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Yamini, Sharma S, Das P. Rhodium catalyzed 2‐alkyl‐benzimidazoles synthesis from benzene‐1,2‐diamines and tertiary alkylamines as alkylating agents. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yamini
- Chemical Technology Division CSIR‐Institute of Himalayan Bioresource Technology (IHBT) Palampur Himachal Pradesh 176061 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Saurabh Sharma
- Chemical Technology Division CSIR‐Institute of Himalayan Bioresource Technology (IHBT) Palampur Himachal Pradesh 176061 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Pralay Das
- Chemical Technology Division CSIR‐Institute of Himalayan Bioresource Technology (IHBT) Palampur Himachal Pradesh 176061 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
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Tan TD, Zhu XQ, Bu HZ, Deng G, Chen YB, Liu RS, Ye LW. Copper-Catalyzed Cascade Cyclization of Indolyl Homopropargyl Amides: Stereospecific Construction of Bridged Aza-[n.2.1] Skeletons. Angew Chem Int Ed Engl 2019; 58:9632-9639. [PMID: 31095848 DOI: 10.1002/anie.201904698] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Indexed: 11/09/2022]
Abstract
Catalytic cycloisomerization-initiated cascade cyclizations of terminal alkynes have received tremendous interest, and been widely used in the facile synthesis of a diverse array of valuable complex heterocycles. However, these tandem reactions have been mostly limited to noble-metal catalysis, and are initiated by an exo-cyclization pathway. Reported herein is an unprecedented copper-catalyzed endo-cyclization-initiated tandem reaction of indolyl homopropargyl amides, where copper catalyzes both the hydroamination and Friedel-Crafts alkylation process. This method allows the practical and atom-economical synthesis of valuable bridged aza-[n.2.1] skeletons (n=3-6) with wide substrate scope, and excellent diastereoselectivity and enantioselectivity by a chirality-transfer strategy. Moreover, the mechanistic rationale for this novel cascade cyclization is also strongly supported by control experiments, and is distinctively different from the related gold catalysis.
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Affiliation(s)
- Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Hao-Zhen Bu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Guocheng Deng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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Tan T, Zhu X, Bu H, Deng G, Chen Y, Liu R, Ye L. Copper‐Catalyzed Cascade Cyclization of Indolyl Homopropargyl Amides: Stereospecific Construction of Bridged Aza‐[
n
.2.1] Skeletons. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904698] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tong‐De Tan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Xin‐Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Hao‐Zhen Bu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Guocheng Deng
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Yang‐Bo Chen
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Rai‐Shung Liu
- Department of ChemistryNational Tsing-Hua University Hsinchu Taiwan
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
- State Key Laboratory of Elemento-Organic ChemistryNankai University Tianjin 300071 China
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Ding G, Wu X, Jiang L, Zhang Z, Xie X. Reduction of Benzolactams to Isoindoles via an Alkoxide-Catalyzed Hydrosilylation. Org Lett 2017; 19:6048-6051. [PMID: 29077418 DOI: 10.1021/acs.orglett.7b02739] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An alkoxide-catalyzed reduction of benzolactams to isoindoles with silanes was realized. With t-BuOK as the catalyst and Ph2SiH2 as the reductant, a series of benzolactams containing different functional groups were reduced to the corresponding isoindoles, which could be captured by N-phenyl maleimide to form Diels-Alder products in moderate to good yields. Deuterium labeling studies and the hydrosilylation of benzolactam in DMF indicated that the deprotonation of benzolactams took place at C3 potion during the reduction.
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Affiliation(s)
- Guangni Ding
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoyu Wu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Lili Jiang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Zhaoguo Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaomin Xie
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
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Windle J, Allison M, Shepherd H, Sridharan V. Sequential one-pot three component rhodium-catalysed isomerisation/1,3-dipolar cycloaddition cascades to fused-ring heterocycles. RSC Adv 2014. [DOI: 10.1039/c3ra45906c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Heugebaert TSA, Roman BI, Stevens CV. Synthesis of isoindoles and related iso-condensed heteroaromatic pyrroles. Chem Soc Rev 2012; 41:5626-40. [PMID: 22782188 DOI: 10.1039/c2cs35093a] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Over the past few years, isoindoles have found wide application in materials science. Isoindole containing BODIPY dyes are highly fluorescent materials and have been extensively used in various fields of science. Phthalocyanines, metal containing cyclic tetramers of isoindole, form coordination complexes with most elements of the periodic table. These complexes are intensely coloured and are used as pigments and dyes. However, isoindoles are relatively unstable 10π-heteroaromatic systems and few synthetic methods provide these compounds in good yields. This tutorial review will give an overview of the reported synthetic methods towards isoindoles and related heteroaromatic systems over a time span of approximately 10 years (2000 to current), including the applications where they have been reported. The importance of the field will be illustrated and factors influencing product stability will be discussed.
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Affiliation(s)
- Thomas S A Heugebaert
- Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Gent, Belgium
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Gorman RM, Little MA, Morris JA, Sridharan V. Rhodium-catalysed isomerisation/formal 1,3-dipolar cycloaddition cascades to fused-ring heterocycles. Chem Commun (Camb) 2012; 48:9537-9. [DOI: 10.1039/c2cc35372e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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De Luca L, Porcheddu A. Microwave-Assisted Synthesis of Polysubstituted Benzimidazoles by Heterogeneous Pd-Catalyzed Oxidative C-H Activation of Tertiary Amines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Huck L, González JF, de la Cuesta E, Menéndez JC, Avendaño C. 1,3-Dipolar cycloadditions from tricyclic hemiaminals. Synthesis of the quinocarcin core through catalyst-free generation of azomethine ylides. Org Biomol Chem 2011; 9:6271-7. [DOI: 10.1039/c1ob05181d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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An expedient synthesis of indolo[1,2-a]quinolines via Mn(OAc)3-mediated oxidative free radical cyclization and NaI/O2-assisted dealkoxycarbonylation/aerobic oxidation cascade. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.092] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Solé D, Serrano O. Palladium-catalysed synthesis of 1-isoindolecarboxylic acid esters and sequential Diels–Alder reactions: access to bridged- and fused-ring heterocycles. Org Biomol Chem 2009; 7:3382-4. [DOI: 10.1039/b909701e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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