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Zhang D, Li H, Yi D, Tu S, Qi Z, Wei S, Fu Q, Fu H, Du X. Ti-catalyzed regioselective ring-opening alkynylation of epoxides with haloalkynes. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
New catalytic strategies that leverage single-electron redox events have provided chemists with useful tools for solving synthetic problems. In this context, Ti offers opportunities that are complementary to late transition metals for reaction discovery. Following foundational work on epoxide reductive functionalization, recent methodological advances have significantly expanded the repertoire of Ti radical chemistry. This Synopsis summarizes recent developments in the burgeoning area of Ti radical catalysis with a focus on innovative catalytic strategies such as radical redox-relay and dual catalysis.
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Affiliation(s)
- Terry McCallum
- Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States
| | - Xiangyu Wu
- Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States
| | - Song Lin
- Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States
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Chenniappan VK, Silwal S, Rahaim RJ. Ni/Ti Dual Catalytic Cross-Coupling of Nitriles and Organobromides To Access Ketones. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00244] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vinoth Kumar Chenniappan
- Department of Chemistry, Oklahoma State University, 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
| | - Sajan Silwal
- Department of Chemistry, Oklahoma State University, 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
| | - Ronald J. Rahaim
- Department of Chemistry, Oklahoma State University, 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
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Watanabe K, Satoh Y, Kamei M, Furukawa H, Fuji M, Obora Y. NbCl5/Zn/PCy3-System-Catalyzed Intramolecular [2 + 2 + 2] Cycloadditions of Diynes and Alkenes To Form Bicyclic Cyclohexadienes. Org Lett 2017; 19:5398-5401. [DOI: 10.1021/acs.orglett.7b02672] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keisuke Watanabe
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Satoh
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Motofumi Kamei
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Hirohisa Furukawa
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Maito Fuji
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Obora
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
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Liao Y, Liu X, Zhang Y, Xu Y, Xia Y, Lin L, Feng X. Asymmetric [3 + 2] cycloaddition of donor-acceptor aziridines with aldehydes via carbon-carbon bond cleavage. Chem Sci 2016; 7:3775-3779. [PMID: 30155018 PMCID: PMC6013814 DOI: 10.1039/c5sc04151a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/23/2016] [Indexed: 12/17/2022] Open
Abstract
An enantioselective [3 + 2] annulation of donor-acceptor aziridines with aldehydes has been realized using a Nd(OTf)3/N,N'-dioxide/LiNTf2 catalyst system, providing various chiral cis-1,3-oxazolidines in moderate to good yields with high levels of stereocontrol. A relay catalytic process is proposed where LiNTf2 promotes the formation of azomethine ylide intermediates, and a chiral Nd(iii)-N,N'-dioxide complex accelerates the asymmetric cycloaddition.
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Affiliation(s)
- Yuting Liao
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Yu Zhang
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Yali Xu
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Yong Xia
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , China
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Wang L, Xie YB, Huang NY, Yan JY, Hu WM, Liu MG, Ding MW. Catalytic aza-Wittig Reaction of Acid Anhydride for the Synthesis of 4H-Benzo[d][1,3]oxazin-4-ones and 4-Benzylidene-2-aryloxazol-5(4H)-ones. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00165] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Long Wang
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
- Hubei Key Laboratory
of Natural Products Research and Development, China Three Gorges University, Yichang, Hubei 443002, China
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan, Hubei 430079, China
| | - Yi-Bi Xie
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
| | - Nian-Yu Huang
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
- Hubei Key Laboratory
of Natural Products Research and Development, China Three Gorges University, Yichang, Hubei 443002, China
| | - Jia-Ying Yan
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
| | - Wei-Min Hu
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
| | - Ming-Guo Liu
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
- Hubei Key Laboratory
of Natural Products Research and Development, China Three Gorges University, Yichang, Hubei 443002, China
| | - Ming-Wu Ding
- College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan, Hubei 430079, China
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