LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 9 of total 9

Search options

  1. Article ; Online: Copper-catalyzed dehydrogenative cyclization/alkenylation towards dihydroquinolinones.

    Pari, Keerthana / Fazlur-Rahman, Nawaz Khan

    Organic & biomolecular chemistry

    2024  

    Abstract: An efficient copper-catalyzed one-pot sequential synthesis of alkenylated quinolinyl dihydroquinolinones is reported, utilizing ketones, 1,3-cyclohexanediones, and benzyl ... ...

    Abstract An efficient copper-catalyzed one-pot sequential synthesis of alkenylated quinolinyl dihydroquinolinones is reported, utilizing ketones, 1,3-cyclohexanediones, and benzyl alcohols
    Language English
    Publishing date 2024-05-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d4ob00134f
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article ; Online: Choline Chloride-Based Deep Eutectic Systems in Sequential Friedländer Reaction and Palladium-Catalyzed sp3 CH Functionalization of Methyl Ketones

    Chitrala Teja / Fazlur Rahman Nawaz Khan

    ACS Omega, Vol 4, Iss 5, Pp 8046-

    2019  Volume 8055

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2019-05-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article: Water mediated catalyst-free efficient domino synthesis of 9-(quinolin-2(1H)-one)-xanthene-1,8(5H,9H)-diones using parallel synthesizer

    Krishnakumar, Varadhan / Badal Kumar Mandal / Euh Duck Jeong / Fazlur-Rahman Nawaz Khan

    Tetrahedron letters. 2014 July 02, v. 55, no. 27

    2014  

    Abstract: A facile and efficient method for the preparation of 3,4,6,7-tetrahydro-9-(1,2-dihydro-2-oxoquinolin-3-yl)-2H-xanthene-1,8(5H,9H)-diones from substituted 2-chloro-3-formylquinoline and 1,3-cyclohexanedione or dimedone in water at 90°C using parallel ... ...

    Abstract A facile and efficient method for the preparation of 3,4,6,7-tetrahydro-9-(1,2-dihydro-2-oxoquinolin-3-yl)-2H-xanthene-1,8(5H,9H)-diones from substituted 2-chloro-3-formylquinoline and 1,3-cyclohexanedione or dimedone in water at 90°C using parallel synthesizer is reported. The present methodology offers a tandem-cascade methodology, high yield, and operational simplicity.
    Keywords chemical reactions ; chemical structure ; organic compounds
    Language English
    Dates of publication 2014-0702
    Size p. 3717-3720.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2014.05.015
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article: Regioselective synthesis of 3,4,6,7-tetrahydro-3,3-dimethyl-9-phenyl-2H-xanthene-1,8(5H,9H)-diones through ascorbic acid catalyzed three-component domino reaction

    Napoleon, Ayyakannu Arumugam / Euh Duck Jeong / Eun Hyuk Chung / Fazlur-Rahman Nawaz Khan

    Tetrahedron letters. 2014 Oct. 08, v. 55, no. 41

    2014  

    Abstract: An efficient, three-component domino reaction of dimedone 1, aromatic aldehydes (2a–o), and 1,3-cyclohexanedione 1a in the regio-selective synthesis of 3,3-dimethyl-9-phenyl-2H-xanthene-1,8(5H,9H)-diones (3a–o) is reported. The desired product, 3 is ... ...

    Abstract An efficient, three-component domino reaction of dimedone 1, aromatic aldehydes (2a–o), and 1,3-cyclohexanedione 1a in the regio-selective synthesis of 3,3-dimethyl-9-phenyl-2H-xanthene-1,8(5H,9H)-diones (3a–o) is reported. The desired product, 3 is efficiently promoted by ascorbic acid as an organo catalyst.
    Keywords aldehydes ; ascorbic acid ; catalysts ; chemical reactions ; chemical structure ; regioselectivity
    Language English
    Dates of publication 2014-1008
    Size p. 5656-5659.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2014.08.040
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  5. Article: Efficient one pot multi-component domino Aldol condensation–Michael addition–Suzuki coupling reaction for the highly functionalized quinolines

    Ubba, Eethamukkala / C. Dasaradhan / Euh Duck Jeong / Eun Hyuk Chung / Fazlur-Rahman Nawaz Khan / Y. Suneel Kumar

    Tetrahedron letters. 2015 Aug. 12, v. 56, no. 33

    2015  

    Abstract: A parallel and advantageous multi-component one pot reaction has been developed utilizing domino Aldol condensation–Michael addition–Suzuki coupling approach for a variety of 2,3-disubstituted highly functionalized quinolines. The domino reactions of 2- ... ...

    Abstract A parallel and advantageous multi-component one pot reaction has been developed utilizing domino Aldol condensation–Michael addition–Suzuki coupling approach for a variety of 2,3-disubstituted highly functionalized quinolines. The domino reactions of 2-chloro-3-formylquinolines, 1 acetophenones, 2 and distinctive boronic acids, 3 were carried out utilizing PdCl2(PPh3)2/tripotassium phosphate/ethanol–water system. At 80°C they gave diversified functionalized quinolines in good yields.
    Keywords acetophenones ; boronic acids ; chemical reactions ; chemical structure ; quinolines
    Language English
    Dates of publication 2015-0812
    Size p. 4744-4748.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2015.06.040
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article: Efficient copper-free Pd(OAc)2/Ruphos-catalyzed Sonogashira coupling in the preparation of 3′-hydroxycorfin and gymnopalynes A analogues

    Dasaradhan, Changalaraya / Euh Duck Jeong / Eun Hyuk Chung / Fazlur-Rahman Nawaz Khan / Yadavalli Suneel Kumar

    Tetrahedron letters. 2015 Jan. 01, v. 56, no. 1

    2015  

    Abstract: An efficient method involving copper-free Pd(OAc)2/Ruphos-catalyzed Sonogashira coupling strategy for a variety of 3-alkynyl isochromen-1-ones has been developed. Sonogashira coupling in the presence of catalytic system—Pd(OAc)2/Ruphos, Et3N base, and ... ...

    Abstract An efficient method involving copper-free Pd(OAc)2/Ruphos-catalyzed Sonogashira coupling strategy for a variety of 3-alkynyl isochromen-1-ones has been developed. Sonogashira coupling in the presence of catalytic system—Pd(OAc)2/Ruphos, Et3N base, and tetrahydrofuran solvent under aqueous and room temperature conditions, provided novel 3-(alkynyl)-1H-isochromen-1-ones in excellent yields. The methodology has also been extended toward natural isochromen-1-one–3′-hydroxycorfin and gymnopalynes A analogues.
    Keywords ambient temperature ; chemical reactions ; chemical structure ; solvents ; tetrahydrofuran ; trimethylamine
    Language English
    Dates of publication 2015-0101
    Size p. 187-191.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2014.11.059
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  7. Article: Efficient and convenient copper-free Pd(OAc)2/Ruphos-catalyzed Sonogashira coupling in the preparation of corfin analogues

    Dasaradhan, Changalaraya / Euh Duck Jeong / Eun Hyuk Chung / Fazlur-Rahman Nawaz Khan / Kamalakannan Prabakaran / Yadavalli Suneel Kumar

    Tetrahedron letters. 2015 Feb. 04, v. 56, no. 6

    2015  

    Abstract: The Sonogashira coupling reaction of 3-chloro-1H-isochromen-1-one and terminal alkynes, in the presence of catalytic system-Pd(OAc)2/Ruphos, Et3N base, and tetrahydrofuran solvent under aqueous conditions, provided novel 3-(alkynyl)-1H-isochromen-1-ones ... ...

    Abstract The Sonogashira coupling reaction of 3-chloro-1H-isochromen-1-one and terminal alkynes, in the presence of catalytic system-Pd(OAc)2/Ruphos, Et3N base, and tetrahydrofuran solvent under aqueous conditions, provided novel 3-(alkynyl)-1H-isochromen-1-ones in excellent yields. The methodology has also been extended toward natural isochromen-1-ones—corfin analogues.
    Keywords alkynes ; chemical reactions ; chemical structure ; solvents ; tetrahydrofuran ; trimethylamine
    Language English
    Dates of publication 2015-0204
    Size p. 784-788.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2014.12.059
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article ; Online: Zinc Oxide Nanoparticles Catalyzed Condensation Reaction of Isocoumarins and 1,7-Heptadiamine in the Formation of Bis-Isoquinolinones

    Varadhan Krishnakumar / Kesarla Mohan Kumar / Badal Kumar Mandal / Fazlur-Rahman Nawaz Khan

    The Scientific World Journal, Vol

    2012  Volume 2012

    Abstract: The diversified bis-isoquinolinones were obtained in two steps, utilizing homophthalic acid and various acid chlorides providing 3-substituted isocoumarins in the first step which on further condensation with 1,7-heptadiamine involving C–N bond formation ...

    Abstract The diversified bis-isoquinolinones were obtained in two steps, utilizing homophthalic acid and various acid chlorides providing 3-substituted isocoumarins in the first step which on further condensation with 1,7-heptadiamine involving C–N bond formation from the lactone in the presence of 10 mol% zinc oxide nanoparticles (ZnO NPs) (<150 nm) afforded the desired bis-isoquinolinones in high yield and purity. The synthesized compounds were then characterized using FTIR, 1H NMR, 13C NMR, and HRMS techniques.
    Keywords Technology ; T ; Medicine ; R ; Science ; Q
    Language English
    Publishing date 2012-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  9. Article: Palladium catalyzed Suzuki Miyaura cross coupling of 3-chloroisochromen-1-one: synthesis of glomellin and reticulol analogues

    Kumar, Yadavalli Suneel / Changalaraya Dasaradhan / Euh Duck Jeong / Eun Hyuk Chung / Fazlur-Rahman Nawaz Khan / Kamalakannan Prabakaran / Pitchai Manivel

    Tetrahedron letters. 2015 Feb. 11, v. 56, no. 7

    2015  

    Abstract: A facile protocol has been developed for a series of 3-substituted isochromen-1-ones utilizing Suzuki coupling strategy. The reaction of 3-chloroisochromen-1one, 1 with different boronic acids utilizing PdCl2(PPh3)2-Ruphos catalytic system gave ... ...

    Abstract A facile protocol has been developed for a series of 3-substituted isochromen-1-ones utilizing Suzuki coupling strategy. The reaction of 3-chloroisochromen-1one, 1 with different boronic acids utilizing PdCl2(PPh3)2-Ruphos catalytic system gave diversified 3-substituted isochromen-1-ones in excellent yields. The methodology has been utilized in the synthesis of glomellin and reticulol analogues.
    Keywords boronic acids ; catalytic activity ; chemical structure ; organic compounds ; palladium ; protocols ; Suzuki reaction
    Language English
    Dates of publication 2015-0211
    Size p. 941-945.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2014.12.114
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top