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Angles SN, Guo W, Darko K, Erzuah M, Pauley KG, Promise IE, Goodell JR, Tantillo DJ, Mitchell TA. Net Intermolecular Silyloxypyrone-Based (5+2) Cycloadditions Utilizing Amides as Enabling and Cleavable Tethers. Org Lett 2023; 25:7137-7141. [PMID: 37750489 DOI: 10.1021/acs.orglett.3c02635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Silyloxypyrone-based (5+2) cycloadditions were facilitated by amides that allowed for increased reactivity and a pathway for cleaving the tether to afford net intermolecular cycloadducts. Various amides underwent facile cycloaddition, and several experiments revealed steric and electronic factors that accelerate the reaction. tert-Butyl amides reacted faster than less hindered variants in multiple cases. In the case of dearomative oxidopyrylium-indole (5+2) cycloadditions, an amine-based tether was ineffective, whereas amides enabled this powerful transformation. Theoretical calculations evidenced a concerted asynchronous reaction in which the amide facilitates a conformational driving force enabling cycloaddition. Finally, a one-pot acylation/(5+2) cycloaddition/nucleophilic lactam opening and other examples of tosyl lactam opening of a modified cycloadduct were demonstrated.
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Affiliation(s)
- Susanna N Angles
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
| | - Wentao Guo
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Kwabena Darko
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
| | - Marymoud Erzuah
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
| | - Kenneth G Pauley
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
| | - Ifeanyichukwu E Promise
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
| | - John R Goodell
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - T Andrew Mitchell
- Department of Chemistry, Illinois State University, Campus Box 4160, Normal, Illinois 61790-4160, United States
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Wang X, Luo Y, Li J, Wang C, Liu Q, He Y, Luo S, Zhu Q. Parallel Kinetic Resolution through Palladium-Catalyzed Enantioselective Cycloimidoylation: En Route to Divergent N-Heterocycles Bearing a Quaternary Stereogenic Center. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Xilong Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou510530, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing100049, China
| | - Yu Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou510530, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing100049, China
| | - Jing Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou510530, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing100049, China
| | - Chaoqin Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou510530, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing100049, China
| | - Qianwen Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning530001, China
| | - Yimiao He
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning530001, China
| | - Shuang Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou510530, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing100049, China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou510530, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing100049, China
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning530001, China
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Dong Z, Liu P, Crochet A, Kilbinger AFM. Fast Ring-Opening Metathesis Polymerization of Tricyclic Oxanorbornene Derivatives. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhenghao Dong
- Department of Chemistry, University of Fribourg, Chemin du Museé 9, CH-1700 Fribourg, Switzerland
| | - Peng Liu
- Department of Chemistry, University of Fribourg, Chemin du Museé 9, CH-1700 Fribourg, Switzerland
| | - Aurelien Crochet
- Department of Chemistry, University of Fribourg, Chemin du Museé 9, CH-1700 Fribourg, Switzerland
| | - Andreas F. M. Kilbinger
- Department of Chemistry, University of Fribourg, Chemin du Museé 9, CH-1700 Fribourg, Switzerland
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Morja MI, Patel JJ, Chauhan PM, Chikhalia KH. An efficient synthesis of strained thio-bridged compounds via Pd(0) catalyzed intramolecular Csp2(aryl)-Csp3(alkyl) cross dehydrohalogenative coupling reaction. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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