1
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Heckershoff R, Eberle L, Richert N, Delavier C, Bruckschlegel M, Schäfer MR, Krämer P, Rominger F, Rudolph M, Hashmi ASK. Versatile access to nitrogen-rich π-extended indolocarbazoles via a Pictet–Spengler approach. Org Chem Front 2023. [DOI: 10.1039/d2qo01459a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
A bidirectional Pictet-Spengler Reaction allows easy access to nitrogen-rich aromatics with seven fused rings. Photophysical measurements and computational methods show significant differences to parent N-heteropolycycles with fewer nitrogen atoms.
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Affiliation(s)
- Robin Heckershoff
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Lukas Eberle
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Nick Richert
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Christian Delavier
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Michael Bruckschlegel
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Moritz R. Schäfer
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Petra Krämer
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut (OCI), Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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2
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Luo H, Cao T, Zhu S. Divergent Synthesis of Ketone-Fused Indoles/Pyrroles via Metal-Guided Friedel-Crafts Cyclization. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Vonteddu NR, Solanke PR, Nayani K, Chandrasekhar S. Cation Triggered Domino Aza-Piancatelli Rearrangement/Friedel-Crafts Alkylation of Indole-Tethered Furfuyl Alcohols to Access Cycloocta[ b]indole Core of Alkaloids. Org Lett 2020; 22:8555-8560. [PMID: 33079545 DOI: 10.1021/acs.orglett.0c03155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A domino approach to bridged cycloocta[b]indolone through a cascade of aza-Piancatelli rearrangement/Friedel-Crafts alkylation is developed. This transformation has been realized by reaction of an indole-tethered 2-furylcarbinol and substituted aniline in the presence of a Lewis acid to initiate aza-Piancatelli rearrangement followed by an in situ intramolecular Friedel-Crafts alkylation to access bridged tetracyclic frameworks in one pot.
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Affiliation(s)
- Nagarjuna Reddy Vonteddu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Cipla Ltd, MIDC Patalganga, Rasayani, Maharashtra 410220, India
| | - Pooja R Solanke
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kiranmai Nayani
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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4
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Bakthadoss M, Vinayagam V. Construction of hybrid polycyclic quinolinobenzo[a]phenazinone architectures using solid-state melt reaction (SSMR). Mol Divers 2020; 25:2447-2458. [PMID: 32367313 DOI: 10.1007/s11030-020-10090-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 04/15/2020] [Indexed: 11/30/2022]
Abstract
An efficient and versatile protocol for the synthesis of hybrid polycyclic quinolinobenzo[a]phenazinones has been developed under SSMR condition via intramolecular domino Knoevenagel-hetero-Diels-Alder reaction involving the generation of two new six membered fused rings and three contiguous stereogenic centers.
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Affiliation(s)
- Manickam Bakthadoss
- Department of Chemistry, Pondicherry University, Pondicherry, 605 014, India.
| | - Varathan Vinayagam
- Department of Chemistry, Pondicherry University, Pondicherry, 605 014, India
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5
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Yan J, Luo H, Chen Z, Wei Y, Zhan H, Mei Y. Lewis acid-catalyzed cyclodimerization of 1-substituted-3-arylvinylindoles leading to highly functionalized fused cyclopenta[b]indoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Okabe A, Harada S, Takeda T, Nishida A. One-Pot Synthesis of Cycloocta[b
]indole Through Formal [5+3] Cycloaddition Using Donor-Acceptor Cyclopropanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900610] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Akito Okabe
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
| | - Shinji Harada
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
- Molecular Chirality Research Center; Chiba University; 1-33 Yayoi-cho, Inage-ku 263-8522 Chiba Japan
| | - Takuya Takeda
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
| | - Atsushi Nishida
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
- Molecular Chirality Research Center; Chiba University; 1-33 Yayoi-cho, Inage-ku 263-8522 Chiba Japan
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7
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An Easy Access to Bipyrazoles and Unusual Demethylation of Methyl Phosphorous Ester: Exploring the Synthetic Utility of Bestmann-Ohira Reagent. ChemistrySelect 2017. [DOI: 10.1002/slct.201700239] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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8
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Chen J, Han X, Lu X. Atom-Economic Synthesis of Pentaleno[2,1-b]indoles via Tandem Cyclization of Alkynones Initiated by Aminopalladation. J Org Chem 2017; 82:1977-1985. [DOI: 10.1021/acs.joc.6b02817] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junjie Chen
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiuling Han
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiyan Lu
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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9
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Affiliation(s)
- Igor V. Trushkov
- Department of Chemistry; M. V. Lomonosov Moscow State University; Leninskie Gory 1-3 Moscow 119991 Russia
- Federal Research Center of Pediatric Hematology, Oncology and Immunology n.a. Dmitry Rogachev; Samory Mashela 1 Moscow 117997 Russia
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10
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Villemson EV, Budynina EM, Ivanova OA, Skvortsov DA, Trushkov IV, Melnikov MY. Concise approach to pyrrolizino[1,2-b]indoles from indole-derived donor–acceptor cyclopropanes. RSC Adv 2016. [DOI: 10.1039/c6ra11233a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A direct approach to previously unexplored pyrrolizidino[1,2-b]indole system from indole-derived donor–acceptor cyclopropanes based on a sequence of three synthetic steps was developed.
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Affiliation(s)
- Elena V. Villemson
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Ekaterina M. Budynina
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
| | - Olga A. Ivanova
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Dmitriy A. Skvortsov
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Igor V. Trushkov
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Mikhail Ya. Melnikov
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
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11
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Zagranyarski Y, Skabeev A, Ma Y, Müllen K, Li C. Facile synthesis of annulated heterocyclic benzo[kl]acridine derivatives via one-pot N–H/C–H coupling. Org Chem Front 2016. [DOI: 10.1039/c6qo00371k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A facile and efficient synthesis of benzo[kl]acridines was developed based on a domino reaction via a combinatorial catalyst approach.
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Affiliation(s)
- Yulian Zagranyarski
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
- Faculty of Chemistry and Pharmacy
- Sofia University ‘St. Kliment Ohridski’
| | - Artem Skabeev
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | - Yingjie Ma
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
- Institute of Physical Chemistry
- Johannes Gutenberg University Mainz
| | - Chen Li
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
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12
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Manisha M, Dhiman S, Mathew J, Ramasastry SSV. One-pot relay catalysis: divergent synthesis of furo[3,4-b]indoles and cyclopenta[b]indoles from 3-(2-aminophenyl)-1,4-enynols. Org Biomol Chem 2016; 14:5563-8. [DOI: 10.1039/c6ob00319b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Described herein a divergent strategy for the synthesis of furo[3,4-b]indoles via a sequential Ag(i)/Bi(iii)/Pd(ii) catalysis and cyclopenta[b]indoles via a one-pot Ag(i)/Brønsted acid relay catalysis, starting from the easily accessible 3-(2 aminophenyl)-4-pentenyn-3-ols.
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Affiliation(s)
- Manisha Manisha
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - Seema Dhiman
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - Jopaul Mathew
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
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13
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Dhiman S, Ramasastry SSV. One-Pot Relay Gold(I) and Brønsted Acid Catalysis: Cyclopenta[b]annulation of Indoles via Hydroamination/Nazarov-Type Cyclization Cascade of Enynols. Org Lett 2015; 17:5116-9. [DOI: 10.1021/acs.orglett.5b02632] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seema Dhiman
- Organic Synthesis and Catalysis
Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Manuali PO, Punjab 140306, India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis
Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Manuali PO, Punjab 140306, India
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14
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A Straightforward Approach to Tetrahydroindolo[3,2-b]carbazoles and 1-Indolyltetrahydrocarbazoles through [3+3] Cyclodimerization of Indole-Derived Cyclopropanes. Chemistry 2015; 22:1223-7. [DOI: 10.1002/chem.201502287] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Indexed: 11/07/2022]
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15
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Dhiman S, Ramasastry SSV. Synthesis of polysubstituted cyclopenta[b]indoles via relay gold(i)/Brønsted acid catalysis. Chem Commun (Camb) 2015; 51:557-60. [DOI: 10.1039/c4cc08174a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A relay gold(i)/Brønsted acid catalyzed one-pot cyclopentannulation of indoles has been achieved starting from easily accessible 1-(2-aminophenyl)prop-2-ynols and readily available 1,3-dicarbonyls.
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Affiliation(s)
- Seema Dhiman
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- S. A. S. Nagar
- India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- S. A. S. Nagar
- India
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16
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Singh TP, Khan R, Noh YR, Lee SG, Singh OM. Indium(III) Chloride Mediated Michael Addition of Indoles to Ketene S,S-Acetals: Synthesis of Bis- and Tris-indolylketones. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.10.2950] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Highly stereo and chemoselective synthesis of tetra and pentacyclic frameworks using Solid-State Melt Reaction (SSMR). Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.126] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Synthesis of fused-tricyclic indole derivatives through an acid-promoted skeletal rearrangement. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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19
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Liu B, Li XF, Zhang J, Wang MT, Zeng RJ. Synthesis of novel spiro[cyclopropane-pyrrolizin] derivatives via Mg-mediated conjugate addition of bromoform. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1350-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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One-pot straightforward approach to 2,3-disubstituted benzo/naphtho[b]furans via domino annulation of α-oxoketene dithioacetals and 1,4-benzo/naphthoquinone mediated by AlCl3 at room temperature. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.128] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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21
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Abstract
Ketene dithioacetals are versatile intermediates in organic synthesis. Extensive research, since the last decade, has given rise to new prospects in their chemistry. The objective of this review is twofold: first, to highlight the new prospects in the chemistry of functionalized ketene dithioacetals, and second, to provide an intrinsic link between ketene dithioacetal groups and a variety of other functional groups, which has brought out many new facts that will assist in future designs.
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Affiliation(s)
- Ling Pan
- Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
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22
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Yokosaka T, Nakayama H, Nemoto T, Hamada Y. Acid-promoted Cascade Cyclization to Produce Fused-polycyclic Indole Derivatives. Org Lett 2013; 15:2978-81. [DOI: 10.1021/ol401128h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Takuya Yokosaka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba, 260-8675, Japan
| | - Hiroki Nakayama
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba, 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba, 260-8675, Japan
| | - Yasumasa Hamada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba, 260-8675, Japan
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23
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Kumar S, Pratap R, Kumar A, Kumar B, Tandon VK, Ram VJ. Direct alkenylation of indolin-2-ones by 6-aryl-4-methylthio-2H-pyran-2-one-3-carbonitriles: a novel approach. Beilstein J Org Chem 2013; 9:809-17. [PMID: 23766794 PMCID: PMC3678717 DOI: 10.3762/bjoc.9.92] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 04/02/2013] [Indexed: 12/29/2022] Open
Abstract
A direct one-pot base-induced alkenylation of indolin-2-ones has been developed by using 6-aryl-4-methylthio-2H-pyran-2-one-3-carbonitriles. Different bases such as MeONa, NaH and t-BuONa have been used to optimize the reaction conditions to obtain the desired product. NaH in THF was found to be the most suitable for the alkenylation of indolin-2-ones. Reaction in the presence of other bases led to the formation of 1-aryl-3-methoxy/methylthio-5H-dibenzo[d,f][1,3]diazepin-6(7H)-ones. Quantum chemical calculations have been performed to explain the nature of the weak noncovalent interactions operating in the supramolecular architectures of alkenylated indoline-2-ones and to explain the relative stability of one of the tautomers with respect to the others.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry, University of Lucknow, Lucknow-226007, India
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24
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Parmar NJ, Patel RA, Parmar BD, Talpada NP. An efficient domino reaction in ionic liquid: Synthesis and biological evaluation of some pyrano- and thiopyrano-fused heterocycles. Bioorg Med Chem Lett 2013; 23:1656-61. [DOI: 10.1016/j.bmcl.2013.01.079] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 01/05/2013] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
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25
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Wang L, He W, Yu Z. Transition-metal mediated carbon–sulfur bond activation and transformations. Chem Soc Rev 2013; 42:599-621. [DOI: 10.1039/c2cs35323g] [Citation(s) in RCA: 445] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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26
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Vijay Kumar S, Saraiah B, Misra NC, Ila H. Synthesis of 2-Phenyl-4,5-Substituted Oxazoles by Copper-Catalyzed Intramolecular Cyclization of Functionalized Enamides. J Org Chem 2012; 77:10752-63. [DOI: 10.1021/jo3021192] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- S. Vijay Kumar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur,
Bangalore-560064, Karnataka, India
| | - B. Saraiah
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur,
Bangalore-560064, Karnataka, India
| | - N. C. Misra
- Department of Chemistry, Indian Institute of Technology, Kanpur-208016, Uttar
Pradesh, India
| | - H. Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur,
Bangalore-560064, Karnataka, India
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27
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Parmar NJ, Patel RA, Teraiya SB, Sharma D, Gupta VK. Catalyst-and solvent-free one-pot synthesis of some novel polyheterocycles from aryldiazenyl salicylaldehyde derivatives. RSC Adv 2012. [DOI: 10.1039/c2ra00930g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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28
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Verma RK, Verma GK, Shukla G, Singh MS. InCl3 catalyzed domino route to 2H-chromene-2-ones via [4 + 2] annulation of 2-hydroxyarylaldehydes with α-oxoketene dithioacetal under solvent-free conditions. RSC Adv 2012. [DOI: 10.1039/c2ra00987k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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29
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Tokuyama H, Okano K, Yoshii Y. Synthetic Studies on Paspaline: Lewis Acid-Mediated Sequential Construction of A-E Ring Skeleton. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)67] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Ivanova OA, Budynina EM, Chagarovskiy AO, Rakhmankulov ER, Trushkov IV, Semeykin AV, Shimanovskii NL, Melnikov MY. Domino Cyclodimerization of Indole-Derived Donor-Acceptor Cyclopropanes: One-Step Construction of the Pentaleno[1,6-a,b]indole Skeleton. Chemistry 2011; 17:11738-42. [DOI: 10.1002/chem.201101687] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Indexed: 01/15/2023]
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31
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Jin W, Du W, Yang Q, Yu H, Chen J, Yu Z. Regio- and Stereoselective Synthesis of Multisubstituted Olefins and Conjugate Dienes by Using α-Oxo Ketene Dithioacetals as the Building Blocks. Org Lett 2011; 13:4272-5. [DOI: 10.1021/ol201620g] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Weiwei Jin
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian, Liaoning 116023, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 354 Fenglin Road, Shanghai 200032, China
| | - Wangming Du
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian, Liaoning 116023, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 354 Fenglin Road, Shanghai 200032, China
| | - Qin Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian, Liaoning 116023, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 354 Fenglin Road, Shanghai 200032, China
| | - Haifeng Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian, Liaoning 116023, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 354 Fenglin Road, Shanghai 200032, China
| | - Jiping Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian, Liaoning 116023, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 354 Fenglin Road, Shanghai 200032, China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 457 Zhongshan Road, Dalian, Liaoning 116023, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 354 Fenglin Road, Shanghai 200032, China
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Amareshwar V, Mishra NC, Ila H. 2-Phenyl-4-bis(methylthio)methyleneoxazol-5-one: versatile template for diversity oriented synthesis of heterocycles. Org Biomol Chem 2011; 9:5793-801. [DOI: 10.1039/c1ob05495c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Vijayalaxmi Amareshwar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
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Misra NC, Ila H. 4-Bis(methylthio)methylene-2-phenyloxazol-5-one: Versatile Template for Synthesis of 2-Phenyl-4,5-functionalized Oxazoles. J Org Chem 2010; 75:5195-202. [DOI: 10.1021/jo100941f] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nimesh C. Misra
- Department of Chemistry, Indian Institute of Technology, Kanpur-208 016, India
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560 064, India
| | - H. Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560 064, India
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Kim CJ, Lim WT, Rhee YH. Gold(I)-catalyzed Cycloisomerization of the Mixed N,S-acetals Generated from Homopropargylic Amines; Mechanistic Implication for the Formal Alkyne Prins Reaction. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.6.1465] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bakthadoss M, Sivakumar G, Kannan D. Solid-State Melt Reaction for the Domino Process: Highly Efficient Synthesis of Fused Tetracyclic Chromenopyran Pyrimidinediones Using Baylis−Hillman Derivatives. Org Lett 2009; 11:4466-9. [DOI: 10.1021/ol901228j] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Manickam Bakthadoss
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamilnadu, India
| | - Govindan Sivakumar
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamilnadu, India
| | - Damodharan Kannan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamilnadu, India
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36
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Kumar S, Ila H, Junjappa H. Efficient Routes to Pyrazolo[3,4-b]indoles and Pyrazolo[1,5-a]benzimidazoles via Palladium- and Copper-Catalyzed Intramolecular C−C and C−N Bond Formation. J Org Chem 2009; 74:7046-51. [DOI: 10.1021/jo901309t] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sarvesh Kumar
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Hiriyakkanavar Ila
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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37
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Singh PP, Yadav AK, Ila H, Junjappa H. Novel Route to 2,3-Substituted Benzo[b]thiophenes via Intramolecular Radical Cyclization. J Org Chem 2009; 74:5496-501. [DOI: 10.1021/jo900615p] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Prabal P. Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur-208016, India
| | - A. K. Yadav
- Department of Chemistry, Indian Institute of Technology, Kanpur-208016, India
| | - H. Ila
- Department of Chemistry, Indian Institute of Technology, Kanpur-208016, India
| | - H. Junjappa
- Department of Chemistry, Indian Institute of Technology, Kanpur-208016, India
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Gataullin RR. Synthesis of compounds containing a cycloalka[b]indole fragment. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009030014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yu H, Yu Z. Direct Alkenylation of Indoles with α-Oxo Ketene Dithioacetals: Efficient Synthesis of Indole Alkaloids Meridianin Derivatives. Angew Chem Int Ed Engl 2009; 48:2929-33. [DOI: 10.1002/anie.200900278] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Yu H, Yu Z. Direct Alkenylation of Indoles with α-Oxo Ketene Dithioacetals: Efficient Synthesis of Indole Alkaloids Meridianin Derivatives. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200900278] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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