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Sun R, Junpeng Y, Zhang Z, Luo R, Tang W, Liu X, Liu X, Ding A, Fu Z, Guo S, Cai H. Efficient synthesis of α-amino-vinylphosphine oxides from alkyl nitriles via manganese-catalyzed phosphinoenamination. Org Biomol Chem 2024; 22:4993-5000. [PMID: 38840509 DOI: 10.1039/d4ob00489b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
A protocol for the synthesis of α-amino-vinylphosphine oxides by phosphinoenamination reaction between alkyl nitriles and phosphine oxides was developed. The combination of Mn(OAc)2 as a Lewis acid and guanidine as a Lewis base was found to be an efficient catalytic system for this reaction. A series of alkyl nitriles and phosphine oxides are compatible with this conversion, furnishing the desired products in up to 95% yield under mild conditions. Furthermore, this method demonstrates the capability of gram-scale synthesis.
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Affiliation(s)
- Runbo Sun
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Yang Junpeng
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Zheng Zhang
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Ruihang Luo
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Wentao Tang
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Xinyu Liu
- The First Clinical Medical College, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China
| | - Xiaoyong Liu
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Anjun Ding
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Zhengjiang Fu
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Shengmei Guo
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
| | - Hu Cai
- Department of Chemistry, Nanchang University, Xuefu Rd. 999, Nanchang, 330031, P. R. China.
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2
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Bandehali-Naeini F, Tanbakouchian Z, Farajinia-Lehi N, Mayer N, Shiri M, Breugst M. Two distinct protocols for the synthesis of unsymmetrical 3,4-disubstituted maleimides based on transition-metal catalysts. Org Biomol Chem 2024; 22:380-387. [PMID: 38086692 DOI: 10.1039/d3ob01620j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Two tandem catalytic systems are described for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts as starting materials. 4-Aryl-3-pyrrolyl- and 4-aryl-3-indolyl-maleimides were successfully obtained via a Pd(OAc)2/PPh3 based protocol. In contrast, maleimide-fused pyrrolo and indolo[1,2-a]quinolines were obtained in a complementary methodology using CuI/L-proline. These strategies involved a combination of benzylic amine oxidation, trans-amidation, intramolecular Knoevenagel condensation, and N-arylation reactions. Computational investigations provide further insights into this reaction sequence.
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Affiliation(s)
- Farzaneh Bandehali-Naeini
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Zahra Tanbakouchian
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Noushin Farajinia-Lehi
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Nicolas Mayer
- Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany.
| | - Morteza Shiri
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Martin Breugst
- Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany.
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3
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Thorat VH, Hsieh JC. Nickel-Catalyzed Intramolecular Dual Annulation Reaction of Aryl Nitrile-Containing 1,2,3-Benzotriazin-4(3 H)-ones: A Pathway To Synthesize Luotonin A and Related Polycyclic Pyrroloquinazolinones. Org Lett 2023; 25:7990-7994. [PMID: 37906681 DOI: 10.1021/acs.orglett.3c03142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Herein, we report a nickel-catalyzed intramolecular denitrogenative dual annulation reaction of aryl nitrile-containing 1,2,3-benzotriazine-4(3H)-ones to synthesize polycyclic pyrroloquinazolinones with a tolerance of a wide diversity of substituents. This catalytic reaction is the first denitrogenative transannulation of 1,2,3-benzotriazine-4(3H)-one with nitrile, which can be applied as the critical step to synthesize luotonin A with a high step economy.
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Affiliation(s)
- Vijaykumar H Thorat
- Department of Chemistry, Tamkang University, New Taipei City 251301, Taiwan, Republic of China
| | - Jen-Chieh Hsieh
- Department of Chemistry, Tamkang University, New Taipei City 251301, Taiwan, Republic of China
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4
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Xu R, Wang Z, Zheng Q, Patil P, Dömling A. A Bifurcated Multicomponent Synthesis Approach to Polycyclic Quinazolinones. J Org Chem 2022; 87:13023-13033. [PMID: 36095044 PMCID: PMC9552225 DOI: 10.1021/acs.joc.2c01561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The rapid synthesis of diverse substituted polycyclic
quinazolinones
was achieved by two orthogonal Ugi four-component reaction (Ugi-4CR)-based
protocols: the first two-step approach via an ammonia-Ugi-4CR followed
by palladium-catalyzed annulation; in the second approach, cyanamide
was used unprecedently as an amine component in Ugi-4CR followed by
an AIBN/tributyltin hydride-induced radical reaction. Like no other
method, MCR and cyclization could efficiently construct many biologically
interesting compounds with tailored properties in very few steps.
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Affiliation(s)
- Ruixue Xu
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Zefeng Wang
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Qiang Zheng
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Pravin Patil
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Alexander Dömling
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
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5
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Thorat VH, Tsai YL, Huang YR, Cheng CH, Hsieh JC. Nickel-Catalyzed Denitrogenative Cyclization of 1,2,3,4-Benzothiatriazin-1,1(2 H)-dioxides with Arynes To Synthesize Biaryl Sultams. Org Lett 2022; 24:2915-2920. [DOI: 10.1021/acs.orglett.2c00920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vijaykumar H. Thorat
- Department of Chemistry, Tamkang University, New Taipei City, 251301, Taiwan (R.O.C.)
| | - Yu-Lin Tsai
- Department of Chemistry, Tamkang University, New Taipei City, 251301, Taiwan (R.O.C.)
| | - Yong-Ran Huang
- Department of Chemistry, Tamkang University, New Taipei City, 251301, Taiwan (R.O.C.)
| | - Chien-Hong Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan (R.O.C.)
| | - Jen-Chieh Hsieh
- Department of Chemistry, Tamkang University, New Taipei City, 251301, Taiwan (R.O.C.)
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6
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Goulart TAC, Back DF, Moura E Silva S, Zeni G. Palladium-Catalyzed Cascade 5- endo-dig Cyclization of Ynamides to Form 4-Alkynyloxazolones. J Org Chem 2022; 87:3341-3351. [PMID: 35167299 DOI: 10.1021/acs.joc.1c02978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The selective synthesis of 4-alkynyloxazolones and their further applications as substrates to electrophile-promoted nucleophilic cyclization have been developed. The reaction of ynamides with terminal alkynes proceeded smoothly to give 4-alkynyloxazolones in the presence of a catalytic amount of palladium(II) acetate. The products were obtained with the sequential formation of new C-C and C-O bonds via a cascade procedure. The first step involved a carbon-oxygen bond formation, via a 5-endo-dig closure, which was confirmed by X-ray analyses of the crystalline sample. Subsequently, the reaction of 4-alkynyloxazolones with an electrophilic selenium source gave 3-phenylselanyl benzofuran derivatives via an electrophile-promoted nucleophilic cyclization.
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Affiliation(s)
- Tales A C Goulart
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Davi Fernando Back
- Laboratório de Materiais Inorgânicos, Departamento de Química, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Sidnei Moura E Silva
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
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Yabe R, Ebe Y, Nishimura T. Iridium-catalyzed stereoselective [3+2] annulation of α-oxocarboxylic acids with 1,3-dienes. Chem Commun (Camb) 2021; 57:5917-5920. [PMID: 34008643 DOI: 10.1039/d1cc02003j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The stereoselective annulation of α-oxocarboxylic acids with 1,3-dienes proceeded in the presence of a hydroxoiridium catalyst to give α-hydroxy-γ-lactones in good yields with high 3,5-trans relative stereochemistry. The use of a chiral diene ligand for a cationic iridium complex enabled asymmetric annulation with high enantioselectivity.
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Affiliation(s)
- Ryota Yabe
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
| | - Yusuke Ebe
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
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