1
|
Wang T, Guan JX, Tan YX, Tian P. Cobalt-Catalyzed Chemo- and Stereoselective Arylative Carbocyclization of 1,6-Allenynes. Org Lett 2023; 25:5935-5940. [PMID: 37539986 DOI: 10.1021/acs.orglett.3c01958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Different from the well-investigated enynes, transition-metal-catalyzed carbocyclization reactions of allenynes are more attractive as a result of the unique structure and versatile reactivity of allenes. Herein, we report the first cobalt-catalyzed highly chemo- and stereoselective arylative carbocyclization of 1,6-allenynes with arylboronic acids, affording five-membered carbocycles and heterocycles with moderate to high yields, broad substrate scope, and wide functional group compatibility. Moreover, several mechanistic experiments were conducted to gain insight into the reaction process.
Collapse
Affiliation(s)
- Tao Wang
- The Research Center of Chiral Drugs, Shanghai Frontiers Science Center of TCM Chemical Biology, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, People's Republic of China
| | - Ji-Xun Guan
- The Research Center of Chiral Drugs, Shanghai Frontiers Science Center of TCM Chemical Biology, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, People's Republic of China
| | - Yun-Xuan Tan
- The Research Center of Chiral Drugs, Shanghai Frontiers Science Center of TCM Chemical Biology, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, People's Republic of China
| | - Ping Tian
- The Research Center of Chiral Drugs, Shanghai Frontiers Science Center of TCM Chemical Biology, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, People's Republic of China
| |
Collapse
|
2
|
Isoda K, Sato Y. Cobalt(I)-Catalyzed Reductive Cyclization of Enynes and Diynes Using Hydrogen Gas as a Reductant. Org Lett 2023; 25:2103-2107. [PMID: 36943924 DOI: 10.1021/acs.orglett.3c00524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Reductive cyclization of enynes and diynes by using H2 gas as a reductant was realized, and the corresponding cyclized products were obtained in good yields without olefin isomerization and over-reduction of the products. By an experiment using D2 instead of H2, it was confirmed that H2 unambiguously operates as a reductant in this reaction. The protocol of the reaction is very economical and user-friendly, using air- and moisture-stable CoBr2·6H2O and 1 atm of pressure of H2.
Collapse
Affiliation(s)
- Kaho Isoda
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yoshihiro Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| |
Collapse
|
3
|
Unveiling the Chemistry and Synthetic Potential of Catalytic Cycloaddition Reaction of Allenes: A Review. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020704. [PMID: 36677762 PMCID: PMC9860688 DOI: 10.3390/molecules28020704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/13/2023]
Abstract
Allenes with two carbon-carbon double bonds belong to a unique class of unsaturated hydrocarbons. The central carbon atom of allene is sp hybridized and forms two σ-bonds and two π-bonds with two terminal sp2 hybridized carbon atoms. The chemistry of allenes has been well documented over the last decades. They are more reactive than alkenes due to higher strain and exhibit significant axial chirality, thus playing a vital role in asymmetric synthesis. Over a variety of organic transformations, allenes specifically undergo classical metal catalyzed cycloaddition reactions to obtain chemo-, regio- and stereoselective cycloadducts. This review briefly describes different types of annulations including [2+2], [2+2+1], [3+2], [2+2+2], [4+2], [5+2], [6+2] cycloadditions using titanium, cobalt, rhodium, nickel, palladium, platinum, gold and phosphine catalyzed reactions along with a mechanistic study of some highlighted protocols. The synthetic applications of these reactions towards the synthesis of natural products such as aristeromycin, ent-[3]-ladderanol, waihoensene(-)-vindoline and (+)-4-epi-vindoline have also been described.
Collapse
|
4
|
Oonishi Y, Hosotani A, Yokoe T, Sato Y. Rhodium(I)-Catalyzed Enantioselective Hydroacylation of Racemic Allenals via Dynamic Kinetic Resolution. Org Lett 2019; 21:4120-4123. [DOI: 10.1021/acs.orglett.9b01307] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Yoshihiro Oonishi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Nishi 6, Kita 12, Kita-ku, Sapporo 060-0812, Japan
| | - Akihito Hosotani
- Faculty of Pharmaceutical Sciences, Hokkaido University, Nishi 6, Kita 12, Kita-ku, Sapporo 060-0812, Japan
| | - Takayuki Yokoe
- Faculty of Pharmaceutical Sciences, Hokkaido University, Nishi 6, Kita 12, Kita-ku, Sapporo 060-0812, Japan
| | - Yoshihiro Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Nishi 6, Kita 12, Kita-ku, Sapporo 060-0812, Japan
| |
Collapse
|
5
|
Tian R, Li Y, Liang C. Mechanism of Rhodium(III)-Catalyzed C-H Activation/Annulation of Aromatic Amide with α-Allenol: A Computational Study. J Org Chem 2019; 84:2642-2651. [PMID: 30735381 DOI: 10.1021/acs.joc.8b03078] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
With the help of DFT calculations, the reaction mechanisms of the rhodium(III)-catalyzed C-H activation/annulation between aromatic amide and α-allenol leading to the formation of isoindolinone have been theoretically investigated. Our calculated results show that the catalytic cycle consists of four stages: N-H deprotonation and C-H activation (Stage I), allene insertion, rearrangement and isomerization (Stage II), β-H elimination and enol-keto tautomerism (Stage III), and catalyst regeneration resulting in the five-membered ring product (Stage IV). For stage IV, besides the reaction paths proposed by the experimentalists, i.e., the insertion and reductive elimination (labeled as path a) and the reductive elimination and hydroamination (labeled as path b), an alternative path which involves C-N and C-H reductive eliminations (labeled as path c) was proposed and examined. The computational results show that the newly established path c is more energetically favorable than the reaction paths proposed by the experimentalists (paths a and b). The allene (non-terminal double bond) insertion step contributes to the rate-determining step with an overall activation free energy of 24.6 kcal/mol. Our study is beneficial for a better comprehension of the reaction mechanisms and provides a significant suggestion for further development of similar reactions.
Collapse
Affiliation(s)
- Ruixue Tian
- School of Petroleum and Chemical Engineering , Dalian University of Technology , Panjin 124221 , P.R. China
| | - Yan Li
- School of Chemical Engineering , University of Science and Technology Liaoning , Anshan 114051 , P.R. China
| | - Changhai Liang
- School of Petroleum and Chemical Engineering , Dalian University of Technology , Panjin 124221 , P.R. China
| |
Collapse
|
6
|
Hato Y, Oonishi Y, Yamamoto Y, Nakajima K, Sato Y. Stereoselective Construction of Spiro-Fused Tricyclic Frameworks by Sequential Reaction of Enynes, Imines, and Diazoalkenes with Rh(I) and Rh(II) Catalysts. J Org Chem 2016; 81:7847-54. [DOI: 10.1021/acs.joc.6b01502] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshio Hato
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Shionogi Innovation Center for Drug Discovery, Shionogi & Company, Ltd., Sapporo 001-0021, Japan
| | - Yoshihiro Oonishi
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yasunori Yamamoto
- Division
of Chemical Process Engineering and Frontier Chemistry Center, Faculty
of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Kiyohiko Nakajima
- Department
of Chemistry, Aichi University of Education, Kariya 448-8542, Japan
| | - Yoshihiro Sato
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| |
Collapse
|
7
|
Oonishi Y, Hato Y, Sato Y. Rhodium(I)-Catalyzed Diastereoselective Cycloisomerization of Enynes with Tethered (S)-2-Methyl-2-propanesulfinyl Imine. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600310] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
8
|
Lledó A, Pla-Quintana A, Roglans A. Allenes, versatile unsaturated motifs in transition-metal-catalysed [2+2+2] cycloaddition reactions. Chem Soc Rev 2016; 45:2010-23. [DOI: 10.1039/c5cs00535c] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ThisTutorial Reviewhighlights the versatility of allenes as unsaturated substrates in transition-metal-catalysed [2+2+2] cycloaddition reactions in generating complex architectures.
Collapse
Affiliation(s)
- A. Lledó
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química
- Universitat de Girona (UdG)
- Facultat de Ciències
- 17071 Girona
- Spain
| | - A. Pla-Quintana
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química
- Universitat de Girona (UdG)
- Facultat de Ciències
- 17071 Girona
- Spain
| | - A. Roglans
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química
- Universitat de Girona (UdG)
- Facultat de Ciències
- 17071 Girona
- Spain
| |
Collapse
|
9
|
Hernández-Díaz C, Rubio E, González JM. Gold-Catalyzed Allenamide [2+2+2]-Cyclotrimerization. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501364] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|