1
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Doraghi F, Ameli M, Ansariashlaghi S, Larijani B, Mahdavi M. NHC-Catalyzed Enantioselective Transformations Involving α-Bromoenals. CHEM REC 2024; 24:e202400005. [PMID: 38587150 DOI: 10.1002/tcr.202400005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/21/2024] [Indexed: 04/09/2024]
Abstract
α-Haloenals, especially, α-bromoenals considered as one of the important building blocks in organic synthesis. They can participate in various (3+2)-, (3+3)-, (3+4)-, and (2+4)-annulation reactions with other organic molecules in the presence of an NHC catalyst to produce enantioenriched carbo-, and heterocyclic compounds. Herein, we have described NHC-catalyzed enantioselective transformations of α-bromoenals in the synthesis of various heterocycles, and carbocycles, as well as acyclic organic compounds.
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Affiliation(s)
- Fatemeh Doraghi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411713119, Tehran, Iran
| | - Mahmoud Ameli
- School of Chemistry, College of Science, University of Tehran, 1417614411, Tehran, Iran
| | - Shirin Ansariashlaghi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411713119, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411713119, Tehran, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411713119, Tehran, Iran
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2
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Liu B, Duan XY, Li J, Wu Y, Li Y, Qi J. N-Heterocyclic Carbene-Catalyzed [3 + 2] Annulation of 3,3'-Bisoxindoles with α-Bromoenals: Enantioselective Construction of Contiguous Quaternary Stereocenters. Org Lett 2022; 24:5929-5934. [PMID: 35947030 DOI: 10.1021/acs.orglett.2c02180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An NHC-catalyzed enantio- and diastereoselective [3 + 2] annulation of α-bromoenals with bisoxindoles is developed, affording efficient access to various spirocyclic bisoxindole alkaloids. This protocol tolerates a broad substrates scope, with various spirocyclic bisoxindoles obtained in generally excellent enantioselectivities. More importantly, two contiguous sterically congested all-carbon quaternary stereocenters are successfully created during this process.
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Affiliation(s)
- Binghao Liu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China
| | - Xiao-Yong Duan
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Hebei University, Baoding 071002, People's Republic of China
| | - Jiahan Li
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China
| | - Yatong Wu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China
| | - Yanting Li
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China
| | - Jing Qi
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Hebei University, Baoding 071002, People's Republic of China
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3
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Solanke PR, Cinsani R, Nayani K, Mainkar PS, Chandrasekhar S. Quaternary carbon construction through Piancatelli rearrangement: easy access to spirocyclopentenones. Chem Commun (Camb) 2022; 58:5530-5533. [PMID: 35420603 DOI: 10.1039/d2cc00050d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new and efficient approach to a series of novel multifunctionalized spirocyclopentenone scaffolds through Piancatelli rearrangement was developed under metal-free conditions. This method has been successfully applied to O-, N- and C-nucleophiles with excellent yields.
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Affiliation(s)
- Pooja R Solanke
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Radhika Cinsani
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kiranmai Nayani
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prathama S Mainkar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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4
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Parhami A, Yavari I. A consecutive synthesis of spirocyclopentanes from 2,4-dioxo-arylbutanoates, malononitrile and vicinal dicarbonyl compounds. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1955269] [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]
Affiliation(s)
- Azadeh Parhami
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Issa Yavari
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
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5
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N-heterocyclic carbene-catalyzed intramolecular aza-Michael addition of alkyl amines to α,β-unsaturated carboxylic acid: Synthesis of pyrrolidines and piperidines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Pavithra T, Devi ES, Maheswari CU. Recent Advances in N‐Heterocyclic Carbene Catalyzed Oxidative Cyclization for the Formation of Heterocycles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100289] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Pavithra
- Department of Chemistry, School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 India
| | - E. Sankari Devi
- Department of Chemistry, School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 India
| | - C. Uma Maheswari
- Department of Chemistry, School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 India
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7
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Ghosh A, Shee S, Barik S, Gonnade RG, Biju AT. Enantioselective Synthesis of 5,6-Dihydroindolizines by N-Heterocyclic Carbene (NHC)-Catalyzed Core-Structure-Inspired Strategy of Azolium-Enolate Cascade. Org Lett 2021; 23:5223-5228. [PMID: 34160226 DOI: 10.1021/acs.orglett.1c01761] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The core-structure motivated design has allowed the enantioselective synthesis of 5,6-dihydroindolizines via N-heterocyclic carbene (NHC) catalysis. The NHC-catalyzed reaction of α,β-unsaturated aldehydes with the suitably substituted pyrrole derivatives proceed via the initial generation of α,β-unsaturated acylazoliums from enals, and enolates from pyrroles and the reaction culminated in an efficient cascade process involving the Michael-aldol-lactonization-decarboxylation sequence to afford the products in reasonable yields and high selectivities. The method is further extended to the construction of spirocyclic 5,6-dihydroindolizines.
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Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Sayan Shee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Shilpa Barik
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Rajesh G Gonnade
- Centre for Materials Characterization, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
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8
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Ghosh A, Biju AT. Revealing the Similarities of α,β-Unsaturated Iminiums and Acylazoliums in Organocatalysis. Angew Chem Int Ed Engl 2021; 60:13712-13724. [PMID: 33205860 DOI: 10.1002/anie.202012581] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Indexed: 01/05/2023]
Abstract
The secondary amine-catalyzed reactions proceeding via α,β-unsaturated iminiums and the N-heterocyclic carbene (NHC)-catalyzed transformations taking place via α,β-unsaturated acylazoliums are the two widely used electrophilic intermediates in organocatalysis. Over the last two decades, these two intermediates are extensively utilized for the enantioselective construction of valuable molecules. Both intermediates are generated by the covalent binding of catalysts to the substrates leading to LUMO activation of α,β-unsaturated carbonyls. A variety of soft nucleophiles are known to add to the α,β-unsaturated iminiums and acylazoliums in a conjugate fashion, and in many cases, striking similarity in reactivity has been observed. Having said this, there are few cases where these intermediates exhibit difference in reactivity. This Minireview is aimed at highlighting the resemblances in reactivity between α,β-unsaturated iminiums and acylazoliums thereby shedding light on the unnoticed parallels of the two intermediates in organocatalysis.
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Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
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9
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Ghosh A, Biju AT. Revealing the Similarities of α,β‐Unsaturated Iminiums and Acylazoliums in Organocatalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012581] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry Indian Institute of Science Bangalore 560012 India
| | - Akkattu T. Biju
- Department of Organic Chemistry Indian Institute of Science Bangalore 560012 India
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10
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Jiang Z, Toffano M, Vo‐Thanh G, Bournaud C. Bifunctional N‐Heterocylic Carbene‐Catalyzed Highly Enantioselective Trans‐Cyclopentannulation of Enals and Enones via Homoenolate. ChemCatChem 2020. [DOI: 10.1002/cctc.202001513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhiwei Jiang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
| | - Martial Toffano
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
| | - Giang Vo‐Thanh
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
| | - Chloée Bournaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
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11
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Devi ES, Pavithra T, Tamilselvi A, Nagarajan S, Sridharan V, Maheswari CU. N-Heterocyclic Carbene Catalyzed Synthesis of Trisubstituted Epoxides via Tandem Amidation/Epoxidation Sequence. Org Lett 2020; 22:3576-3580. [PMID: 32271025 DOI: 10.1021/acs.orglett.0c01017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A tandem amidation/epoxidation sequence between various substituted chalcones and N,N-dimethylformamide (DMF) for the synthesis of trisubstituted epoxides employing N-heterocyclic carbene catalysis was developed. This reaction was performed under metal-free conditions in the presence of tert-butyl hydroperoxide (TBHP) as the oxidant. Trisubstituted epoxides bearing a ketone and an amide functionality (N,N-dimethyl formyl group) were synthesized starting from a wide range of chalcones in moderate to good yields with excellent diastereoselectivity.
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Affiliation(s)
- E Sankari Devi
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, India
| | - Thangavel Pavithra
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, India
| | - A Tamilselvi
- Department of Chemistry, Thiagarajar College, Madurai-625009, India
| | - Subbiah Nagarajan
- Department of Chemistry, National Institute of Technology-Warangal, Warangal-506004, India
| | - Vellaisamy Sridharan
- Department of Chemistry and Chemical Sciences, Central University of Jammu, Rahya-Suchani (Bagla), District-Samba, Jammu-181143, J&K, India
| | - C Uma Maheswari
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, India
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12
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Wu S, Liu C, Luo G, Jin Z, Zheng P, Chi YR. NHC‐Catalyzed Chemoselective Reactions of Enals and Aminobenzaldehydes for Access to Chiral Dihydroquinolines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909479] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Shuquan Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou University Guiyang 550025 China
| | - Changyi Liu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou University Guiyang 550025 China
| | - Guoyong Luo
- School of PharmacyGuizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou University Guiyang 550025 China
| | - Pengcheng Zheng
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou University Guiyang 550025 China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou University Guiyang 550025 China
- Division of Chemistry & Biological ChemistrySchool of Physical & Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
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13
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Wu S, Liu C, Luo G, Jin Z, Zheng P, Chi YR. NHC-Catalyzed Chemoselective Reactions of Enals and Aminobenzaldehydes for Access to Chiral Dihydroquinolines. Angew Chem Int Ed Engl 2019; 58:18410-18413. [PMID: 31604001 DOI: 10.1002/anie.201909479] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 09/21/2019] [Indexed: 12/31/2022]
Abstract
An N-heterocyclic carbene (NHC)-catalyzed reaction between α-bromoenals and 2-aminoaldehydes has been developed. Key steps include chemoselective reaction of the NHC catalyst with one of the aldehyde substrates (the bromoenal) to eventually generate an α,β-unsaturated acylazolium intermediate. Addition of the nitrogen atom of aminoaldehyde to the unsaturated azolium ester intermediate followed by intramolecular aldol reaction, β-lactone formation, and decarboxylation leads to chiral dihydroquinolines with high optical purity. The dihydroquinoline products, which are quickly prepared by using this method, can be readily transformed into a diverse set of functional molecules such as pyridines and chiral piperidines.
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Affiliation(s)
- Shuquan Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Changyi Liu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Guoyong Luo
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Pengcheng Zheng
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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14
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Ghosh A, Barik S, Biju AT. NHC-Catalyzed [3 + 3] Annulation of Thioamides and Modified Enals for the Enantioselective Synthesis of Functionalized Thiazinones. Org Lett 2019; 21:8598-8602. [PMID: 31618035 DOI: 10.1021/acs.orglett.9b03188] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
N-Heterocyclic carbene (NHC)-catalyzed [3 + 3] annulation of thioamides with modified enals allowing the enantioselective synthesis of functionalized 1,3-thiazin-4-ones is reported. The NHC generated from the chiral triazolium salt was optimal and the reaction is initiated by the thia-Michael addition to catalytically generated α,β-unsaturated acylazolium intermediates derived from 2-bromoenals, followed by intramolecular cyclization. This operationally simple procedure offers a straightforward and rapid access to target compounds in moderate to good yields and enantiomeric ratio values.
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Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry , Indian Institute of Science , Bangalore - 560012 , India
| | - Soumen Barik
- Department of Organic Chemistry , Indian Institute of Science , Bangalore - 560012 , India
| | - Akkattu T Biju
- Department of Organic Chemistry , Indian Institute of Science , Bangalore - 560012 , India
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15
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Construction of substituted imidazoles from aryl methyl ketones and benzylamines via N-heterocyclic carbene-catalysis. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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16
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Liu Q, Chen X, Li S, Rissanen K, Enders D. N‐Heterocyclic Carbene Catalyzed Asymmetric Synthesis of Pentacyclic Spirooxindoles via [3+3] Annulations of Isatin‐Derived Enals and Cyclic N‐Sulfonyl Ketimines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900065] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Qiang Liu
- Institute of Organic ChemistryRWTH Aachen University Aachen 52074 Germany
| | - Xiang‐Yu Chen
- Institute of Organic ChemistryRWTH Aachen University Aachen 52074 Germany
| | - Sun Li
- Institute of Organic ChemistryRWTH Aachen University Aachen 52074 Germany
| | - Kari Rissanen
- Department of ChemistryUniversity of Jyvaskyla, P. O. Box 35 40014 Jyväskylä Finland
| | - Dieter Enders
- Institute of Organic ChemistryRWTH Aachen University Aachen 52074 Germany
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17
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Gao Y, Liu D, Fu Z, Huang W. Facile Synthesis of 2,2-Diacyl Spirocyclohexanones via an N-Heterocyclic Carbene-Catalyzed Formal [3C + 3C] Annulation. Org Lett 2019; 21:926-930. [PMID: 30714381 DOI: 10.1021/acs.orglett.8b03892] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel strategy for the construction of 2,2-diacyl spirocyclohexanones 3 has been demonstrated on the basis of an NHC-catalyzed [3C + 3C] annulation of potassium 2-oxo-3-enoates with 2-ethylidene 1,3-indandiones. Furthermore, enantioenriched 3 was obtained in good to excellent yields with good enantioselectivities when chiral N-heterocyclic carbene (NHC) was employed. Notably, ring opening of the resulting 2,2-diacyl spirocyclohexanones 3 with hydrazine led to the formation of phthalazinones in good to excellent yields.
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Affiliation(s)
- Yaru Gao
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Dehai Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Zhenqian Fu
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Wei Huang
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
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18
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Liu Q, Chen XY, Puttreddy R, Rissanen K, Enders D. N-Heterocyclic Carbene Catalyzed Quadruple Domino Reactions: Asymmetric Synthesis of Cyclopenta[c]chromenones. Angew Chem Int Ed Engl 2018; 57:17100-17103. [PMID: 30394638 DOI: 10.1002/anie.201810402] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/18/2018] [Indexed: 11/07/2022]
Abstract
An N-heterocyclic carbene catalyzed domino sequence via α,β-unsaturated acyl azolium intermediates has been developed. This strategy provides a convenient enantioselective route to functionalized tricyclic coumarin derivatives and cyclopentanes. DFT studies and control experiments were performed to gain better insight into the reaction mechanism.
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Affiliation(s)
- Qiang Liu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Xiang-Yu Chen
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Rakesh Puttreddy
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Kari Rissanen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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19
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Liu Q, Chen X, Puttreddy R, Rissanen K, Enders D. N‐Heterocyclic Carbene Catalyzed Quadruple Domino Reactions: Asymmetric Synthesis of Cyclopenta[
c
]chromenones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qiang Liu
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Xiang‐Yu Chen
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Rakesh Puttreddy
- Department of Chemistry University of Jyväskylä P.O. Box 35 40014 Jyväskylä Finland
| | - Kari Rissanen
- Department of Chemistry University of Jyväskylä P.O. Box 35 40014 Jyväskylä Finland
| | - Dieter Enders
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
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Chen XY, Li S, Vetica F, Kumar M, Enders D. N-Heterocyclic-Carbene-Catalyzed Domino Reactions via Two or More Activation Modes. iScience 2018; 2:1-26. [PMID: 30428366 PMCID: PMC6135926 DOI: 10.1016/j.isci.2018.03.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/07/2018] [Accepted: 03/13/2018] [Indexed: 10/26/2022] Open
Abstract
Organocatalytic domino processes have become a rapidly growing area of research. N-heterocyclic carbenes (NHCs) have emerged as powerful organocatalysts for various transformations and continue to have widespread application. In the last decade, domino reactions catalyzed by NHCs have seen significant progress since the different activation modes could be successfully combined in one process. The most attractive features of these domino sequences include the readily available catalysts and substrates, the simple operational procedures, and the rapid assembly of complex molecular scaffolds with excellent levels of stereocontrol under mild reaction conditions. This review covers the advances in NHC-catalyzed domino reactions by focusing on the reaction scope, limitations, and mechanism with a close attention to the features of the reaction substrates.
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Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Sun Li
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Fabrizio Vetica
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Mukesh Kumar
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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21
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N-Heterocyclic Carbene-Catalyzed Double Michael Addition: Stereoselective Synthesis of Spirofluorenes and Multisubstituted Indanes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Meerakrishna RS, Athira M, Shanmugam P. Unusual [3+2] Spiroannulation and Creation of Stereogenic Quaternary Center at C‐3 of Oxindole via Addition of (Het)arynes to Isomerized Morita‐Baylis‐Hillman Adduct of Isatin. ChemistrySelect 2018. [DOI: 10.1002/slct.201702356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | - Mohanakumaran Athira
- Organic and Bio Organic Chemistry DivisionCSIR-Central Leather Research Institute (CLRI), Adyar Chennai- 600020 INDIA
| | - Ponnusamy Shanmugam
- Organic and Bio Organic Chemistry DivisionCSIR-Central Leather Research Institute (CLRI), Adyar Chennai- 600020 INDIA
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23
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Yang L, Lv Y, Wang F, Zhong G. Chiral NHC-catalyzed 1,3-dipolar [3 + 2] cycloaddition of azomethine imines with α-chloroaldehydes for the synthesis of bicyclic pyrazolidinones. Org Biomol Chem 2018; 16:4433-4438. [DOI: 10.1039/c8ob00925b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An NHC-catalyzed [3 + 2] cycloaddition reaction of azomethine imines and α-chloroaldehydes was developed for the synthesis of chiral bicyclic pyrazolidinone derivatives.
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Affiliation(s)
- Limin Yang
- College of Materials
- Chemistry & Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Yunbo Lv
- College of Materials
- Chemistry & Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Fei Wang
- College of Materials
- Chemistry & Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Guofu Zhong
- College of Materials
- Chemistry & Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
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Recent Advances in the Synthesis of Spiroheterocycles via N-Heterocyclic Carbene Organocatalysis. Molecules 2017; 22:molecules22111882. [PMID: 29117098 PMCID: PMC6150278 DOI: 10.3390/molecules22111882] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 10/30/2017] [Indexed: 12/01/2022] Open
Abstract
Spiroheterocycles are regarded as a privileged framework because of their wide distribution in various natural products and synthetic molecules and promising bioactivities. This review focuses on the recent advances in the synthesis of spiroheterocycles by using the strategy of N-heterocyclic carbene (NHC) organocatalysis, and is organized based on the stereoselectivity and the reactive intermediates. According to the stereochemistry, this review was divided into two main parts, covering racemic and enantioselective versions. In each part, we firstly describe the synthetic transformations using nucleophilic Breslow intermediates, and then discuss the reactions that employ electrophilic acylazolium or radical cation intermediates. With those distinct catalytic activation modes of NHC organocatlysis, we expect this synthetic protocol will possibly produce new molecules with structural novelty and complexity, which may warrant further research in the field of drug discovery.
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25
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Shao PL, Li ZR, Wang ZP, Zhou MH, Wu Q, Hu P, He Y. [3 + 2] Cycloaddition of Azaoxyallyl Cations with Cyclic Ketones: Access to Spiro-4-oxazolidinones. J Org Chem 2017; 82:10680-10686. [DOI: 10.1021/acs.joc.7b01728] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pan-Lin Shao
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
| | - Zi-Rui Li
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
| | - Zhi-Peng Wang
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
| | - Ming-Hui Zhou
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
| | - Qi Wu
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
| | - Ping Hu
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
| | - Yun He
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, PR China
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26
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Yang YJ, Ji Y, Qi L, Wang G, Hui XP. Asymmetric Synthesis of Cyclopenta[3,4]pyrroloindolones via N-Heterocyclic Carbene-Catalyzed Michael/Aldol/Lactamization Cascade Reaction. Org Lett 2017; 19:3271-3274. [DOI: 10.1021/acs.orglett.7b01411] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu-Jie Yang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yuanyuan Ji
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Liangliang Qi
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Guanjun Wang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xin-Ping Hui
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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