1
|
Dada R, Sulthan M, Yaragorla S. Calcium-Catalyzed Stereoselective Tandem [4+2] and [3+2] Annulation Reaction for the Synthesis of Dihydropyrrolo[1,2- a]quinolines. Org Lett 2019; 22:279-283. [PMID: 31854991 DOI: 10.1021/acs.orglett.9b04293] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Calcium-catalyzed highly facile one-pot, A4 annulation of aldehyde, amine, alkene, and alkyne to form fused 4,5-dihydropyrrolo[1,2-a]quinolines with exclusive syn diastereoselectivity is reported. This selectivity arises from an inverse electron demand [4+2] aza-Diels-Alder cycloaddition, and the adduct further undergoes a formal [3+2] cyclization with activated alkynes. This diversity-oriented protocol is highly general and furnishes the dihydropyrrolo[1,2-a]quinoline derivatives with a broad substrate scope in good to excellent yields.
Collapse
Affiliation(s)
- Ravikrishna Dada
- School of Chemistry , University of Hyderabad , P.O. Central University, Gachibowli, Hyderabad 500046 , India
| | - Mahesh Sulthan
- School of Chemistry , University of Hyderabad , P.O. Central University, Gachibowli, Hyderabad 500046 , India
| | - Srinivasarao Yaragorla
- School of Chemistry , University of Hyderabad , P.O. Central University, Gachibowli, Hyderabad 500046 , India
| |
Collapse
|
2
|
Liu B, Li X, Zhang J, Du L, Zeng R. Synthesis of novel spiro[cyclopropane-indolizine] derivatives via magnesium-mediated conjugate addition of bromoform. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/174751913x13814138618396] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Bin Liu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P.R. China
| | - Xiaofang Li
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P.R. China
| | - Jie Zhang
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P.R. China
| | - Liyun Du
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P.R. China
| | - Rongjin Zeng
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P.R. China
| |
Collapse
|
3
|
Rogalski S, Kubicki M, Pietraszuk C. Palladium catalysed regio- and stereoselective synthesis of (E)-4-aryl-1,3-bis(trimethylsilyl)but-3-en-1-ynes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
4
|
Liu R, Wang Q, Wei Y, Shi M. Synthesis of indolizine derivatives containing eight-membered rings via a gold-catalyzed two-fold hydroarylation of diynes. Chem Commun (Camb) 2018; 54:1225-1228. [DOI: 10.1039/c7cc09250d] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel strategy for a gold(i)-catalyzed synthesis of indolizine derivatives containing eight-membered rings has been developed, which may have potential usefulness as blue or green OLEDs.
Collapse
Affiliation(s)
- Ruixing Liu
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Qiang Wang
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| |
Collapse
|
5
|
Muragishi K, Asahara H, Nishiwaki N. Hydrohalogenation of Ethynylpyridines Involving Nucleophilic Attack of a Halide Ion. ACS OMEGA 2017; 2:1265-1272. [PMID: 31457502 PMCID: PMC6640932 DOI: 10.1021/acsomega.7b00133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/23/2017] [Indexed: 06/10/2023]
Abstract
Efficient hydrochlorination of 2-ethynylpyridines was achieved without the use of special reagents. Ethynylpyridine readily reacts with hydrochloric acid to form a pyridinium salt. The salt formation considerably enhances the electrophilicity of the ethynyl group and attracts a chloride ion as the counteranion. The spatial proximity facilitates the nucleophilic addition of the halide anion to the ethynyl group, producing 2-(2-chloroethenyl)pyridine in high yields. This protocol could also be applied for hydrobromination and hydroiodination using hydrobromic and hydroiodic acids, respectively. In the case of acetic acid, the reaction did not proceed because of the low acidity and lack of salt formation. This problem was overcome by exchanging the counteranion using silver acetate; the resultant pyridinium acetate underwent hydroacetoxylation.
Collapse
Affiliation(s)
- Kengo Muragishi
- School
of Environmental Science and Engineering and Research Center for Material Science
and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Haruyasu Asahara
- School
of Environmental Science and Engineering and Research Center for Material Science
and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School
of Environmental Science and Engineering and Research Center for Material Science
and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| |
Collapse
|
6
|
Gao T, Chen X, Jiang L, Wu M, Guo H, Wang J, Sun S, Oiler J, Xing Y. General and Direct Synthesis of Indolizine-1-carbaldehydes by 1,3-Dipolar Cycloaddition of Phenylpropiolaldehyde with Pyridinium Ylides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600945] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Tao Gao
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Xiuling Chen
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Longqiang Jiang
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Minghu Wu
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Haibing Guo
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Jian Wang
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Shaofa Sun
- Non-power Nuclear Technology Collaborative Innovation Center; School of Nuclear Technology and Chemistry & Life Science; Hubei University of Science and Technology; 437100 Xianning China
| | - Jeremy Oiler
- Department of Chemistry; William Paterson University of New Jersey; 300 Pompton Road 07470 Wayne NJ USA
| | - Yalan Xing
- Department of Chemistry; William Paterson University of New Jersey; 300 Pompton Road 07470 Wayne NJ USA
| |
Collapse
|
7
|
Rh(III)-catalyzed double molecular alkyne imine C–H activation: a facile and efficient synthesis of functionalized acridine compounds. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
8
|
Li X, Xie X, Liu Y. Gold(I)-Catalyzed Cascade Hydroarylation/Cycloaromatization to Indolizines via Pyridine Ring Construction. J Org Chem 2016; 81:3688-99. [DOI: 10.1021/acs.joc.6b00346] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiangdong Li
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Xin Xie
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| |
Collapse
|
9
|
Investigation of the Pyridinium Ylide--Alkyne Cycloaddition as a Fluorogenic Coupling Reaction. Molecules 2016; 21:332. [PMID: 26978335 PMCID: PMC6273055 DOI: 10.3390/molecules21030332] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 11/17/2022] Open
Abstract
The cycloaddition of pyridinium ylides with alkynes was investigated under mild conditions. A series of 13 pyridinium salts was prepared by alkylation of 4-substituted pyridines. Their reactivity with propiolic ester or amide in various reaction conditions (different temperatures, solvents, added bases) was studied, and 11 indolizines, with three points of structural variation, were, thus, isolated and characterized. The highest yields were obtained when electron-withdrawing groups were present on both the pyridinium ylide, generated in situ from the corresponding pyridinium salt, and the alkyne (X, Z = ester, amide, CN, carbonyl, etc.). Electron-withdrawing substituents, lowering the acid dissociation constant (pKa) of the pyridinium salts, allow the cycloaddition to proceed at pH 7.5 in aqueous buffers at room temperature.
Collapse
|
10
|
Liu RR, Hong JJ, Lu CJ, Xu M, Gao JR, Jia YX. Indolizine Synthesis via Oxidative Cross-Coupling/Cyclization of Alkenes and 2-(Pyridin-2-yl)acetate Derivatives. Org Lett 2015; 17:3050-3. [DOI: 10.1021/acs.orglett.5b01334] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ren-Rong Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jian-Jun Hong
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Chuan-Jun Lu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Meng Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jian-Rong Gao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yi-Xia Jia
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| |
Collapse
|
11
|
Liu RR, Lu CJ, Zhang MD, Gao JR, Jia YX. Palladium-Catalyzed Three-Component Cascade Reaction: Facial Access to Densely Functionalized Indolizines. Chemistry 2015; 21:7057-60. [DOI: 10.1002/chem.201500569] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Indexed: 11/10/2022]
|
12
|
Huang Y, Ding J, Wu C, Zheng H, Weng Z. Synthesis of Vinyl Trifluoromethyl Thioethers via Copper-Mediated Trifluoromethylthiolation of Vinyl Bromides. J Org Chem 2015; 80:2912-7. [DOI: 10.1021/acs.joc.5b00144] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yangjie Huang
- Department
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
| | - Jianping Ding
- Department
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
| | - Chuyi Wu
- Department
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
| | - Huidong Zheng
- Department
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
| | - Zhiqiang Weng
- Department
of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| |
Collapse
|
13
|
Zhang L, Li X, Liu Y, Zhang D. Palladium-catalyzed highly efficient synthesis of functionalized indolizines via cross-coupling/cycloisomerization cascade. Chem Commun (Camb) 2015; 51:6633-6. [DOI: 10.1039/c5cc01151e] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Pd-catalyzed cross-coupling/cycloisomerization of 3-(2-pyridyl) propargyl carbonates with organoboronic acids provides a straightforward route for the synthesis of 1,3-disubstituted indolizines.
Collapse
Affiliation(s)
- Liangwei Zhang
- Center of Drug Discovery
- College of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Xiangdong Li
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Dayong Zhang
- Center of Drug Discovery
- College of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
- China
| |
Collapse
|
14
|
Liu RR, Cai ZY, Lu CJ, Ye SC, Xiang B, Gao J, Jia YX. Indolizine synthesis via Cu-catalyzed cyclization of 2-(2-enynyl)pyridines with nucleophiles. Org Chem Front 2015. [DOI: 10.1039/c4qo00336e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu-catalyzed cyclization of 2-(2-enynyl)pyridines with various nucleophiles was developed, providing efficient access to indolizine derivatives.
Collapse
Affiliation(s)
- Ren-Rong Liu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Zheng-Yi Cai
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Chuan-Jun Lu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Shi-Chun Ye
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Bin Xiang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Jianrong Gao
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Yi-Xia Jia
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| |
Collapse
|
15
|
Jung Y, Kim I. C3 functionalization of indolizines via In(iii)-catalyzed three-component reaction. Org Biomol Chem 2015; 13:10986-94. [DOI: 10.1039/c5ob01657f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Post-functionalization at the C3 position of indolizines via In(iii)-catalyzed three-component coupling reaction with amines and aldehydes allowed rapid access to a new class of indolizines with diverse functional groups at the C3 position in good to excellent yields.
Collapse
Affiliation(s)
- Youngeun Jung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon 406-840
- Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon 406-840
- Republic of Korea
| |
Collapse
|
16
|
Tan XC, Liang Y, Bao FP, Wang HS, Pan YM. Silver-mediated C–H bond functionalization: one-pot to construct substituted indolizines from 2-alkylazaarenes with alkynes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.085] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Kucukdisli M, Opatz T. Two-Step Synthesis of 2-Aminoindolizines from 2-Alkylpyridines. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402618] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
18
|
Martens SC, Hahn L, Lombeck F, Rybina A, Wadepohl H, Gade LH. Annulated Heterocyclic Derivatives of 1,3,6,8-Tetraazapyrene. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300662] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
19
|
Chung LH, Wong CY. Isolation of Ruthenium–Indolizine Complexes: Insight into the Metal-Induced Cycloisomerization of Propargylic Pyridines. Organometallics 2013. [DOI: 10.1021/om400550w] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Lai-Hon Chung
- Department of Biology
and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, People’s Republic
of China
| | - Chun-Yuen Wong
- Department of Biology
and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, People’s Republic
of China
| |
Collapse
|
20
|
Kucukdisli M, Opatz T. One-Pot Synthesis of Polysubstituted Indolizines by an Addition/Cycloaromatization Sequence. J Org Chem 2013; 78:6670-6. [DOI: 10.1021/jo400992n] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Murat Kucukdisli
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10−14, D-55128 Mainz, Germany
| | - Till Opatz
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10−14, D-55128 Mainz, Germany
| |
Collapse
|
21
|
Cai Q, Zhu YP, Gao Y, Sun JJ, Wu AX. A direct method for the synthesis of indolizine derivatives from easily available aromatic ketones, pyridines, and acrylonitrile derivatives. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0534] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A concise and efficient strategy has been proposed to synthesize indolizine derivatives from easily available aryl or heteroaryl methyl ketones, pyridines, and acrylonitriles. The mechanistic pathway involved the integration of iodination, pyridinium ylide synthesis, and 1,3-dipolar cycloaddition. The protocols were found to be highly efficient in terms of high yields, operational simplicity, mild reaction conditions, and easy workup. This method has provided an important supplement for the synthesis of indolizine derivatives via a novel tandem synthesis.
Collapse
Affiliation(s)
- Qun Cai
- The Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Yan-Ping Zhu
- The Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Yang Gao
- The Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Jing-Jing Sun
- The Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - An-Xin Wu
- The Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| |
Collapse
|
22
|
Wang D, Wei Y, Shi M. Synthesis of Highly Functionalized Aminoindolizines by Titanium(IV) Chloride Mediated Cycloisomerization and Phosphine-Catalyzed Aza-Michael Addition Reactions. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300062] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
23
|
Li Y, Yang B, Sun Y, Wang H, Li H, Fang S, Niu X, Ma C. A metal-free tandem cycloaddition strategy for the synthesis of indolizines from pyridine derivatives and γ-bromo-crotonates under mild conditions. RSC Adv 2013. [DOI: 10.1039/c3ra43613f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
|
24
|
Yang Y, Gao M, Zhang DX, Wu LM, Shu WM, Wu AX. Convergent domino synthesis of 1,2,3-triaroylindolizines from methyl ketones and pyridines via self-division of labor strategy. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.091] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
25
|
|
26
|
|
27
|
Kethe A, Li A, Klumpp DA. Ring closing and opening reactions leading to aza-polycyclic aromatic compounds. Tetrahedron 2012; 68:3357-3360. [PMID: 24143035 DOI: 10.1016/j.tet.2012.02.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of functionalized aza-polycyclic aromatic compounds were prepared by a superacid-promoted ring closing and opening reaction cascade. A reaction mechanism is proposed, which involves reactive dicationic intermediates. A key step in the conversions involves ipso protonation of an aryl group and elimination of an alkyl phenyl group.
Collapse
Affiliation(s)
- Anila Kethe
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, United States
| | | | | |
Collapse
|
28
|
Singh GS, Mmatli EE. Recent progress in synthesis and bioactivity studies of indolizines. Eur J Med Chem 2011; 46:5237-57. [DOI: 10.1016/j.ejmech.2011.08.042] [Citation(s) in RCA: 199] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/25/2011] [Accepted: 08/26/2011] [Indexed: 10/17/2022]
|
29
|
Ganto MM, Lee YC, Kaye PT. Applications of Thermal and Microwave-Assisted Cyclization in the Synthesis of Baylis–Hillman-Derived Heteropolycyclic Systems. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.492075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mlungiseleli M. Ganto
- a Department of Chemistry and Centre for Chemico- and Biomedicinal Research , Rhodes University , Grahamstown , South Africa
| | - Yi-Chen Lee
- a Department of Chemistry and Centre for Chemico- and Biomedicinal Research , Rhodes University , Grahamstown , South Africa
| | - Perry T. Kaye
- a Department of Chemistry and Centre for Chemico- and Biomedicinal Research , Rhodes University , Grahamstown , South Africa
| |
Collapse
|
30
|
Gogoi S, Dutta M, Gogoi J, Boruah RC. Microwave promoted synthesis of cycl[3.2.2]azines in water via a new three-component reaction. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.12.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
31
|
Barluenga J, Lonzi G, Riesgo L, López LA, Tomás M. Pyridine Activation via Copper(I)-Catalyzed Annulation toward Indolizines. J Am Chem Soc 2010; 132:13200-2. [DOI: 10.1021/ja106751t] [Citation(s) in RCA: 176] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
32
|
Tukulula M, Klein R, Kaye PT. Indolizine Studies, Part 5: Indolizine-2-carboxamides as Potential HIV-1 Protease Inhibitors[1]. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903219450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
33
|
Fu WF, Jia LF, Mu WH, Gan X, Zhang JB, Liu PH, Cao QY, Zhang GJ, Quan L, Lv XJ, Xu QQ. Synthesis, Characterization, Photoinduced Isomerization, and Spectroscopic Properties of Vinyl-1,8-naphthyridine Derivatives and Their Copper(I) Complexes. Inorg Chem 2010; 49:4524-33. [PMID: 20408579 DOI: 10.1021/ic100094y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wen-Fu Fu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking 100190, China
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Lin-Fang Jia
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking 100190, China
| | - Wei-Hua Mu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Xin Gan
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Jia-Bing Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Ping-Hua Liu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Qian-Yong Cao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking 100190, China
| | - Gui-Ju Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking 100190, China
| | - Li Quan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking 100190, China
| | - Xiao-Jun Lv
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, HKU-CAS Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking 100190, China
| | - Quan-Qing Xu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| |
Collapse
|
34
|
Kim K, Kim I. Diversity-Oriented Construction of Highly Substituted Indolizinones. ACTA ACUST UNITED AC 2010; 12:379-82. [DOI: 10.1021/cc100015k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Kyungsun Kim
- Medicinal Chemistry Research Center, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| | - Ikyon Kim
- Medicinal Chemistry Research Center, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| |
Collapse
|
35
|
Liu Y, Zhang Y, Shen YM, Hu HW, Xu JH. Regioselective synthesis of 3-acylindolizines and benzo- analogues via 1,3-dipolar cycloadditions of N-ylides with maleic anhydride. Org Biomol Chem 2010; 8:2449-56. [PMID: 20448905 DOI: 10.1039/c000277a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3-Acylindolizines (5a-5f) and their benzo- analogues 1-acylpyrrolo[1,2-a]quinolines (6a-6f) and 1-acylpyrrolo[2,1-a]isoquinolines (7a-7i) are regioselectively synthesized by a convenient one pot reaction of the corresponding pyridinium (quinolinium, isoquinolinium) ylide with maleic anhydride (MA) in the presence of the mild oxidant tetrakispyridinecobalt(ii) dichromate (TPCD). These reactions proceed via a tandem reaction sequence of 1,3-dipolar cycloaddition of azomethine ylide with MA, anhydride hydrolysis and oxidative bisdecarboxylation of the primary cycloadducts followed by dehydrogenative aromatization of the dihydroindolizines. TPCD serves as both decarboxylation and dehydrogenation reagent in the reactions. These results show that TPCD is a promising new reagent for bisdecarboxylation of aliphatic carboxylates.
Collapse
Affiliation(s)
- Yun Liu
- Institute of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, PR China
| | | | | | | | | |
Collapse
|
36
|
Kim H, Lee K, Kim S, Lee PH. An efficient preparation of indolizines through a tandem palladium-catalyzed cross-coupling reaction and cycloisomerization. Chem Commun (Camb) 2010; 46:6341-3. [DOI: 10.1039/c0cc01945c] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
37
|
Lahoz IR, Sicre C, Navarro-Vázquez A, López CS, Cid MM. Mechanistic Investigation on the Formation of Indolizines from 2-Enynylpyridines. Org Lett 2009; 11:4802-5. [DOI: 10.1021/ol901760a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Inma R. Lahoz
- Departamento de Química Orgánica, Facultade de Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Cristina Sicre
- Departamento de Química Orgánica, Facultade de Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Armando Navarro-Vázquez
- Departamento de Química Orgánica, Facultade de Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Carlos Silva López
- Departamento de Química Orgánica, Facultade de Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - María-Magdalena Cid
- Departamento de Química Orgánica, Facultade de Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| |
Collapse
|
38
|
Kapur A, Kumar K, Singh L, Singh P, Elango M, Subramanian V, Gupta V, Kanwal P, Ishar MPS. Domino routes to substituted benzoindolizines: tandem reorganization of 1,3-dipolar cycloadducts of nitrones with allenic esters/ketones and alternative cycloaddition–palladium catalyzed cyclization pathway. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.076] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
39
|
Seregin IV, Schammel AW, Gevorgyan V. Multisubstituted N-fused heterocycles via transition metal-catalyzed cycloisomerization protocols. Tetrahedron 2008; 64:6876-6883. [PMID: 19606205 PMCID: PMC2598400 DOI: 10.1016/j.tet.2008.04.023] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Two complementary protocols for assembly of multisubstituted N-fused heterocycles have been developed. It was demonstrated that 1,3-disubstituted N-fused heterocycles, including indolizines, pyrroloquinoxalines, and pyrrolothiazoles can easily be synthesized via an exceptionally mild and efficient method involving a novel silver-catalyzed cycloizomerization of propargyl-containing heterocycles. Alternatively, 1,2-disubstituted heterocycles can be accessed through the novel cascade transformation involving an alkyne-vinylidene isomerization with concomitant 1,2-shift of hydrogen, silyl, stannyl, or germyl groups. This mild and simple method allows for selective and highly efficient synthesis of indolizines, pyrroloisoquinolines, pyrroloquinoxalines, pyrrolopyrazines, and pyrrolothiazoles.
Collapse
Affiliation(s)
- Ilya V. Seregin
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607-7061
| | - Alex W. Schammel
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607-7061
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607-7061
| |
Collapse
|
40
|
Bunnelle EM, Smith CR, Lee SK, Singaram SW, Rhodes AJ, Sarpong R. Pt-catalyzed cyclization/migration of propargylic alcohols for the synthesis of 3(2H)-furanones, pyrrolones, indolizines, and indolizinones. Tetrahedron 2008; 64:7008-7014. [PMID: 22593605 PMCID: PMC3351138 DOI: 10.1016/j.tet.2008.02.103] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Several heterocycles such as furanones, pyrrolones, and indolizines, which are of pharmacological importance, are easily accessed via the Pt(II)-catalyzed heterocyclization/1,2-migration of propargylic ketols or hydroxy imine derivatives. This method sidesteps the challenges of traditional heteroaromatic oxygenation strategies such as regioselectivity and functional group tolerance in the syntheses of these heterocycles.
Collapse
Affiliation(s)
- Eric M. Bunnelle
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Cameron R. Smith
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Sharon K. Lee
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | | | - Allison J. Rhodes
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| |
Collapse
|
41
|
Kim I, Kim SG, Kim JY, Lee GH. A novel approach to 3-acylated indolizine structures via iodine-mediated hydrative cyclization. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.101] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
42
|
A novel and efficient approach to highly substituted indolizines via 5-endo-trig iodocyclization. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.10.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
43
|
Expeditious synthesis of indolizine derivatives via iodine mediated 5-endo-dig cyclization. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.180] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
44
|
Yan B, Zhou Y, Zhang H, Chen J, Liu Y. Highly Efficient Synthesis of Functionalized Indolizines and Indolizinones by Copper-Catalyzed Cycloisomerizations of Propargylic Pyridines. J Org Chem 2007; 72:7783-6. [PMID: 17718578 DOI: 10.1021/jo070983j] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The copper-catalyzed cycloisomerizations of 2-pyridyl-substituted propargylic acetates and its derivatives are described, which offer an efficient route to C-1 oxygenated indolizines with a wide range of substituents under mild reaction conditions. The presented method could be readily applied to the synthesis of indolizinones through a cyclization/1,2-migration of tertiary propargylic alcohols.
Collapse
Affiliation(s)
- Bin Yan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, People's Republic of China
| | | | | | | | | |
Collapse
|
45
|
Seregin IV, Schammel AW, Gevorgyan V. Base- and ligand-free room-temperature synthesis of N-fused heteroaromatic compounds via the transition metal-catalyzed cycloisomerization protocol. Org Lett 2007; 9:3433-6. [PMID: 17637023 PMCID: PMC2525811 DOI: 10.1021/ol701464j] [Citation(s) in RCA: 136] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new practical method for the synthesis of N-fused heterocycles via the transition metal-catalyzed cycloisomerization of heterocyles possessing a propagyl group has been developed. This very mild, base- and ligand-free method allows for the synthesis of diverse fused heterocyclic cores in good to excellent yields.
Collapse
Affiliation(s)
- Ilya V Seregin
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA
| | | | | |
Collapse
|
46
|
Application of DMF–methyl sulfate adduct in the regioselective synthesis of 3-acylated indolizines. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.095] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Smith CR, Bunnelle EM, Rhodes AJ, Sarpong R. Pt-catalyzed cyclization/1,2-migration for the synthesis of indolizines, pyrrolones, and indolizinones. Org Lett 2007; 9:1169-71. [PMID: 17309277 PMCID: PMC3384527 DOI: 10.1021/ol0701971] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Indolizine, pyrrolone, and indolizinone heterocycles are easily accessed via the Pt(II)-catalyzed cycloisomerization or a tandem cyclization/1,2-migration of pyridine propargylic alcohols and derivatives. This method provides an efficient synthesis of highly functionalized heterocycles from readily available substrates. [reaction: see text]
Collapse
Affiliation(s)
- Cameron R. Smith
- Department of Chemistry, University of California, Berkeley, California 94720
| | - Eric M. Bunnelle
- Department of Chemistry, University of California, Berkeley, California 94720
| | - Allison J. Rhodes
- Department of Chemistry, University of California, Berkeley, California 94720
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720
| |
Collapse
|
48
|
Liu Y, Song Z, Yan B. General and Direct Synthesis of 3-Aminoindolizines and Their Analogues via Pd/Cu-Catalyzed Sequential Cross-Coupling/Cycloisomerization Reactions. Org Lett 2007; 9:409-12. [PMID: 17249774 DOI: 10.1021/ol062766v] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] An efficient and one-step synthesis of 3-aminoindolizines or benz[e]indolizines from the reactions of propargyl amines or amides with heteroaryl bromides was developed. This methodology is realized by a tandem reaction using Pd/Cu catalysts, which could catalyze coupling and cycloisomerization reactions in the same vessel.
Collapse
Affiliation(s)
- Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, People's Republic of China.
| | | | | |
Collapse
|
49
|
Xia Z, Przewloka T, Koya K, Ono M, Chen S, Sun L. Controlling chemoselectivity—application of DMF di-t-butyl acetal in the regioselective synthesis of 3-monosubstituted indolizines. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.10.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
50
|
Morra N, Morales C, Bajtos B, Wang X, Jang H, Wang J, Yu M, Pagenkopf B. Synthesis of Indolizines and Benzoindolizines by Annulation of Donor-Acceptor Cyclopropanes with Electron-Deficient Pyridines and Quinolines. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200600298] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|