1
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Liu Y, Choy PY, Wang D, Wu M, Tang Q, He X, Shang Y, Kwong FY. Cascade Annulation Strategy for Expeditious Assembly of Hydroxybenzo[ c]chromen-6-ones and Their Photophysical Property Studies. J Org Chem 2023; 88:16609-16620. [PMID: 37978943 DOI: 10.1021/acs.joc.3c02188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
A 1,8-diazabicyclo[5.4.0]undec-7-ene-promoted cascade double-annulation of ortho-alkynyl quinone methide (in situ generated from modular propargylamine) for constructing of 2-aryl-4-hydroxybenzo[c]chromen-6-ones is developed. This synthetic strategy offers remarkable operational simplicity as it allows the use of benchtop-grade solvents without the need for predrying measures and inert atmosphere protection. Additionally, it demonstrates good functional group compatibility. The photophysical properties of these compounds were also examined, revealing bright fluorescence with high quantum yields.
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Affiliation(s)
- Yanan Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Pui Ying Choy
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, New Territories, Shatin, Hong Kong, P. R. China
| | - Demao Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Mengdi Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Qiang Tang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Fuk Yee Kwong
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, New Territories, Shatin, Hong Kong, P. R. China
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2
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Kambale DA, Borade BR, Vinodkumar R, Kontham R. Divergent Synthesis of Oxepino-Phthalides and [5,5]-Oxaspirolactones through [2 + 2 + 2]- and [2 + 3]-Annulation of Alkynyl Alcohols with α-Ynone-Esters. J Org Chem 2023; 88:12597-12612. [PMID: 37611259 DOI: 10.1021/acs.joc.3c01301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Unmasking the synthetic potential of alkyne functional group of alkynyl alcohols as surrogates of carbonyl compounds, herein we present the first Brønsted acid (TfOH)-catalyzed [2 + 2 + 2]-annulation of 4-pentyn-1-ols (possessing terminal alkyne) with α-ynone-esters to access tricyclic tetrahydro-oxepino-phthalides. Besides, an unprecedented synthesis of α-acetoaryl or α-alkynyl [5,5]-oxaspirolactones has been demonstrated by employing 4-pentyn-1-ols (possessing an internal alkyne) as an annulation partner, which proceeds through a divergent [2 + 3]-annulation pathway.
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Affiliation(s)
- Digambar A Kambale
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Balasaheb R Borade
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ramavath Vinodkumar
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ravindar Kontham
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Carbon-based solid sulfonic acid catalyzed oxidative benzannulation to construct alkylamino-benzocoumarin. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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4
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Muralidhar B, Victoria GG, Kumar KS, Sabbsani RR. Copper‐mediated relay strategy using chlorination/oxidation: An effective synthesis of functionalized coumarin derivatives. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Baitinti Muralidhar
- Vellore Institute of Technology: VIT University school of advanced sciences INDIA
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5
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Swami B, Yadav D, Menon RS. Benzannulation Reactions: A Case for Perspective Change From Arene Decoration to Arene Construction. CHEM REC 2021; 22:e202100249. [PMID: 34796605 DOI: 10.1002/tcr.202100249] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 12/16/2022]
Abstract
Benzannulation reactions involve construction of a benzene ring from acyclic precursors. This class of reactions offer a versatile and often superior alternative to aromatic substitution for construction of substituted arenes. Selected pioneering and recent reports of various benzannulation reactions are categorised and discussed in this review.
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Affiliation(s)
- Bhawna Swami
- Department of Chemistry, Central University of Haryana Jant-Pali, Mahendergarh, Haryana, 120301, India
| | - Deepak Yadav
- Department of Chemistry, Central University of Haryana Jant-Pali, Mahendergarh, Haryana, 120301, India
| | - Rajeev S Menon
- Department of Chemistry, Central University of Haryana Jant-Pali, Mahendergarh, Haryana, 120301, India
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6
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Reddy TP, Gujral J, Roy P, Ramachary DB. Catalytic Ynone–Amidine Formal [4 + 2]-Cycloaddition for the Regioselective Synthesis of Tricyclic Azepines. Org Lett 2020; 22:9653-9657. [DOI: 10.1021/acs.orglett.0c03711] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T. Prabhakar Reddy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad,500 046, India
| | - Jagjeet Gujral
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad,500 046, India
| | - Pritam Roy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad,500 046, India
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7
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Rao YS, Latha DS, Devunuri N, Almansour AI, Arumugam N, Yaragorla S. Alkylation of α‐Oxo‐Compounds through C(sp
3
)‐H Functionalization of 2‐Methyl Quinolines Under Catalyst‐ and Solvent‐Free Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yadavalli Subba Rao
- School of Chemistry University of Hyderabad Telangana State 5000046 Hyderabad India
- Division of Chemistry Vignan's Foundation for Science Technology and Research (VFSTR) 522 213 Guntur India
| | | | - Nagaraju Devunuri
- Division of Chemistry Vignan's Foundation for Science Technology and Research (VFSTR) 522 213 Guntur India
| | - Abdulrahman I. Almansour
- Department of Chemistry College of Science King Saud University P.O. Box 2455 11451 Riyadh Saudi Arabia
| | - Natarajan Arumugam
- Department of Chemistry College of Science King Saud University P.O. Box 2455 11451 Riyadh Saudi Arabia
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8
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Vannada J, Sulthan M, Arun D, Dada R, Yaragorla S. Regiodivergent Synthesis of Penta-Substituted Pyrroles through a Cascade [3 + 2] Cyclization of C-Acylimines with Activated Alkynes and Aromatic Nucleophiles. J Org Chem 2020; 85:6697-6708. [PMID: 32319282 DOI: 10.1021/acs.joc.0c00712] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Highly robust one-pot, four-component cascade cyclization reaction of α-keto aldehydes, anilines, activated alkynes, and aromatic nucleophiles is developed to synthesize a diverse range of pharmaceutically important penta-substituted pyrroles. The reaction proceeds through the cascade cyclization of acylimines (in situ formed) with activated alkynes and aromatic nucleophiles such as indoles, pyrroles, and naphthols at room temperature under calcium(II) catalysis with high yields and broad substrate diversity.
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Affiliation(s)
- Jagadeshwar Vannada
- University College of Science, Osmania University, Saifabad, Hyderabad 500004, India
| | - Mahesh Sulthan
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India.,University College of Science, Osmania University, Saifabad, Hyderabad 500004, India
| | - Doma Arun
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India
| | - Ravikrishna Dada
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India
| | - Srinivasarao Yaragorla
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India
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9
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Devi Priya D, Mohana Roopan S. Claisen-Schmidt, aza-Michael, cyclization via cascade strategy toward microwave promoted synthesis of imidazo[2,1-b]quinazolines. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1757112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Duraipandi Devi Priya
- Department of Chemistry, Chemistry of Heterocycles and Natural Product Research Laboratory, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamilnadu, India
| | - Selvaraj Mohana Roopan
- Department of Chemistry, Chemistry of Heterocycles and Natural Product Research Laboratory, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamilnadu, India
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10
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Sun Y, Hu M, Fu S, Liu B. Recent advances in alkaline earth metal-enabled syntheses of heterocyclic compounds. Org Biomol Chem 2020; 18:6443-6466. [DOI: 10.1039/d0ob01233e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review summarizes recent progress in alkaline earth metal enabled syntheses of heterocyclic compounds.
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Affiliation(s)
- Ying Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| | - Mengqin Hu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
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11
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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.
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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
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12
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Yaragorla S, Dada R, Bag D. An Expeditious Benzannulation Reaction of Indol-3-yl-but-3-yn-2-ols to Substituted 2-Iodocarbazoles via Domino 5-endo
Spirocyclization/Selective Vinyl Shift and Aromatization. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901393] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road Gachibowli Hyderabad 500046 India
| | - Ravikrishna Dada
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road Gachibowli Hyderabad 500046 India
| | - Debojyoti Bag
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road Gachibowli Hyderabad 500046 India
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13
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Vachan BS, Ramesh A, Karuppasamy M, Muthukrishnan I, Nagarajan S, Menéndez JC, Maheswari CU, Sridharan V. Oxidant-free, three-component synthesis of 7-amino-6 H-benzo[ c]chromen-6-ones under green conditions. RSC Adv 2019; 9:32946-32953. [PMID: 35529159 PMCID: PMC9073129 DOI: 10.1039/c9ra07108c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/03/2019] [Indexed: 01/24/2023] Open
Abstract
An oxidant-free three-component synthesis of biologically significant 7-amino-6H-benzo[c]chromen-6-ones was established involving a Sc(OTf)3 catalyzed three-component reaction between primary amines, β-ketoesters and 2-hydroxychalcones under green conditions. In this strategy, both the B and C rings of 6H-benzo[c]chromen-6-ones were constructed simultaneously starting from acyclic precursors by generating four new bonds including two C-C, one C-N and one C-O in a single synthetic operation. The mechanism of this sequential cascade process involves the initial formation of a β-enaminone intermediate followed by Michael addition with 2-hydroxychalcone, intramolecular cyclization, dehydration, lactonization and aromatization steps. Unlike the related literature approaches, this reaction delivered the products without the addition of any external oxidants to achieve the key aromatization step.
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Affiliation(s)
- B S Vachan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur-613401 Tamil Nadu India
| | - Aishwarya Ramesh
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur-613401 Tamil Nadu India
| | - Muthu Karuppasamy
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur-613401 Tamil Nadu India
| | - Isravel Muthukrishnan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur-613401 Tamil Nadu India
| | - Subbiah Nagarajan
- Department of Chemistry, National Institute of Technology Warangal Warangal-506004 Telangana India
| | - J Carlos Menéndez
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense 28040 Madrid Spain
| | - C Uma Maheswari
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur-613401 Tamil Nadu India
| | - Vellaisamy Sridharan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur-613401 Tamil Nadu India
- Department of Chemistry and Chemical Sciences, Central University of Jammu Rahya-Suchani (Bagla), District-Samba Jammu-181143 J&K India
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14
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Khaja Mohinuddin PM, Dada R, Almansour AI, Arumugam N, Yaragorla S. Ca(II)-catalyzed diastereoselective formal [4+2] annulation of a 3-component solvent-free povarov reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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15
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Suresh A, Baiju TV, Kumar T, Namboothiri INN. Synthesis of Spiro- and Fused Heterocycles via (4+4) Annulation of Sulfonylphthalide with o-Hydroxystyrenyl Derivatives. J Org Chem 2019; 84:3158-3168. [PMID: 30776237 DOI: 10.1021/acs.joc.8b03039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An expedient one-pot protocol for the synthesis of functionalized benzofuran containing fused and spiro-heterocycles has been accomplished by the modified Hauser-Kraus (HK) annulation of sulfonylphthalide with o-hydroxychalcones and o-hydroxynitrostyrylisoxazoles. The multicascade process involves Michael addition, Dieckmann cyclization, and a series of cyclizations, eliminations, and rearrangements to deliver the fused and spiro-heterocyclic products. An unusual transformation of fused indenofuran to naphthoquinone, the classical HK adduct, unraveled a novel pathway for the synthesis unsymmetrical naphthoquinones.
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Affiliation(s)
- Alati Suresh
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai , 400076 , India
| | - Thekke V Baiju
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai , 400076 , India
| | - Tarun Kumar
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai , 400076 , India
| | - Irishi N N Namboothiri
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai , 400076 , India
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16
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Galeev AR, Dmitriev MV, Mokrushin IG, Mashevskaya IV, Maslivets AN, Rubin M. Synthesis ofmeta-substituted anilinesviaa three-component reaction of acetone, amines, and 1,3-diketones. Org Biomol Chem 2019; 17:10030-10044. [DOI: 10.1039/c9ob02120e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A facilede novosynthesis ofmeta-substituted arylamines based on three-component cyclo-condensation/aromatization ofin situgenerated imines with 1,3-diketones is described.
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Affiliation(s)
- Andrew R. Galeev
- Department of Chemistry
- Perm State University
- Perm
- Russian Federation
| | | | | | | | | | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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17
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Rocchi D, González JF, Gómez-Carpintero J, González-Ruiz V, Martín MA, Sridharan V, Menéndez JC. Three-Component Synthesis of a Library of m-Terphenyl Derivatives with Embedded β-Aminoester Moieties. ACS COMBINATORIAL SCIENCE 2018; 20:722-731. [PMID: 30248256 DOI: 10.1021/acscombsci.8b00137] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The three-component reaction between alkyl- or arylamines, β-ketoesters and chalcones in refluxing ethanol containing a catalytic amount of Ce(IV) ammonium nitrate allowed the construction of a large library of highly substituted dihydro- m-terphenyl derivatives containing β-alkylamino- or β-arylamino ester moieties. This process generates three new bonds and one ring and proceeds in high atom economy, having two molecules of water as the only side product. Another domino process, in which the original MCR was telescoped with a subsequent aza Michael/retro-aza Michael sequence, allowed the one-pot preparation of a library of compounds with a N-unsubstituted β-aminoester fragment. Finally, to extend the structural diversity of these libraries, we also examined the aromatization of the central ring of our compounds in the presence of dichlorodicyanoquinone. This reaction sequence did not affect the integrity of a stereogenic center belonging to the amino component.
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Affiliation(s)
- Damiano Rocchi
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Juan F. González
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Jorge Gómez-Carpintero
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Víctor González-Ruiz
- Unidad de Química Analítica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - M. Antonia Martín
- Unidad de Química Analítica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Vellaisamy Sridharan
- Organic Synthesis Group, Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
- Department of Chemistry and Chemical Sciences, Central University of Jammu, Rahya-Suchani (Bagla), District-Samba, Jammu-181143, Jammu and Kashmir, India
| | - J. Carlos Menéndez
- Unidad de Química Orgánica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
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18
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Yaragorla S, Rajesh P, Pareek A, Kumar A. Ca(II)-Mediated Regioselective One-pot Sequential Annulation of Acyclic compounds to Polycyclic Fluorenopyrans. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801030] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046 India
| | - P. Rajesh
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046 India
| | - Abhishek Pareek
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046 India
| | - Ankit Kumar
- School of Chemistry; University of Hyderabad; Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046 India
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19
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Bai H, Sun R, Liu S, Yang L, Chen X, Huang C. Construction of Fully Substituted 2-Pyridone Derivatives via Four-Component Branched Domino Reaction Utilizing Microwave Irradiation. J Org Chem 2018; 83:12535-12548. [DOI: 10.1021/acs.joc.8b01788] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hairui Bai
- Engineering Research Center of Biopolymer Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Rongrong Sun
- Engineering Research Center of Biopolymer Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Shitao Liu
- Engineering Research Center of Biopolymer Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Lijuan Yang
- Engineering Research Center of Biopolymer Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
| | - Xuebing Chen
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan, School of Science, Honghe University, Mengzi 661199, P.R. China
| | - Chao Huang
- Engineering Research Center of Biopolymer Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P.R. China
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Bai H, Sun R, Chen X, Yang L, Huang C. Microwave-Assisted, Solvent-Free, Three-Component Domino Protocol: Efficient Synthesis of Polysubstituted-2-Pyridone Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201800606] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hairui Bai
- Engineering Research Center of Biopolymer Functional Materials of Yunnan; School of Chemistry and Environment; Yunnan Minzu University, Kunming; 650500, P. R. China
| | - Rongrong Sun
- Engineering Research Center of Biopolymer Functional Materials of Yunnan; School of Chemistry and Environment; Yunnan Minzu University, Kunming; 650500, P. R. China
| | - Xuebing Chen
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan; School of Science; Honghe University, Mengzi; 661100, P. R. China
| | - Lijuan Yang
- Engineering Research Center of Biopolymer Functional Materials of Yunnan; School of Chemistry and Environment; Yunnan Minzu University, Kunming; 650500, P. R. China
| | - Chao Huang
- Engineering Research Center of Biopolymer Functional Materials of Yunnan; School of Chemistry and Environment; Yunnan Minzu University, Kunming; 650500, P. R. China
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Yaragorla S, Dada R, Rajesh P, Sharma M. Highly Regioselective Synthesis of Oxindolyl-Pyrroles and Quinolines via a One-Pot, Sequential Meyer-Schuster Rearrangement, Anti-Michael Addition/C (sp3)-H Functionalization, and Azacyclization. ACS OMEGA 2018; 3:2934-2946. [PMID: 30023853 PMCID: PMC6044873 DOI: 10.1021/acsomega.8b00147] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 02/27/2018] [Indexed: 06/08/2023]
Abstract
A one-pot, sequential Meyer-Schuster (MS) rearrangement of oxindole-derived propargyl alcohols to the corresponding α,β-unsaturated enones and their anti-Michael addition, followed by intramolecular azacyclization is described in a highly regioselective manner using Ca(OTf)2 as the promoter. Further, we described the one-pot MS rearrangement, followed by C(sp3)-H functionalization of 2-methyl azaarenes at α-carbon of these doubly activated alkenes. Control experiments and computational calculations were performed to propose the reaction mechanism.
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Yaragorla S, Pareek A. Regioselective intramolecular annulations of ambident β-enamino esters: A diversity-oriented synthesis of nitrogen-containing privileged molecules. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yaragorla S, Dada R, Pareek A. Regioselective Synthesis of 1,4 & 1,5-Enynes through a Ca(II)- Catalyzed Cross-Dehydrative-Coupling of Styrenes and Propargyl alcohols. ChemistrySelect 2018. [DOI: 10.1002/slct.201702278] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; Hyderabad 500046 India
| | - Ravikrishna Dada
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; Hyderabad 500046 India
| | - Abhishek Pareek
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; Hyderabad 500046 India
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