1
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Teli B, Waseem MA, Rashid S, Ganaie BA, Bhat BA. Catalyst free synthesis of
2‐Aryl‐2
H
‐benzo[
b
][1,4]oxazines and
3‐Aryl‐2H
‐benzo[
b
][1,4]thiazin‐2‐ones: An ultrasonication‐assisted strategy. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4267] [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)
- Bisma Teli
- Natural Products and Medicinal Chemistry CSIR‐Indian Institute of Integrative Medicine Jammu & Kashmir India
- Academy of Scientific & Innovative Research (AcSIR) Ghaziabad India
| | - Malik Abdul Waseem
- Natural Products and Medicinal Chemistry CSIR‐Indian Institute of Integrative Medicine Jammu & Kashmir India
| | - Showkat Rashid
- Natural Products and Medicinal Chemistry CSIR‐Indian Institute of Integrative Medicine Jammu & Kashmir India
| | - Bilal Ahmad Ganaie
- Natural Products and Medicinal Chemistry CSIR‐Indian Institute of Integrative Medicine Jammu & Kashmir India
| | - Bilal A. Bhat
- Natural Products and Medicinal Chemistry CSIR‐Indian Institute of Integrative Medicine Jammu & Kashmir India
- Academy of Scientific & Innovative Research (AcSIR) Ghaziabad India
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2
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Sun QS, Sun J, Pan LN, Yan CG. Selective Construction of Diverse Polycyclic Spirooxindoles via a Three-Component Reaction of Cyclic Mercapto-Substituted β-Enamino Esters, Isatins, and Cyclic 1,3-Diketones. J Org Chem 2020; 85:12117-12127. [PMID: 32901479 DOI: 10.1021/acs.joc.0c01290] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The three-component reaction of alkyl 2-(benzo[b][1,4]thiazin-3-ylidene)acetates, isatins, and 1,3-indanedione (1,3-cyclopentanedione) in ethanol in the presence of acetic acid conveniently afforded spiro[indeno[1,2-b]phenothiazine-6,3'-indolines] or spiro[cyclopenta[b]phenothiazine-4,3'-indolines] in good yields and with high diastereoselectivity. More interestingly, a similar three-component reaction with 4-hydroxychromen-2-one resulted in the unexpected polycyclic spiro[benzo[b]chromeno[3',4':5,6]pyrano[2,3-e][1,4]thiazine-7,3'-indolines] in satisfactory yields. A plausible reaction mechanism was rationally proposed for formation of different kinds of the spiro compounds, and the stereochemistries of the various spiro compounds were clearly elucidated.
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Affiliation(s)
- Quan-Shun Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Liu-Na Pan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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3
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Dong K, Jin XL, Chen S, Wu LZ, Liu Q. Controllable synthesis of 2- and 3-aryl-benzomorpholines from 2-aminophenols and 4-vinylphenols. Chem Commun (Camb) 2020; 56:7941-7944. [PMID: 32531007 DOI: 10.1039/d0cc02662j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present herein a method for the controllable synthesis of 3-aryl-benzomorpholine and 2-aryl-benzomorpholine cycloadducts via cross-coupling/annulation between electron-rich 2-aminophenols and 4-vinylphenols. Molecular oxygen was successfully used in the reaction as the terminal oxidant and the complete inversion of chemoselectivity was achieved by the adjustment of the solvents and bases at room temperature.
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Affiliation(s)
- Kui Dong
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
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4
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Novel Aryl-Imidazolium Ionic Liquids with Dual Brønsted/Lewis Acidity as Both Solvents and Catalysts for Friedel–Crafts Alkylation. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9224743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Unique tunable aryl-imidazolium magnetic ionic liquids with dual functions as a solvent–catalyst and dual Brønsted–Lewis acidity (B-L MILs) are applied for Friedel–Crafts alkylation without additional solvents. The catalytic properties of these B-L MILs in the Friedel–Crafts alkylation of p-xylene with benzyl chloride are investigated. The various reaction parameters, including the catalyst dosage, reaction time, reaction temperature, molar ratio of reactants, and reusability, are discussed. The results show that the B-L MIL 5c has more excellent product selectivity (>99%) and reactant conversion (>99%) under the following optimum conditions (reaction temperature = 80 °C, reaction time = 0.5 h, molar ratio of p-xylene to benzyl chloride = 6:1, and catalyst 5c dosage = 1.0 mole %) than traditional catalysts reported in the previous literature. Specifically, due to the mesomeric effect between the FeCl4 anion and hydrogen atom at cationic moiety, the catalyst B-L MILs with the molar fraction of FeCl3 equal to 0.5 can be easily recovered and provide satisfactory catalytic activity after being re-used six times.
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5
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Zhan S, Yan C. Efficient Synthesis of Functionalized 6‐(2‐Oxoindolin‐3‐yl)‐5‐azaspiro[2.4]heptanes. ChemistrySelect 2019. [DOI: 10.1002/slct.201902785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shao‐Cong Zhan
- School of Chemistry & Chemical EngineeringYangzhou University Yangzhou 225002 China
| | - Chao‐Guo Yan
- School of Chemistry & Chemical EngineeringYangzhou University Yangzhou 225002 China
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6
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Aegurla B, Peddinti RK. Dehydrative C‐ and S‐Alkylation: Access to Highly Substituted 1‐Sulfonylpropanes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Balakrishna Aegurla
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247 667, Uttarakhand India
| | - Rama Krishna Peddinti
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247 667, Uttarakhand India
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7
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Xiao M, Jiang YH, Yan CG. Three-component reaction of o-aminophenol (o-phenylenediamine), dialkyl acetylenedicarboxylate and 3-phenacylideneoxindolines. Mol Divers 2018; 23:123-135. [DOI: 10.1007/s11030-018-9853-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 06/19/2018] [Indexed: 01/06/2023]
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8
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Sun QS, Sun J, Jiang W, Yan CG. Annulation reaction of methyl 2-(benzo[ b ][1,4]thiazin-3-ylidene)acetate with β -nitrostyrenes and 3-nitrochromenes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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9
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Nongthombam GS, Nongkhlaw R. Experimental and theoretical studies on SPION@glutathione catalyzed synthesis of indolyl chromene, indolo xanthene, and pyrimido[4,5- b]quinoline. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1410893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Geetmani Singh Nongthombam
- Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, India
- Applied Organic Synthesis Group, Division of Chemical Science and Technology, CSIR-North East Institute of Science and Technology, Jorhat, India
| | - Rishanlang Nongkhlaw
- Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, India
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10
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Das J, Sarkar A, Ghosh P. Friedelane triterpenoids: transformations toward A-ring modifications including 2-homoderivatives. NEW J CHEM 2018. [DOI: 10.1039/c8nj00009c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Common reaction strategies were employed on suitable substrates to achieve a series of C2,C3-; C3,C4- and C2,C3,C4-functionalized (including 2-homo-) friedelane triterpenoids with just one to four efficient steps.
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Affiliation(s)
- Jayanta Das
- Natural Products and Polymer Chemistry Laboratory
- Department of Chemistry
- North Bengal University
- Darjeeling-734013
- India
| | - Antara Sarkar
- Natural Products and Polymer Chemistry Laboratory
- Department of Chemistry
- North Bengal University
- Darjeeling-734013
- India
| | - Pranab Ghosh
- Natural Products and Polymer Chemistry Laboratory
- Department of Chemistry
- North Bengal University
- Darjeeling-734013
- India
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11
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Bisht S, Peddinti RK. FeCl 3-Mediated Domino Reaction of Benzoxazinones with Aroylmethylidene Malonates: Synthesis to Functionalized Pyrrolobenzoxazines. J Org Chem 2017; 82:13617-13625. [PMID: 29161050 DOI: 10.1021/acs.joc.7b02207] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient domino approach for the synthesis of pyrrolobenzoxazine derivatives is described. The FeCl3-promoted domino reaction between aroylmethylidene malonates and benzoxazinones has been successfully established to afford the title compounds in good to excellent yield under mild reaction conditions. The domino protocol provides a concise and straightforward access to highly substituted pyrrolobenzoxazines with high efficiency and excellent functional group tolerance.
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Affiliation(s)
- Shweta Bisht
- Department of Chemistry, Indian Institute of Technology , Roorkee Roorkee, 247667 Uttarakhand, India
| | - Rama Krishna Peddinti
- Department of Chemistry, Indian Institute of Technology , Roorkee Roorkee, 247667 Uttarakhand, India
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12
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Sharma S, Kumar P, Sharma A, Peddinti RK. BF3
·OEt2
-Mediated Synthesis of 2-Arylthio- and (N
-Aryl-2,5-dioxopyrrolidin-3-yl)-Substituted 1,4-Benzoxazine Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shivangi Sharma
- Department of Chemistry; Indian Institute of Technology Roorkee; 247667 Roorkee India
| | - Pravin Kumar
- Department of Chemistry; Indian Institute of Technology Roorkee; 247667 Roorkee India
| | - Arun Sharma
- Department of Chemistry; Indian Institute of Technology Roorkee; 247667 Roorkee India
| | - Rama Krishna Peddinti
- Department of Chemistry; Indian Institute of Technology Roorkee; 247667 Roorkee India
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13
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Palladium-mediated synthesis of 1,1,2-triarylethanes. Application to the synthesis of CDP-840. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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14
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Sharma N, Peddinti RK. BF 3·OEt 2 Mediated Regioselective Reaction of Electron-Rich Arenes with 3-Ylidene Oxindoles. J Org Chem 2017; 82:918-924. [PMID: 27992723 DOI: 10.1021/acs.joc.6b02395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A BF3·OEt2 mediated novel and regioselective protocol for the construction of a C-C bond between 3-ylidene oxindoles and electron-rich arenes has been successfully accomplished. The reaction was compatible with a wide variety of electron-rich arenes. A cascade reaction of 3-ylidene oxindoles with phenols and β-naphthol resulted in 2,3-difunctionalized benzofuran and lactone bearing indoline-2-one scaffolds under same conditions.
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Affiliation(s)
- Nitika Sharma
- Department of Chemistry, Indian Institute of Technology , Roorkee-247667, Uttarakhand, India
| | - Rama Krishna Peddinti
- Department of Chemistry, Indian Institute of Technology , Roorkee-247667, Uttarakhand, India
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15
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Yang RY, Sun J, Sun Q, Yan CG. Selective construction of polycyclic spirooxindoles via a Cu(OTf)2/HOTf-catalyzed domino reaction of o-arylalkynylacetophenones and 3-phenacylideneoxindoles. Org Biomol Chem 2017; 15:6353-6357. [DOI: 10.1039/c7ob01292f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under the combined catalysis of Cu(OTf)2/HOTf, the domino annulation reaction ofo-arylalkynyl acetophenones with 3-phenacylideneoxindoles in refluxing acetonitrile selectively afforded functionalized spiro[indoline-3,7′-tetrapheno[7,6-bc]furans].
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Affiliation(s)
- Ren-Yin Yang
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Jing Sun
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Qiu Sun
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
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16
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Wang S, Chai Z, Wei Y, Zhu X, Zhou S, Wang S. Lewis Acid Catalyzed Cascade Reaction to Carbazoles and Naphthalenes via Dehydrative [3 + 3]-Annulation. Org Lett 2014; 16:3592-5. [DOI: 10.1021/ol501605h] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Shaoyin Wang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
- Department of Chemistry, Wannan Medical College, Wuhu, Anhui 241002, P. R. China
| | - Zhuo Chai
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Yun Wei
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Xiancui Zhu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Shuangliu Zhou
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Shaowu Wang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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17
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Naganaboina RT, Nayak A, Peddinti RK. Trifluoroacetic acid-promoted Michael addition-cyclization reactions of vinylogous carbamates. Org Biomol Chem 2014; 12:3366-70. [PMID: 24756460 DOI: 10.1039/c4ob00437j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient methodology has been developed for the synthesis of pyrrolobenzoxazine and 3-arylamino coumarin derivatives promoted by trifluoroacetic acid. The initial step in the current protocol involves a Michael addition of the 1,4-benzoxazinone derivatives, a novel class of vinylogous carbamates to the Michael acceptors and subsequent cyclization.
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Affiliation(s)
- Ram Tilak Naganaboina
- The Department of Chemistry, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India.
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18
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Hu J, Qin HL, Xu W, Li J, Zhang F, Zheng H. TfOH-catalyzed synthesis of 3-aryl isoindolinones via a tandem reaction. Chem Commun (Camb) 2014; 50:15780-3. [DOI: 10.1039/c4cc06653g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient method for the synthesis of 3-aryl isoindolinones via TfOH catalyzed C–H functionalization of arenes with 2-formylbenzonitriles is developed.
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Affiliation(s)
- Jiaxing Hu
- Department of Pharmaceutical Engineering
- Wuhan University of Technology
- Wuhan, China
| | - Hua-Li Qin
- Department of Pharmaceutical Engineering
- Wuhan University of Technology
- Wuhan, China
| | - Wengang Xu
- Department of Pharmaceutical Engineering
- Wuhan University of Technology
- Wuhan, China
| | - Junli Li
- Department of Pharmaceutical Engineering
- Wuhan University of Technology
- Wuhan, China
| | - Fanglin Zhang
- Department of Pharmaceutical Engineering
- Wuhan University of Technology
- Wuhan, China
| | - Hua Zheng
- Department of Pharmaceutical Engineering
- Wuhan University of Technology
- Wuhan, China
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