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Alahyen I, Taillier C, Lhoste J, Dalla V, Comesse S. N-Benzyloxyacrylamides as Bisnucleophiles in an Organocatalyzed Domino aza-Michael/Morita-Baylis-Hillman Sequence. Org Lett 2024; 26:1926-1930. [PMID: 38407940 DOI: 10.1021/acs.orglett.4c00295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
We herein describe a stereoselective organocatalyzed aza-Michael/Morita-Baylis-Hillman domino reaction between readily accessible acrylamides and α,β-unsaturated carbonyls. This novel, PPh3-promoted atom economic one-pot process features medium to good yields and good stereoselectivity leading to variously substituted piperidin-2-ones bearing an exocyclic olefinic bond, which was shown to be an excellent anchor for further chemical diversification.
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Affiliation(s)
- Ismail Alahyen
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM, 76600 Le Havre, France
| | | | - Jérôme Lhoste
- IMMM, UMR 6283 CNRS, Le Mans Université, 72085 Le Mans, France
| | - Vincent Dalla
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM, 76600 Le Havre, France
| | - Sébastien Comesse
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM, 76600 Le Havre, France
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Chen L, Wang D. A Tunable Cascade Reaction of Ureidomalonates and Alkenyl Azlactones for the Divergent Synthesis of Hydantoins with Distinct Functional Groups. J Org Chem 2024; 89:3365-3382. [PMID: 38363598 DOI: 10.1021/acs.joc.3c02814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
A tunable cascade reaction of ureidomalonates and alkenyl azlactones was disclosed, which gave rise to the construction of N-aroyl α-amino acid ester and imide-functionalized hydantoins in moderate to good yields and with excellent diastereoselectivities. The reaction pathway was precisely manipulated by organocatalysis and phase-transfer/sunlight relay catalysis, respectively, to realize the divergent synthesis. The successful gram-scale preparation of representative products exhibited the application potential of this protocol. Mechanistic studies indicated that the exchange and phase transfer of ethoxy anion played a key role in altering the reaction pathway, and sunlight might accelerate the oxidation process at the late stage of the reaction triggered by phase-transfer catalysis.
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Affiliation(s)
- Lin Chen
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, P. R. China
| | - Di Wang
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, P. R. China
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Wang Z, Tian G, Shi Y, Liu W, Xu X, Li X, Wu L, Xie L. Lewis base-catalyzed cascade [4 + 2]-annulation reaction of N-alkoxy acrylamides and acyl isothiocyanates: facile access to 2-imino-1,3-thiazinone derivatives. Org Biomol Chem 2023; 21:9200-9209. [PMID: 37960944 DOI: 10.1039/d3ob01440a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
A formal [4 + 2]-cycloaddition reaction of N-alkoxy acrylamides and acyl isothiocyanates was developed via a Lewis base-catalyzed cascade aza-nucleophilic addition/thio-Michael addition process under mild conditions. This study provides a facile approach for preparing 2-imino-1,3-thiazinone derivatives in moderate to excellent yields and enriches the field of heterocyclic acrylamide chemistry. The reported method features metal-free reaction conditions, high atom economy, and easy operation. Moreover, the reaction was successfully scaled up and derivatization reactions were successfully performed.
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Affiliation(s)
- Zhaoxue Wang
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Ge Tian
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Yuying Shi
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China
| | - Xiangdong Xu
- Liaocheng Inspection and Testing Center, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lingang Wu
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lei Xie
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
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Xie L, Zhao C, Wang Z, Chen Z, Zhao Y, Liu X, Xu X, Liu W, Li X, Wu L. Synthesis of Polycyclic Imidazolidinones via Cascade [3 + 2]-Annulation of β-Oxo-acrylamides with Cyclic N-Sulfonyl Imines. J Org Chem 2023; 88:15805-15816. [PMID: 37906181 DOI: 10.1021/acs.joc.3c01878] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
An Et3N-catalyzed cascade [3 + 2]-annulation of β-oxo-acrylamides with cyclic N-sulfonyl ketimines or sulfamate-derived imines is developed under mild reaction conditions, which provides a concise and efficient route to access valuable sultam- or sulfamidate-fused imidazolidinone derivatives in good to excellent yields (80-95% yields) with excellent diastereoselectivities (>20:1 drs). The current protocol features atom economy, a transition-metal-free process, and broad functional group tolerance. Moreover, the asymmetric variant of the [3 + 2]-cycloaddition reaction was achieved in the presence of diphenylethanediamine or quinine-based bifunctional squaramide organocatalysts C-1 and C-11, giving the corresponding chiral polycyclic imidazolidinones in 68-90% yields with 25-94% ees and >20:1 drs in all cases.
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Affiliation(s)
- Lei Xie
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Chenyi Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zhaoxue Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zirui Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Yingying Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xinghan Liu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xiangdong Xu
- Liaocheng Inspection and Testing Center, Liaocheng 252000, Shandong, P. R. China
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Lingang Wu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
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