1
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Chauhan S, Swamy KCK. Phosphine vs DBU-Catalyzed Annulation Reactions of β'-Acetoxy Allenoates with Acyl-Tethered Benzothiazole Bisnucleophiles: (4 + 3) or (4 + 1) vs (3 + 3) Annulation. J Org Chem 2024. [PMID: 39007762 DOI: 10.1021/acs.joc.4c01085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Dearomative annulation reaction of acyl-tethered benzothiazole bisnucleophiles with β'-acetoxy allenoates by switching the Lewis base is developed. The DBU-catalyzed reaction gives benzothiazole-fused 1,4-dihydropyridine carboxylates by (3 + 3) annulation chemoselectively. By contrast, the PR3-catalyzed reaction gives benzothiazole-fused azepines by (4 + 3) annulation and cyclopentene carboxylates by (4 + 1) annulation; the ratio of the latter two products depends on the solvent. A possible rationale for the difference in the reactivity, based on the 1,4/1,5-addition of the 2-acyl-tethered benzothiazole to the key phosphonium intermediate, is provided.
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Affiliation(s)
- Sachin Chauhan
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
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2
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Chauhan S, Kumar AS, Swamy KCK. δ-Acetoxy Allenoate as a 5C-Synthon in Domino-Annulation with Sulfamidate Imines: Ready Access to Coumarins. J Org Chem 2023; 88:12432-12444. [PMID: 37602894 DOI: 10.1021/acs.joc.3c01183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
A DMAP-catalyzed sequential benzannulation and lactonization strategy in which δ-acetoxy allenoate functions as a 5C-synthon in its reaction with cyclic sulfamidate imines is reported. This platform delivers π-extended coumarin frameworks under metal-free conditions via allylic elimination followed by Mannich coupling, proton shifts, C-N bond cleavage, and lactonization as key steps. The driving force for this domino reaction is the formation of the diene-ammonium intermediate and O-S bond cleavage. ESI-HRMS has been useful in gaining insights into the reaction pathway.
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Affiliation(s)
- Sachin Chauhan
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - A Sanjeeva Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
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3
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Khan SA, Kumar AS, Swamy KCK. DBU-Catalyzed Ring Expansion or Ene-amine Formation Involving δ-Acetoxy Allenoates and N-Sulfonyl Hydrazides. Org Lett 2023; 25:3713-3717. [PMID: 37184439 DOI: 10.1021/acs.orglett.3c01166] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
DBU-catalyzed spiro-annulation and concomitant ring expansion/domino reaction of δ-acetoxy allenoates with cycl-2-ene-N-sulfonyl hydrazides afford ring-expanded (5 → 6, 6 → 7, and 7 → 8) products. By contrast, cycl-3-ene/ane-N-sulfonyl hydrazones under similar conditions deliver pyrazole cores with the same allenoate that involves allylic elimination in which δ-acetoxy allenoate serves as 3C-synthon. The key spirocyclic intermediates, as well as dienyl-amine intermediates, are isolated and characterized. An extension to (R)-(-)-carvone-derived sulfonyl hydrazide also led to ring expansion and gave pyrazoloazepine.
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Affiliation(s)
- Shabbir Ahmed Khan
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - A Sanjeeva Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
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4
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Jain S, Kumawat J, Jain P, Shruti, Malik P, Dwivedi J, Kishore D. Metal-catalyzed synthesis of triazine derivatives. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02948-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Song M, Zhao J, Li EQ. Recent advances in tertiary amine Lewis base-promoted cycloadditions of allenoates. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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6
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Mahesha CK, Naharwal S, Kharat ND, Mandal SK, Sakhuja R. Regiodivergent Synthesis of Cinnoline-Fused Indazolones through Pd-Catalyzed Annulation of 1-Arylindazolones with Allenoates. J Org Chem 2022; 87:3701-3706. [DOI: 10.1021/acs.joc.1c02629] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - Sushma Naharwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India
| | - Narendra Dinkar Kharat
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India
| | - Sanjay K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manuali P.O., Mohali, Punjab 140306, India
| | - Rajeev Sakhuja
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India
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7
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Khan SA, Kumar AS, Swamy KCK. Pyridine vs DABCO vs TBAB in Annulations of δ-Acetoxy Allenoates with Thioamides Leading to Dihydrothiophene, Thiopyran, and Thiazole Scaffolds. J Org Chem 2022; 87:1285-1301. [PMID: 34979805 DOI: 10.1021/acs.joc.1c02602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The same δ-acetoxy allenoates and thioamides, under DABCO, pyridine, or tetra-n-butyl ammonium bromide (TBAB) catalysis, undergo distinctly different annulations giving chemoselective routes to dihydrothiophene, thiopyran, or thiazole motifs. Thus, using pyridine in [3 + 2] annulation, dihydrothiophenes are obtained as essentially single diastereomers. By contrast, under DABCO catalysis, allenoates deliver thiopyran motifs in good to high yields through 6-exo-dig cyclization. In the thiazole forming [3 + 2] annulation, tetra-n-butyl ammonium bromide (TBAB) facilitates addition-elimination and 5-exo-trig cyclization in which β- and γ-carbons of allenoates participate to deliver thiazole cores exclusively with a Z-isomeric exocyclic double bond. A possible rationale for these observations is delved into.
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Affiliation(s)
- Shabbir Ahmed Khan
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - A Sanjeeva Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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8
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Soares MIL, Gomes CSB, Oliveira MC, Marçalo J, Pinho E Melo TMVD. Synthesis of 5 H-chromeno[3,4- b]pyridines via DABCO-catalyzed [3 + 3] annulation of 3-nitro-2 H-chromenes and allenoates. Org Biomol Chem 2021; 19:9711-9722. [PMID: 34726223 DOI: 10.1039/d1ob01130h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The DABCO-catalyzed [3 + 3] annulation between 3-nitro-2H-chromenes and benzyl 2,3-butadienoate has been developed as a route to 5H-chromeno[3,4-b]pyridine derivatives. Under optimal reaction conditions, 5H-chromeno[3,4-b]pyridines incorporating two allenoate units were obtained in moderate to good yields (30-76%). The same type of transformation could be carried out using butynoates as allene surrogates. Mechanistic studies by mass spectrometry allowed the identification of the key intermediates involved in the reaction mechanism. The reported synthetic methodology represents an entirely new approach for the synthesis of the 5H-chromeno[3,4-b]pyridine core structure based on allene chemistry.
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Affiliation(s)
- Maria I L Soares
- University of Coimbra, Coimbra Chemistry Centre (CQC) and Department of Chemistry, 3004-535 Coimbra, Portugal.
| | - Clara S B Gomes
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal.,UCIBIO, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - M Conceição Oliveira
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Joaquim Marçalo
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Teresa M V D Pinho E Melo
- University of Coimbra, Coimbra Chemistry Centre (CQC) and Department of Chemistry, 3004-535 Coimbra, Portugal.
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9
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Debnath S, Kumar AS, Chauhan S, Kumara Swamy KC. Divergent Reactivity of δ- and β'-Acetoxy Allenoates with 2-Sulfonamidoindoles via Phosphine Catalysis: Entry to Dihydro-α-carboline, α-Carboline, and Spiro-cyclopentene Motifs. J Org Chem 2021; 86:11583-11598. [PMID: 34343010 DOI: 10.1021/acs.joc.1c01137] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The reactivity of 2-sulfonamidoindoles with acetoxy allenoates under phosphine catalysis depends on the disposition of the acetoxy (OAc) group on the allenoate. In the temperature-controlled [3 + 3] annulations, δ-acetoxy allenoates afforded dihydrocarboline and carboline scaffolds with carbon-nitrogen nucleophilic 2-sulfonamidoindoles, in which allenoate serves as a β-, γ-, and δ-carbon donor. At room temperature (25 °C), dihydro-α-carboline motifs were obtained exclusively through Michael addition, 1,4-proton shift, isomerization, 1,2-proton transfer, phosphine elimination, and aza-Michael addition. The higher temperature (80 °C) cascade protocol using Ph3P-Cs2CO3 combination involves addition-elimination, aza-Claisen rearrangement, tosyl migration, and aromatization as key steps to give α-carbolines containing tosyl functionality at the γ-carbon. In contrast, with β'-acetoxy allenoate, 2-sulfonamidoindole acts only as a carbo-nucleophile in (p-tolyl)3P-directed [4 + 1] spiro-annulation, leading to five-membered spiro-carbocyclic motifs essentially as single diastereomers (dr >20:1) via chemoselective carbo-annulation.
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Affiliation(s)
- Shubham Debnath
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - A Sanjeeva Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - Sachin Chauhan
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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10
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Zhu S, Li H, Fu R, Hao W, Wang S, Tu S, Jiang B. Regio‐ and Stereoselective Synthesis of Rotationally Hindered C
12
‐Naphthylated Tribenzo[
a,c,j
]xanthenes through Catalytic Tricyclization of Yne‐Allenones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Shan‐Shan Zhu
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
| | - Heng Li
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
| | - Rong Fu
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
| | - Wen‐Juan Hao
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
| | - Shu‐Liang Wang
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
| | - Shu‐Jiang Tu
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
| | - Bo Jiang
- School of Chemistry and Material Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University Xuzhou 211116 People's Republic of China
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11
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Yang T, Wang C, Li S, Zhang M, Wei D, Lan Y. Possible Mechanisms and Origin of Selectivities for Phosphine‐Catalyzed [2+n] (n=3, 4) Annulations of Saturated Amines and δ‐Acetoxy Allenoates. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000679] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Ting‐Ting Yang
- Green Catalysis Center, and College of Chemistry Zhengzhou University 100 Science Avenue Zhengzhou 450001, Henan P. R. China
| | - Congcong Wang
- School of Pharmaceutical Sciences Zhengzhou University Zhengzhou 450001 P. R. China
| | - Shi‐Jun Li
- Green Catalysis Center, and College of Chemistry Zhengzhou University 100 Science Avenue Zhengzhou 450001, Henan P. R. China
| | - Min Zhang
- Green Catalysis Center, and College of Chemistry Zhengzhou University 100 Science Avenue Zhengzhou 450001, Henan P. R. China
| | - Donghui Wei
- Green Catalysis Center, and College of Chemistry Zhengzhou University 100 Science Avenue Zhengzhou 450001, Henan P. R. China
| | - Yu Lan
- Green Catalysis Center, and College of Chemistry Zhengzhou University 100 Science Avenue Zhengzhou 450001, Henan P. R. China
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12
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Kumar AS, Chauhan S, Swamy KCK. Contrasting Carboannulation Involving δ-Acetoxy Allenoate as a Four-Carbon Synthon Using DABCO and DMAP: Access to Spiro-carbocyclic and m-Teraryl Scaffolds. Org Lett 2021; 23:1123-1129. [PMID: 33480700 DOI: 10.1021/acs.orglett.1c00076] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Spiro-annulation involving δ-acetoxy allenoate and alkyl benzoisothiazole dioxide (N-sulfonyl ketimine) triggered by DABCO/MeCO2H combination leads to an essentially single diastereomer via chemo- and regiospecific [4 + 2]-carboannulation and a new hydroxyl group is introduced. In contrast, DMAP-catalyzed benzannulation using the same reactants affords unsymmetrical m-teraryls via Mannich coupling, sequential proton transfers, and C-N bond cleavage. Here, δ-acetoxy allenoate serves as a 4C-synthon and the carboannulation is completely base dependent and mutually exclusive.
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Affiliation(s)
- A Sanjeeva Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - Sachin Chauhan
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - K C Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India
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13
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Abstract
:
The benzofuranyl motif present in compounds exhibits various medicinal properties and
non-drug applications. These derivatives are naturally occurring compounds or synthetic materials,
which cover a broad spectrum of pharmacological activities like anti-inflammatory, anti-diabetic, anti-
depressant, anti-HIV, anti-microbial, anti-proliferative, anti-convulsant, cytotoxic, analgesic, etc.
Few of the commercially interesting compounds from this class are, ailanthoidol (anti-inflammatory),
amiodarone, dronedarone, celivarone (anti-arrhythmic), bufuralol (muscular airways relaxant), morphine,
5-(2-aminopropyl)benzofuran; 5-APB, 6-(2-aminopropyl)benzofuran; 6-APB (CNS), rifampicin
(antibiotic), etc., whereas, some of the non-drug applications are in perfumery industry (bergapten)
and as tannin activators in sunscreen preparations (psoralen, 8-methoxypsoralen, and angelicin).
Considering these interesting biological activities and commercial utilities, a review on the synthetic
aspects of this privileged scaffold was attempted. For the benefit of natural product-based drug discovery,
available sources of these derivatives, extraction process and reported biological activities
have also been outlined in this review.
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Affiliation(s)
- Andiappan Lavanya
- Department of Training and Development, Orchid Pharma Ltd., 138-149, SIDCO Industrial Estate, Alathur, Chennai- 603 110, Tamil Nadu, India
| | - Kilambi Narasimhan
- Department of Training and Development, Orchid Pharma Ltd., 138-149, SIDCO Industrial Estate, Alathur, Chennai- 603 110, Tamil Nadu, India
| | - Vediappen Padmini
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
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14
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Arupula SK, Qureshi AA, Swamy KCK. Lewis Base-Switched [3 + 3] and [4 + 2] Annulation Reactions of δ-Acetoxy Allenoates with Cyclic N-Sulfonyl Imines: Divergent Synthesis of Functionalized α-Pyridyl Acetates and Teraryl Scaffolds. J Org Chem 2020; 85:4130-4144. [DOI: 10.1021/acs.joc.9b03281] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sanjeeva K. Arupula
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - Asif Ali Qureshi
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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15
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Wang T, Liu Y, Xu J. Expansion of annulation of allenoates with trifluoroketones: Synthesis of trifluoromethylated dihydropyrans. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2017.1402348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Tong Wang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, P.R. China
- Center for Drug Evaluation, China Food and Drug Administration, Beijing, P.R. China
| | - Yanpeng Liu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, P.R. China
- Department of Chemistry, City University of Hong Kong, Hong Kong, Hong Kong SAR, P.R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, P.R. China
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16
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Abstract
The 1,3-dipolar cycloaddition reaction is a powerful and versatile strategy for
the synthesis of carbocyclic and heterocyclic five-membered rings. Herein, the most recent
developments on the [3+2] cycloaddition reactions using allenes acting either as dipolarophiles
or 1,3-dipole precursors, are highlighted. The recent contributions on the
phosphine- and transition metal-catalyzed [3+2] annulations involving allenes as substrates
are also covered, with the exception of those in which the formation of a 1,3-dipole
(or synthetic equivalent) is not invoked.
This review summarizes the most relevant research in which allenes are used as building
blocks for the construction of structurally diverse five-membered rings via [3+2] annulation
reactions.
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Affiliation(s)
- Ana L. Cardoso
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria I.L. Soares
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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17
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Xie ZZ, Deng ZX, Zheng Y, Chen YS, Xiao JA, Chen K, Xiang HY, Yang H. A phosphine-mediated domino sequence of salicylaldehyde with but-3-yn-2-one: rapid access to chromanone. Org Biomol Chem 2020; 18:8916-8920. [DOI: 10.1039/d0ob01588a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Chromanone is a privileged structure with a wide range of unique biological activities.
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Affiliation(s)
- Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Yu Zheng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Yan-Shan Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science
- Nanning Normal University
- Nanning 530001
- P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety
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18
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Wu JH, Pan J, Du J, Wang X, Wang X, Jiang C, Wang T. Enantioselective Synthesis of Multifunctionalized 4H-Pyrans via Formal [4 + 2] Annulation Process by Bifunctional Phosphonium Salt Catalysis. Org Lett 2019; 22:395-399. [DOI: 10.1021/acs.orglett.9b04079] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jia-Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Jianke Pan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Juan Du
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaoxia Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xuemei Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Chunhui Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, 2 Mengxi Road, Zhenjiang 212003, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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19
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Dočekal V, Formánek B, Císařová I, Veselý J. A formal [4 + 2] cycloaddition of sulfur-containing alkylidene heterocycles with allenic compounds. Org Chem Front 2019. [DOI: 10.1039/c9qo00886a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A convenient enantioselective synthesis of sulfur heterocycles containing the dihydro-2H-pyran moiety by quinidine catalyzed formal [4 + 2] cycloaddition of 3-alkylidene benzo[b]thiophenes and allenoates is reported.
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Affiliation(s)
- Vojtěch Dočekal
- Department of Organic Chemistry
- Faculty of Science
- Charles University
- 128 43 Prague 2
- Czech Republic
| | - Bedřich Formánek
- Department of Organic Chemistry
- Faculty of Science
- Charles University
- 128 43 Prague 2
- Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University
- 128 43 Prague 2
- Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry
- Faculty of Science
- Charles University
- 128 43 Prague 2
- Czech Republic
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20
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Shi Q, Wang W, Wang Y, Lan Y, Yao C, Wei D. Prediction on the origin of chemoselectivity in Lewis base-mediated competition cyclizations between allenoates and chalcones: a computational study. Org Chem Front 2019. [DOI: 10.1039/c9qo00606k] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The HOMOTSs and p-orbital contributions of the center atoms were used to predict the origin of chemoselectivity in this work.
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Affiliation(s)
- Qianqian Shi
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Wei Wang
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Yang Wang
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Yu Lan
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Changsheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
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21
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Anitha M, Kumara Swamy KC. Highly functionalised (γ-azido/γ-fluoro-β-iodo/)vinyl derivatives from phosphorus based allenes or allenoates: I⋯O halogen bonding interactions. Org Biomol Chem 2019; 17:5736-5748. [DOI: 10.1039/c9ob00715f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
γ-Azido/γ-fluoro-β-iodo-vinyl phosphine oxides/phosphonates/esters/sulphone and a γ-diodoallene were synthesised from phosphorus-based allenes or allenoates or a sulphur based allene; in many cases, I⋯O halogen bonding is observed in the solid state.
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Affiliation(s)
- Mandala Anitha
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
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22
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Abstract
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of cases, these electrophiles possess carbon-carbon multiple bonds: alkenes (section 2), allenes (section 3), alkynes (section 4), and Morita-Baylis-Hillman (MBH) alcohol derivatives (MBHADs; section 5). Within each of these sections, the reactions are compiled based on the nature of the second starting material-nucleophiles, dinucleophiles, electrophiles, and electrophile-nucleophiles. Nucleophilic phosphine catalysis reactions that occur via the initial addition to starting materials that do not possess carbon-carbon multiple bonds are collated in section 6. Although not catalytic in the phosphine, the formation of ylides through the nucleophilic addition of phosphines to carbon-carbon multiple bond-containing compounds is intimately related to the catalysis and is discussed in section 7. Finally, section 8 compiles miscellaneous topics, including annulations of the Hüisgen zwitterion, phosphine-mediated reductions, iminophosphorane organocatalysis, and catalytic variants of classical phosphine oxide-generating reactions.
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Affiliation(s)
- Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yi Chiao Fan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
| | - Zhanhu Sun
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
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23
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New reactions of allenes, alkynes, ynamides, enynones and isothiocyanates. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1496-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Zhao MN, Zhang ZJ, Ren ZH, Yang DS, Guan ZH. Copper-Catalyzed Oxidative Cyclization/1,2-Amino Migration Cascade Reaction. Org Lett 2018; 20:3088-3091. [DOI: 10.1021/acs.orglett.8b01139] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mi-Na Zhao
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710127, P. R. China
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, P. R. China
| | - Zhi-Jing Zhang
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Zhi-Hui Ren
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - De-Suo Yang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, P. R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710127, P. R. China
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25
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Xing JJ, Gao YN, Shi M. Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and p
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiao-Jiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- 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
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26
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Li J, Chen Y, Yuan H, Hu J, Cui Y, Yang M, Li M, Li J. Phosphine-Catalyzed Domino Reaction of α,β-Unsaturated Ketone and Allenoate: Stereoselective Synthesis of Polysubstituted Dihydro-2H
-Pyran. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800268] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jianxiong Li
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Yaoyao Chen
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Hongdong Yuan
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Jie Hu
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Yongmei Cui
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Meng Yang
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Min Li
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
| | - Jian Li
- Department of Chemistry; Shanghai University; 99 Shangda Road Shanghai 200444 People's Republic of China
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27
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Holzschneider K, Kirsch SF. [1, 2]-Migration Reactions Catalyzed by Gold Complexes and their Applications in Total Synthesis. Isr J Chem 2018. [DOI: 10.1002/ijch.201700081] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Stefan F. Kirsch
- Organic Chemistry; Bergische Universität Wuppertal; Gaußstr. 20 42119 Wuppertal Germany
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28
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Hu Y, Li S, Wang Z, Yao Y, Li T, Yu C, Yao C. NHC-Catalyzed Hetero-Diels-Alder Reaction of Allenoate with Chalcone: Synthesis of Polysubstituted Pyranyl Carboxylate. J Org Chem 2018; 83:3361-3366. [PMID: 29430931 DOI: 10.1021/acs.joc.7b03173] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An NHC-catalyzed hetero-Diels-Alder and isomerization process of chalcones with allenoates was discovered, which furnished highly functionalized multisubstituted pyranyl carboxylates successfully. This method features a convergent assembly, mild reaction conditions, moderate to good yields, and high atom economy.
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Affiliation(s)
- Yong Hu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Sha Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Zhanlin Wang
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Yibiao Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Tuanjie Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Chenxia Yu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Changsheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
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29
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Blanc A, Bénéteau V, Weibel JM, Pale P. Silver & gold-catalyzed routes to furans and benzofurans. Org Biomol Chem 2018; 14:9184-9205. [PMID: 27722719 DOI: 10.1039/c6ob01468b] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver and gold have become incredibly versatile and mild catalysts for numerous transformations, especially in heterocycle synthesis. For the most prominent of them, i.e. furans, silver and gold, with their unique reactivity and mildness, allow numerous possible routes to highly substituted and/or functionalized furans from a large variety of starting materials. Silver and gold catalysis provide thus the most flexible way to this important family of compounds. The present review describes these silver and gold-catalyzed routes, with some emphasis on mechanistic aspects, and proposes a comparison of both the silver and the gold-catalyzed syntheses of furans.
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Affiliation(s)
- Aurélien Blanc
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France.
| | - Valérie Bénéteau
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France.
| | - Jean-Marc Weibel
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France.
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France.
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30
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Ma S, Yu A, Meng X. Phosphine-catalyzed [4 + 2] annulation of γ-benzyl allenoates: facile synthesis of benzothieno[3,2-b]pyran derivatives. Org Biomol Chem 2018; 16:2885-2892. [DOI: 10.1039/c8ob00004b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An efficient tris(4-methoxyphenyl)phosphane catalyzed domino reaction between γ-benzyl allenoate and ethyl (Z)-2-(3-oxobenzo[b]thiophen-2(3H)-ylidene)acetate has been developed, which produces a series of 2H-benzo[4,5]thieno[3,2-b]pyran derivatives in high yields.
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Affiliation(s)
- Shanshan Ma
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry & Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Aimin Yu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry & Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Xiangtai Meng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry & Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
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31
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Li Y, Fu W, Liang C. Mechanisms and stereoselectivities of phosphine-catalyzed domino reaction of α-benzyl allenoate with 5-phenylmethylene thiazolone: a computational investigation. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2174-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Ni C, Chen J, Zhang Y, Hou Y, Wang D, Tong X, Zhu SF, Zhou QL. Phosphine-Catalyzed Asymmetric (3 + 2) Annulations of δ-Acetoxy Allenoates with β-Carbonyl Amides: Enantioselective Synthesis of Spirocyclic β-Keto γ-Lactams. Org Lett 2017; 19:3668-3671. [DOI: 10.1021/acs.orglett.7b01717] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chunjie Ni
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Jiangfei Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Yuwen Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Yading Hou
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Dong Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Xiaofeng Tong
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Shou-Fei Zhu
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Qi-Lin Zhou
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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33
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Phosphine-Mediated Sequential Annulation Reaction: Access to Functionalized Benzofurans and 4,5-Dihydrobenzofurans. Chemistry 2017; 23:7882-7886. [DOI: 10.1002/chem.201701026] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Indexed: 01/02/2023]
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34
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Xing J, Lei Y, Gao YN, Shi M. PPh 3-Catalyzed [3 + 2] Spiroannulation of 1C,3N-Bisnucleophiles Derived from Secondary β-Ketoamides with δ-Acetoxy Allenoate: A Route to Functionalized Spiro N-Heterocyclic Derivatives. Org Lett 2017; 19:2382-2385. [PMID: 28443669 DOI: 10.1021/acs.orglett.7b00910] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A [3 + 2] annulation of α-substituted secondary β-ketoamides with δ-acetoxy-modified allenoate has been developed in the presence of phosphine catalyst. In this spiroannulation reaction, β-ketoamides were used as the bis-nucleophilic partner while the γ,δ-carbon of 5-acetoxypenta-2,3-dienoate participated as a C2 synthon, affording the desired functionalized five-membered N-heterocyclic derivatives in moderate to excellent yields and diastereoselectivities under mild conditions. Preliminary attempts on the asymmetric variant of this reaction have been also examined, giving the corresponding products with moderate ee values.
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Affiliation(s)
- Jiaojiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China
| | - Yu Lei
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China.,State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University , Tianjin 300071, People's Republic of China.,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
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35
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Su Q, Qian H, Li Z, Sun X, Wang Z. Lewis-Base-Catalyzed Alkylation Reaction of 4-Hydroxycoumarins with Allenoates: Regioselective Synthesis of 2H
-[3,2-c] Furocoumarins and 4-Hydroxycoumarin Vinyl Ether Derivatives. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Qiuling Su
- College of Pharmaceutical Science; Zhejiang Chinese Medical University; Hangzhou Zhejiang 311400 P. R. China
- School of Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 P. R. China
| | - Houjun Qian
- School of Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 P. R. China
| | - Zhengyi Li
- School of Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 P. R. China
| | - Xiaoqiang Sun
- School of Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 P. R. China
| | - Zhiming Wang
- College of Pharmaceutical Science; Zhejiang Chinese Medical University; Hangzhou Zhejiang 311400 P. R. China
- School of Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 P. R. China
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36
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Jin H, Li E, Huang Y. Divergent synthesis of hydropyridine derivatives via nitrogen-containing Lewis base mediated regioselective [4 + 2] cyclizations. Org Chem Front 2017. [DOI: 10.1039/c7qo00596b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A nitrogen-containing Lewis base mediated regioselective [4 + 2] cyclization strategy between allenic esters and α,β-unsaturated ketimines was discovered.
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Affiliation(s)
- Hongxing Jin
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 30071
- China
| | - Erqing Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 30071
- China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 30071
- China
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37
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Luo W, Hu H, Nian S, Qi L, Ling F, Zhong W. Phosphine-catalyzed [3 + 2] annulation reaction: highly regio- and diastereoselective synthesis of 2-azaspiro[4.4]nonene-1,3-diones. Org Biomol Chem 2017; 15:7523-7526. [DOI: 10.1039/c7ob01957b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A novel method for phosphine-catalyzed [3 + 2] annulation of γ-substituted allenoates with succinimides was developed, which was successfully applied to the synthesis of 2-azaspiro[4.4]nonene-1,3-diones derivatives in 50–96% yield, with high regio- and diastereoselectivities.
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Affiliation(s)
- Wenjun Luo
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014
- P R China
| | - Haiwen Hu
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014
- P R China
| | - Sanfei Nian
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014
- P R China
| | - Liang Qi
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014
- P R China
| | - Fei Ling
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014
- P R China
| | - Weihui Zhong
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014
- P R China
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38
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Wang C, Jia H, Zhang C, Gao Z, Zhou L, Yuan C, Xiao Y, Guo H. Phosphine-Catalyzed Enantioselective [2+4] Cycloaddition to Synthesize Pyrrolidin-2-one Fused Dihydropyrans Using α-Substituted Allenoates as C2 Synthons. J Org Chem 2016; 82:633-641. [DOI: 10.1021/acs.joc.6b02659] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chang Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Hao Jia
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Cheng Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhenzhen Gao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Leijie Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Chunhao Yuan
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
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39
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Hirai S, Asahara H, Nishiwaki N. Acid promoted dimerization of β-amino-α,β-unsaturated amides affording bis(functionalized) pyrrolinones. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Wang NN, Huang LR, Hao WJ, Zhang TS, Li G, Tu SJ, Jiang B. Synergistic Rhodium/Copper Catalysis: Synthesis of 1,3-Enynes and N-Aryl Enaminones. Org Lett 2016; 18:1298-301. [DOI: 10.1021/acs.orglett.6b00238] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Nan-Nan Wang
- School
of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Lei-Rong Huang
- School
of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Juan Hao
- School
of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Tian-Shu Zhang
- School
of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Guigen Li
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- Institute of Chemistry & BioMedical Sciences, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Shu-Jiang Tu
- School
of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School
of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
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41
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Siva Kumari AL, Kumara Swamy KC. Gold-Catalyzed Concomitant [3 + 3] Cycloaddition/Cascade Heterocyclization of Enynones/Enynals with Azides Leading to Furanotriazines. J Org Chem 2016; 81:1425-33. [DOI: 10.1021/acs.joc.5b02567] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Leela Siva Kumari
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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42
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Anitha M, Gangadhararao G, Kumara Swamy KC. Base catalysed intermolecular cyclisation of N-protected o-amino benzaldehyde/acetophenone with phosphorus/sulphur based allenes: facile synthesis of substituted quinolines. Org Biomol Chem 2016; 14:3591-602. [DOI: 10.1039/c6ob00259e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Base catalyzed reaction of N-Bz protected o-aminobenzaldehyde with allenylphosphonates affords O-phosphorylated quinolines via a route involving a thermal rearrangement.
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Affiliation(s)
- Mandala Anitha
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
| | - G. Gangadhararao
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
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43
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Siva Kumari AL, Siva Reddy A, Swamy KCK. Exploring the gold mine: [Au]-catalysed transformations of enynals, enynones and enynols. Org Biomol Chem 2016; 14:6651-71. [DOI: 10.1039/c6ob00698a] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review highlights reactions of enynals, enynones and enynols using gold catalysis which often lead to cycloaddition or cyclisation products.
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Affiliation(s)
| | - Alla Siva Reddy
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
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44
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Li Y, Du S. Understanding the mechanisms, regioselectivies and enantioselectivities of the DMAP-catalyzed [2 + 4] cycloaddition of γ-methyl allenoate and phenyl(phenyldiazenyl)methanone. RSC Adv 2016. [DOI: 10.1039/c6ra16321a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
DMAP-catalyzed [2 + 4] cycloaddition reaction.
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Affiliation(s)
- Yan Li
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Shiwen Du
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
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45
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Li Y, Du S, Du Z, Chen C. A theoretical study of DABCO and PPh3 catalyzed annulations of allenoates with azodicarboxylate. RSC Adv 2016. [DOI: 10.1039/c6ra19308k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Previous experiments have shown that DABCO-catalyzed annulation of 2,3-butadienoate and diethylazodicarboxylate leads to 1,2-diazetidine (reaction (1)), whereas PPh3-catalyzed 2-benzyl-2,3-butadienoate and diethylazodicarboxylate gives pyrazoline (reaction (2)).
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Affiliation(s)
- Yan Li
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Shiwen Du
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Zheng Du
- National Supercomputing Center in Shenzhen (Shenzhen Cloud Computing Center)
- Shenzhen
- China
| | - Congmei Chen
- National Supercomputing Center in Shenzhen (Shenzhen Cloud Computing Center)
- Shenzhen
- China
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46
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Li JH, Du DM. Phosphine-Catalyzed Cascade Reaction of Unsaturated Pyrazolones with Alkyne Derivatives: Efficient Synthesis of Pyrano[2,3-c]pyrazoles and Spiro-cyclopentanone-pyrazolones. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500675] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Xu S, Chen J, Shang J, Qing Z, Zhang J, Tang Y. Divergent amine-catalyzed [2+2] annulation of allenoates with azodicarboxylates: facile synthesis of 1,2-diazetidines. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.151] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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48
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Uruvakili A, Gangadhararao G, Kumara Swamy KC. Gold(I) catalysed sequential dehydrative cyclisation/intermolecular [4 + 2] cycloaddition of alkynyldienols onto activated alkynes/alkenes: a facile route to substituted norbornadienes/norbornenes. Org Biomol Chem 2015; 13:10060-71. [PMID: 26335651 DOI: 10.1039/c5ob01458a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot synthesis of highly substituted norbornadienes/norbornenes via gold-catalysed dehydrative cyclisation of alkynyldienols, followed by intermolecular [4 + 2] cycloaddition of in situ generated cyclopentadiene and activated alkynes/alkenes is described. The precursors, alkynyldienols, are obtained via sequential Sonogashira cross-coupling of 3-bromoenals, alkyne addition and reduction. Yields of the enynals and multisubstituted norbornadienes in all the cases are good to excellent.
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Affiliation(s)
- Anasuyamma Uruvakili
- School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India.
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