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Zhao H, Ding S, Li D, Chai M, Dai L, Li J, Jiang Y, Weng T, Wang J. Stereoselective Construction of Unsymmetrically Linked Heterocycles via Palladium-Catalyzed Alkyne Insertion/Cycloimidoylation Cascade. J Org Chem 2023; 88:1613-1624. [PMID: 36642919 DOI: 10.1021/acs.joc.2c02660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A novel strategy to access unsymmetrically linked heterocycles via palladium-catalyzed acylcycloimidoylation of alkyne-tethered carbamoyl chlorides with isocyanides has been developed. Functionalized isocyanides were successfully applied as imine-containing heterocycle precursors to capture the vinyl-PdII intermediate, which was generated from a syn-carbopalladation of alkyne, followed by subsequent intramolecular C-H bond activation/imidoylative Heck reactions. Methylene oxindoles within Z-tetrasubstituted olefins were obtained in high yields with excellent stereoselectivities. Broad functional groups were well tolerated under mild reaction conditions.
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Affiliation(s)
- Haixia Zhao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Shumin Ding
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Dan Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Minxue Chai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Lixiong Dai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Jing Li
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, People's Republic of China
| | - Yuchen Jiang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Tongqing Weng
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Jian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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2
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Arora R, Rodríguez JF, Whyte A, Lautens M. Accessing Unsymmetrically Linked Heterocycles through Stereoselective Palladium‐Catalyzed Domino Cyclization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112288] [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)
- Ramon Arora
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - José F. Rodríguez
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Andrew Whyte
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Davenport Research Laboratories Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
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3
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Arora R, Rodríguez JF, Whyte A, Lautens M. Accessing Unsymmetrically Linked Heterocycles through Stereoselective Palladium-Catalyzed Domino Cyclization. Angew Chem Int Ed Engl 2022; 61:e202112288. [PMID: 34739741 DOI: 10.1002/anie.202112288] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Indexed: 12/23/2022]
Abstract
A palladium-catalyzed strategy is presented to synthesize unsymmetrically linked heterocycles within stereoselective tetrasubstituted olefins. This reaction is proposed to occur via a vinyl-PdII intermediate capable of initiating the cyclization of various alkyne-tethered nucleophiles. Products are formed in up to 96 % yield and excellent stereoselectivities are obtained using low catalyst loadings. This transformation was scalable up to 1 mmol and mechanistic studies suggest a syn-carbopalladation of the carbamoyl chloride followed by PdII -catalyzed cyclization of alkyne-tethered nucleophiles.
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Affiliation(s)
- Ramon Arora
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - José F Rodríguez
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Andrew Whyte
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
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Sandeep K, Siva Reddy A, Kumara Swamy KC. Palladium-catalysed cyclisation of ynamides and propargyl tethered iodosulfonamides with boronic acids leading to benzosultams. Org Biomol Chem 2021; 19:6871-6882. [PMID: 34323909 DOI: 10.1039/d1ob00925g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An efficient and straightforward Pd-catalysed synthesis of diversely substituted sultams utilising ynamides and boronic acids is disclosed; toluene was found to be the most suitable solvent for this transformation. This strategy has been successfully applied to generate dihydrobenzo[d]isothiazole 1,1-dioxides and dihydro-2H-benzo[e][1,2]thiazine 1,1-dioxides. The advantages of this protocol are good functional group tolerance, broad substrate scope, high-yielding reaction and low catalyst loading to access benzofused sultams with five-/six-membered rings. The synthetic utility has been demonstrated by a gram-scale synthesis. A plausible catalytic cycle involving carbopalladation has been proposed for this transformation.
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Affiliation(s)
- K Sandeep
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India.
| | - Alla Siva Reddy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India.
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India.
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Liu YT, Cheng CW, Lu HC, Chang TY, Chen CY, Yang HC, Yu SH, Zehra S, Liu SH, Leung MK, Lee KM, Chen HH. One-Pot CuI/DBU-Catalyzed Carboxylative Cyclization toward Oxazolidinones Using Recyclable Molecular Sieves as Efficient Promoters for Fixation of CO 2 in Water Medium. J Org Chem 2020; 85:13655-13663. [PMID: 33045828 DOI: 10.1021/acs.joc.0c01833] [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
An efficient one-pot synthesis of oxazolidinones was developed through CuI/DBU/MS joint system-catalyzed carboxylative cyclization of arylacetylene, arylaldehyde, and arylamine in water medium under a 1 atm carbon dioxide (CO2) atmosphere. The 4 Å molecular sieves (MSs) were added to improve CO2 capture and facilitate carboxylation to give the products in high yields. The CuI/DBU/MS system is robust and highly effective for the reactions with different substrates, and some target products were obtained in an excellent yield of ∼96%, with no side products in the final step.
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Affiliation(s)
- Yu-Te Liu
- Department of Chemistry, National Kaohsiung Normal University, Kaohsiung 824, Taiwan
| | - Chi-Wei Cheng
- Department of Chemistry, National Kaohsiung Normal University, Kaohsiung 824, Taiwan
| | - Huan-Chang Lu
- Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Ting-Yu Chang
- Department of Chemistry, National Kaohsiung Normal University, Kaohsiung 824, Taiwan
| | - Chun-Ying Chen
- Department of Chemistry, National Kaohsiung Normal University, Kaohsiung 824, Taiwan
| | - Hao-Chun Yang
- Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Shih-Hsien Yu
- Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Syeda Zehra
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.,Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan.,Taiwan International Graduate Program, Academia Sinica, Taipei 106, Taiwan
| | - Shu-Hui Liu
- Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Man-Kit Leung
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Kwang-Ming Lee
- Department of Chemistry, National Kaohsiung Normal University, Kaohsiung 824, Taiwan
| | - Hsiu-Hui Chen
- Department of Chemistry, National Kaohsiung Normal University, Kaohsiung 824, Taiwan.,Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan
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