V, Burilov A, Akylbekov N, Dobrynin A, Zhapparbergenov R, Appazov N, Chabuka BK, Christopher K, Tonkoglazova DI, Alabugin IV. An Unusual Rearrangement of Pyrazole Nitrene and Coarctate Ring-Opening/Recyclization Cascade: Formal CH-Acetoxylation and Azide/Amine Conversion without External Oxidants and Reductants. Molecules 2023; 28:7335. [PMID: 37959754 PMCID: PMC10648078 DOI: 10.3390/molecules28217335] [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: 10/07/2023] [Revised: 10/20/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
We report an unusual transformation where the transient formation of a nitrene moiety initiates a sequence of steps leading to remote oxidative C-H functionalization (R-CH3 to R-CH2OC(O)R') and the concomitant reduction of the nitrene into an amino group. No external oxidants or reductants are needed for this formal molecular comproportionation. Detected and isolated intermediates and computational analysis suggest that the process occurs with pyrazole ring opening and recyclization.
Collapse
Affiliation(s)
- Elena Chugunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
| | - Almir S. Gazizov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
| | - Daut Islamov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
| | - Victoria Matveeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
| | - Alexander Burilov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
| | - Nurgali Akylbekov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie Str. 29A, Kyzylorda 120014, Kazakhstan; (N.A.); (R.Z.)
| | - Alexey Dobrynin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
| | - Rakhmetulla Zhapparbergenov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie Str. 29A, Kyzylorda 120014, Kazakhstan; (N.A.); (R.Z.)
| | - Nurbol Appazov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie Str. 29A, Kyzylorda 120014, Kazakhstan; (N.A.); (R.Z.)
- Zhakhaev Kazakh Scientific Research Institute of Rice Growing, Abay Av. 25B, Kyzylorda 120008, Kazakhstan
| | - Beauty K. Chabuka
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-3290, USA; (B.K.C.); (K.C.); (D.I.T.)
| | - Kimberley Christopher
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-3290, USA; (B.K.C.); (K.C.); (D.I.T.)
| | - Daria I. Tonkoglazova
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-3290, USA; (B.K.C.); (K.C.); (D.I.T.)
| | - Igor V. Alabugin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov St. 8, Kazan 420088, Russia; (A.S.G.); (D.I.); (V.M.); (A.B.); (A.D.); (I.V.A.)
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-3290, USA; (B.K.C.); (K.C.); (D.I.T.)
| |
Collapse
|
4
|
Definition of the Pnictogen Bond: A Perspective. INORGANICS 2022. [DOI: 10.3390/inorganics10100149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This article proposes a definition for the term “pnictogen bond” and lists its donors, acceptors, and characteristic features. These may be invoked to identify this specific subset of the inter- and intramolecular interactions formed by elements of Group 15 which possess an electrophilic site in a molecular entity.
Collapse
|
5
|
Kitamura M, Eto T, Konai K, Takahashi S, Shimooka H, Okauchi T. Synthesis of Diazoquinones and Azidophenols via Diazo‐transfer Reaction of Phenols. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200307] [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)
- Mitsuru Kitamura
- Kyushu Institute of Technology Department of Applied Chemistry 1-1 Sensui-cho, Tobataku 804-8550 Kitakyushu JAPAN
| | - Takashi Eto
- Kyushu Kogyo Daigaku Department of Applied Chemistry JAPAN
| | | | | | | | - Tatsuo Okauchi
- Kyushu Kogyo Daigaku Department of Applied Chemistry JAPAN
| |
Collapse
|
6
|
Kitamura M, Fujimura R, Nishimura T, Takahashi S, Shimooka H, Okauchi T. PdBr
2
‐Catalyzed Acetal Formation of Carbonyl Compounds Using Diazophenanthrenequinone: Utility of 9,10‐Phenanthrenedioxyacetal. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mitsuru Kitamura
- Department Applied Chemistry Kyushu Institute of Technology 1‐1 Sensuicho, Tobata 804‐8550 Kitakyushu Japan
| | - Ryo Fujimura
- Department Applied Chemistry Kyushu Institute of Technology 1‐1 Sensuicho, Tobata 804‐8550 Kitakyushu Japan
| | - Tomoaki Nishimura
- Department Applied Chemistry Kyushu Institute of Technology 1‐1 Sensuicho, Tobata 804‐8550 Kitakyushu Japan
| | - Shuhei Takahashi
- Department Applied Chemistry Kyushu Institute of Technology 1‐1 Sensuicho, Tobata 804‐8550 Kitakyushu Japan
| | - Hirokazu Shimooka
- Department Applied Chemistry Kyushu Institute of Technology 1‐1 Sensuicho, Tobata 804‐8550 Kitakyushu Japan
| | - Tatsuo Okauchi
- Department Applied Chemistry Kyushu Institute of Technology 1‐1 Sensuicho, Tobata 804‐8550 Kitakyushu Japan
| |
Collapse
|
7
|
Kitamura M, Nishimura T, Otsuka K, Shimooka H, Okauchi T. Rh(II)-catalyzed formal [3+3] cycloaddition of diazonaphthoquinones and propargyl alcohols: Synthesis of 2,3-dihydronaphtho-1,4-dioxin derivatives. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Kitamura M, Murakami K, Koga T, Eto T, Ishikawa A, Shimooka H, Okauchi T. Direct Azidation of Phenols. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900967] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mitsuru Kitamura
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Kento Murakami
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Tatsuya Koga
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Takashi Eto
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Akihiro Ishikawa
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Hirokazu Shimooka
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| | - Tatsuo Okauchi
- Kyushu Institute of Technology; Department Applied Chemistry; 1-1 Sensuicho 804-8550 Tobata, Kitakyushu Japan
| |
Collapse
|
9
|
Takahashi S, Shimooka H, Okauchi T, Kitamura M. Pd-catalyzed Cyclization of Terminal Alkynes using Diazonaphthoquinones: Synthesis of Naphtho[1,2- b]furans. CHEM LETT 2019. [DOI: 10.1246/cl.180803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuhei Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu, Fukuoka 804-8550, Japan
| | - Hirokazu Shimooka
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu, Fukuoka 804-8550, Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu, Fukuoka 804-8550, Japan
| | - Mitsuru Kitamura
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu, Fukuoka 804-8550, Japan
| |
Collapse
|
10
|
Ghosh B, Samanta R. Rh(iii)-Catalyzed straightforward arylation of 8-methyl/formylquinolines using diazo compounds. Chem Commun (Camb) 2019; 55:6886-6889. [DOI: 10.1039/c9cc02391g] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A straightforward Rh(iii)-catalyzed general strategy was developed for the introduction of naphthol/phenol moieties to 8-methyl and formylquinolines using diazonaphthalen-2(1H)-ones/quinone diazides.
Collapse
Affiliation(s)
- Bidhan Ghosh
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Rajarshi Samanta
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| |
Collapse
|
11
|
Kitamura M, Otsuka K, Takahashi S, Okauchi T. Synthesis of 1,2-naphthalenediol derivatives by Rh-catalyzed intermolecular O H insertion reaction of 1,2-diazonaphthoquinones with water and alcohols. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
12
|
Kitamura M. Azidoimidazolinium Salts: Safe and Efficient Diazo-transfer Reagents and Unique Azido-donors. CHEM REC 2016; 17:653-666. [PMID: 28000372 DOI: 10.1002/tcr.201600118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Indexed: 11/06/2022]
Abstract
2-Azido-1,3-dimethylimidazolinium chloride (ADMC) and its corresponding hexafluorophosphate (ADMP) were found to be efficient diazo-transfer reagents to various organic compounds. ADMC was prepared by the reaction of 2-chloro-1,3-dimethylimidazolinium chloride (DMC) and sodium azide. ADMP was isolated as a crystal having good thermal stability and low explosibility. ADMC and ADMP reacted with 1,3-dicarbonyl compounds under mild basic conditions to give 2-diazo-1,3-dicarbonyl compounds in high yields, which were easily isolated in virtue of the high water solubility of the by-products. ADMP showed high diazo-transfer ability to primary amines even in the absence of metal salt such as Cu(II). Using this diazotization approach, various alkyl/aryl azides were directly obtained from their corresponding primary amines in high yields. Furthermore, naphthols reacted with ADMC to give the corresponding diazonaphthoquinones in good to high yields. In addition, 2-azido-1,3-dimethylimidazolinium salts were employed as azide-transfer and migratory amidation reagents.
Collapse
Affiliation(s)
- Mitsuru Kitamura
- Department Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu, 804-8550, Japan
| |
Collapse
|
13
|
Synthesis, structure, and reaction of chiral 2-azidoimidazolinium salts: (7aS)-3-azido-5,6,7,7a-tetrahydro-2-[(1R)-1-phenylethyl]-1H-pyrrolo[1,2-c]imidazolium hexafluorophosphate and 2-azido-1,3-bis[(S)-1-phenylethyl]imidazolinium hexafluorophosphate. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
14
|
|
15
|
Kitamura M, Takahashi S, Okauchi T. Rh-Catalyzed Cyclization of 3-Aryloxycarbonyldiazonaphthoquinones for the Synthesis of β-Phenylnaphthalene Lactones and Formal Synthesis of Pradimicinone. J Org Chem 2015; 80:8406-16. [DOI: 10.1021/acs.joc.5b01251] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mitsuru Kitamura
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550 Japan
| | - Shuhei Takahashi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550 Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550 Japan
| |
Collapse
|