Log in

Relevant bibliographies by topics / Ketene-imine reaction / Journal articles

To see the other types of publications on this topic, follow the link: Ketene-imine reaction.

Journal articles on the topic 'Ketene-imine reaction'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Ketene-imine reaction.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Domingo, Luis R., Mar Ríos-Gutiérrez, and José A. Sáez. "Unravelling the mechanism of the ketene-imine Staudinger reaction. An ELF quantum topological analysis." RSC Advances 5, no. 47 (2015): 37119–29. http://dx.doi.org/10.1039/c5ra03438h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Filatov, Vadim, Maksim Kukushkin, Juliana Kuznetsova, et al. "Synthesis of 1,3-diaryl-spiro[azetidine-2,3′-indoline]-2′,4-diones via the Staudinger reaction: cis- or trans-diastereoselectivity with different addition modes." RSC Advances 10, no. 24 (2020): 14122–33. http://dx.doi.org/10.1039/d0ra02374d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Mukerjee, Arya K., Gangadhar J. Sanjayan, and Krishnan Ravikumar. "Reaction of methylphthalimidoketene with benzylidene- and cinnamylideneanilines: structure and configuration of the products." Canadian Journal of Chemistry 73, no. 4 (1995): 614–17. http://dx.doi.org/10.1139/v95-079.

Full text

Abstract:

Methylphthalimidoketene reacts with cinnamylideneanilines to give tetrahydrooxazin-6-ones exclusively, whereas with benzylideneaniline it also forms β-lactam. Configurations are based on X-ray studies. Keywords: β-lactam, tetrahydro-1,3-oxazin-5-ones, ketene–imine reactions, cycloaddition of methylphthalimidoketene, 3-phthaloylamino-3-methylazetidin-2-one.

APA, Harvard, Vancouver, ISO, and other styles

4

Zarei, Maaroof. "One-step Synthesis of β-lactams Using Cyanuric Fluoride". Journal of Chemical Research 37, № 1 (2013): 25–27. http://dx.doi.org/10.3184/174751912x13545429290478.

Full text

Abstract:

Cyanuric fluoride works as an efficient acid activator reagent for the direct [2+2] ketene–imine cycloaddition of substituted acetic acids and imines in a one-pot synthesis under mild conditions. The yields are good to excellent and the reaction conditions are mild, simple and efficient.

APA, Harvard, Vancouver, ISO, and other styles

5

Yadav, Ram Naresh, Ashok Kumar Srivastava та Bimal Krishna Banik. "Microwave-Induced Bismuth Nitrate-Catalyzed Michael Reaction of 3-Amino β-Lactams with Enones". Asian Journal of Chemistry 32, № 2 (2019): 233–36. http://dx.doi.org/10.14233/ajchem.2020.22168.

Full text

Abstract:

Microwave-induced bismuth nitrate-catalyzed reaction of 3-amino β-lactams with unsaturated ketones is performed in order to obtain substituted amino β-lactams. Amino β-lactams were obtained through the strategy of [2+2] ketene-imine cycloaddition followed by deprotection of phthalimido β-lactams with ethylene diamine.

APA, Harvard, Vancouver, ISO, and other styles

6

Assfeld, X., J. A. Sordo, J. González, M. F. Ruiz-López, and T. L. Sordo. "Electrostatic solvent effect on the ketene-imine cycloaddition reaction." Journal of Molecular Structure: THEOCHEM 287 (November 1993): 193–99. http://dx.doi.org/10.1016/0166-1280(93)87222-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Yoshimura, Fumihiko, Hiroki Saito, Taiki Abe, and Keiji Tanino. "Nucleophilic Addition of Alkanenitriles to Aldehydes via N-Silyl Ketene Imines Generated In Situ." Synlett 28, no. 14 (2017): 1816–20. http://dx.doi.org/10.1055/s-0036-1588424.

Full text

Abstract:

Upon treatment with triisopropylsilyl trifluoromethanesulfonate and 2,2,6,6-tetramethylpiperidine, alkanenitriles undergo direct addition to aldehydes under mild non-basic neutral conditions to provide triisopropylsilyl ethers of β-hydroxy nitriles in good yield. The reaction proceeds through generation of an N-silyl ketene imine intermediate in situ from the alkanenitrile followed by nucleophilic addition of the intermediate to the aldehyde.

APA, Harvard, Vancouver, ISO, and other styles

8

Palomo, Claudio, Jesus M. Aizpurua, Iñaki Ganboa та Mikel Oiarbide. "Asymmetric Synthesis of β-Lactams by Staudinger Ketene-Imine Cycloaddition Reaction". European Journal of Organic Chemistry 1999, № 12 (1999): 3223–35. http://dx.doi.org/10.1002/(sici)1099-0690(199912)1999:12<3223::aid-ejoc3223>3.0.co;2-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Fabio, Romano Di, Giuseppe Alvaro, Barbara Bertani, and Simone Giacobbe. "Straightforward synthesis of new tetrahydroquinoline derivatives." Canadian Journal of Chemistry 78, no. 6 (2000): 809–15. http://dx.doi.org/10.1139/v00-079.

Full text

Abstract:

To identify novel classes of glycine antagonists, compounds potentially useful as neuroprotective after stroke, novel substituted tetrahydroquinoline derivatives, satisfying the key pharmacophoric requirements for glycine antagonists, were designed. To explore the SAR of these compounds an efficient synthetic route was set up exploiting the outstanding reactivity of suitable N-aryl imine derivatives. In particular an allylmetalation reaction or the addition of bis(trimethyldisilyl)ketene acetals allowed the preparation of versatile intermediates which were smoothly transformed into the desired

APA, Harvard, Vancouver, ISO, and other styles

10

Sordo, J. A., Javier Gonzalez, and T. L. Sordo. "An ab initio study on the mechanism of the ketene-imine cycloaddition reaction." Journal of the American Chemical Society 114, no. 15 (1992): 6249–51. http://dx.doi.org/10.1021/ja00041a055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Nagao, Yoshimitsu, Toshio Kumagai, Sachiko Takao, et al. "New methylseleno-promoted ketene-imine cycloaddition reaction. A simplified stereoselective synthesis of penam." Journal of Organic Chemistry 51, no. 24 (1986): 4737–39. http://dx.doi.org/10.1021/jo00374a051.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Palomo, Claudio, та Jesus Maria Aizpurua. "Asymmetric synthesis of 3-amino-β-lactamsvia Staudinger ketene-imine cycloaddition reaction (review)". Chemistry of Heterocyclic Compounds 34, № 11 (1998): 1222–36. http://dx.doi.org/10.1007/bf02256803.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Palomo, Claudio, Jesus M. Aizpurua, Inaki Ganboa та Mikel Oiarbide. "ChemInform Abstract: Asymmetric Synthesis of β-Lactams by Staudinger Ketene-Imine Cycloaddition Reaction". ChemInform 31, № 6 (2010): no. http://dx.doi.org/10.1002/chin.200006261.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

M, Heravi; Majid, A. Rezvanian, and F. Alinaghian. "Metal-Free Assemblage of Four C−N and Two C−C Bonds via a Cascade Five Component Diastereoselective Synthesis of Pyrido[1,2-a]Pyrimidines." ChemistrySelect 3, no. 41 (2018): 11565–68. https://doi.org/10.1002/slct.201802481.

Full text

Abstract:

An efficient heteroannulation synthesis of N-fused, pyrido[1,2-a]pyrimidines was successfully achieved via a sequential, one-pot five-component reaction, involving primary amines, diketene (DK), differently substituted aromatic aldehydes, nitro ketene dithioacetal and propanediamine in ethanol at 70 °C. This new protocol constructs two rings through the formation of four C–N and two C–C bonds via a one pot sequential reaction involving ring-opening/ Knoevenagel condensation, /nucleophilic substitution (SN)/ Michael addition followed by imine−enamine tautomerization and fi

APA, Harvard, Vancouver, ISO, and other styles

15

Lu, Nan, Chengxia Miao та Xiaozheng Lan. "Theoretical investigation on diastereoselective [2+2] cycloaddition and Pd-catalyzed enantioselective [3+2] cycloaddition for synthesis of cis-β-lactam and exo-furobenzopyranone". Thermal Science and Engineering 7, № 1 (2024): 5949. http://dx.doi.org/10.24294/tse.v7i1.5949.

Full text

Abstract:

The mechanism is investigated for Wolff rearrangement/Staudinger [2+2] cycloaddition cascade and Pd-catalyzed, decarboxylative, formal [3+2] cycloaddition. Wolff rearrangement of 3-diazotetramic acid is determined to be rate-limiting step generates cyclic acyl ketene. The interaction of ketene with imine firstly results in zwitterion followed by conrotatory cyclization giving major cis-β-lactam. For synthesis of s-VECs, the epoxidation−cyclization cascade and hydrolysis give precursor of better performing exocyclic derivative. The reaction with 3-cyanochromone includes decarboxylation, nucleop

APA, Harvard, Vancouver, ISO, and other styles

16

Ram, Naresh Yadav, Banik Indrani та Krishna Banik Bimal. "Microwave-assisted novel stereoselective synthesis of bis-β-lactams with 2,7-phenanthrenyl imines". Journal of Indian Chemical Society Vol. 95, Nov 2018 (2018): 1377–80. https://doi.org/10.5281/zenodo.5652757.

Full text

Abstract:

Department of Chemistry, Faculty of Engineering & Technology, Veer Bahadur Singh Purvanchal University, Jaunpur-222 003, Uttar Pradesh, India Department of Chemistry, University of Texas-Pan American,1201 W. University Dr., Edinburg, TX 78539, USA The University of Texas M. D. Anderson Cancer Center, Department of Molecular Pathology, 1515 Holcombe Blvd, Houston, TX 77030, USA Community Health System of South Texas, 3135 South Sugar Road, Edinburg, TX 78539, USA E-mail: bimalbanik10@gmail.com, bimal.banik@chsst.org <em>Manuscript received 01 October 2018, accepted 02 November 2018</em> Mic

APA, Harvard, Vancouver, ISO, and other styles

17

Fujisawa, Tamotsu, Akinori Shibuya, Daisuke Sato та Makoto Shimizu. "Stereoselective Synthesis of Monocyclic β-Lactam Related to a Carmonam Precursor via Ketene-Imine Reaction". Synlett 1995, № 10 (1995): 1067–68. http://dx.doi.org/10.1055/s-1995-5187.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Cossío, Fernando P., Ana Arrieta, and Miguel A. Sierra. "The Mechanism of the Ketene−Imine (Staudinger) Reaction in Its Centennial: Still an Unsolved Problem?" Accounts of Chemical Research 41, no. 8 (2008): 925–36. http://dx.doi.org/10.1021/ar800033j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Palomo, Claudio, та Jesus Maria Aizpurua. "ChemInform Abstract: Asymmetric Synthesis of 3-Amino-β-lactams via Staudinger Ketene-Imine Cycloaddition Reaction". ChemInform 30, № 16 (2010): no. http://dx.doi.org/10.1002/chin.199916305.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Ram, Naresh Yadav, Kumar Singh Amarendra, Banik Indrani та Krishna Banik Bimal. "Microwave-induced stereospecific synthesis of trans 3-phenylthio β-lactams". Journal of Indian Chemical Society Vol. 96, Oct 2019 (2019): 1359–63. https://doi.org/10.5281/zenodo.5642753.

Full text

Abstract:

Department of Chemistry, Faculty of Engineering and Technology, Veer Bahadur Singh Purvanchal University, Jaunpur-222 003, Uttar Pradesh India Department of Chemistry, University of Texas-Pan American, 1201 W. University Dr., Edinburg, TX 78539, USA The University of Texas-M. D. Anderson Cancer Center, Department of Molecular Pathology, 1515 Holcombe Blvd, Houston, TX 77030, USA Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Prince Mohammad Bin Fahd University, Al Khobar, Kingdom of Saudi Arabia <em>E-mail:</em> bimalbanik10@gmail.com; bbanik@pmu.edu.sa

APA, Harvard, Vancouver, ISO, and other styles

21

Hosseini, Fahimeh S., and Mohammad Bayat. "Synthesis of New 5-amino-7-(aryl)-1,2,3,7-tetrahydro-8-nitroimidazo[1,2-a]pyridine- 6-carboxamide and 6-amino-2,3,4,8-tetrahydro-9-nitro-8-(aryl)-1H-pyrido[1,2- a]pyrimidine-7-carboxamide Derivatives." Current Organic Synthesis 15, no. 7 (2018): 982–88. http://dx.doi.org/10.2174/1570179415666180709121950.

Full text

Abstract:

Aim and Objectives: Development of simple synthetic routes for widely used organic compounds from readily available reagents is one of the major tasks in organic chemistry. Therefore, new approaches for increasing the molecular diversity of simple starting materials, are needed. Herein, an efficient synthesis of imidazo[1,2-a]pyridine, pyrido[1,2-a]pyrimidine and pyrido[1,2-a][1,3]diazepine derivatives is described. Materials and Methods: A one-pot, multi-component reaction of nitro ketene aminal derived from the addition of various 1,n-diamines to 1,1-bis(methylthio)-2-nitroethene with cyanoa

APA, Harvard, Vancouver, ISO, and other styles

22

del Pozo, Carlos, Alberto Macías, Fernando López-Ortiz, Miguel Ángel Maestro, Eduardo Alonso та Javier González. "Diastereo- and Enantioselective Synthesis of Novelβ-Lactam-Containing 1,4-Benzodiazepines through a Ketene−Imine Cycloaddition Reaction". European Journal of Organic Chemistry 2004, № 3 (2004): 535–45. http://dx.doi.org/10.1002/ejoc.200300447.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Hassan, Sangar A., Media N. Abdullah та Dara M. Aziz. "Synthesis of New Series Bis-3-Chloro-β-Lactam Derivatives from Symmetrical Bis-Schiff Bases as Effective Antimicrobial Agents with Molecular Docking Studies". Science Journal of University of Zakho 9, № 3 (2021): 128–37. http://dx.doi.org/10.25271/sjuoz.2021.9.3.830.

Full text

Abstract:

Endeavoring to find a new type of antimicrobial agents, a new sequence of bis-Schiff bases and bis-3-cholro-β-lactams are synthesized. An astonishing class of strained compounds is part of the symmetrical bis-Schiff bases that has widespread applications and building blocks for the combination of bis-3-cholro-β-lactams antibiotics. Bis-3-cholro-β-lactams are synthesized through (Staudinger) [2+2] ketene-imine cycloaddition reaction. Structures of the produced compounds are deduced by 1H, 13C-NMR, and FT-IR spectroscopies. All produced compounds are shown moderate to good antimicrobial activity

APA, Harvard, Vancouver, ISO, and other styles

24

FUJISAWA, T., A. SHIBUYA, D. SATO та M. SHIMIZU. "ChemInform Abstract: Stereoselective Synthesis of a Monocyclic β-Lactam Related to a Carmonam Precursor via Ketene-Imine Reaction." ChemInform 27, № 11 (2010): no. http://dx.doi.org/10.1002/chin.199611300.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Gandhi, Divyani, Ayushi Sethiya, Dinesh Kr Agarwal, Prakash Prajapat, and Shikha Agarwal. "Design, Synthesis and Antimicrobial Study of Novel 1-(1,3-benzothiazol-2- yl)-3-chloro-4H-spiro[azetidine-2,3'-indole]-2',4(1'H)-diones Through Ketene– imine Cycloaddition Reaction." Letters in Organic Chemistry 17, no. 2 (2020): 141–48. http://dx.doi.org/10.2174/1570178616666190705153224.

Full text

Abstract:

: The present study deals with the synthesis of novel 1-(1,3-benzothiazol-2-yl)-3-chloro-4Hspiro[ azetidine-2,3'-indole]-2',4(1'H)-dione derivatives from the reaction of 3-(1,3-benzothiazol-2- ylimino)-1,3-dihydro-2H-indol-2-one derivatives with chloroacetyl chloride in the presence of triethylamine (TEA). The mechanism involved simple acid or base catalysed reaction through the formation of Schiff base followed by cyclisation via ketene–imine cycloaddition reaction. All synthesized compounds were characterized by FT-IR, 1H-NMR, 13C-NMR, and elemental analysis. The antimicrobial activities of

APA, Harvard, Vancouver, ISO, and other styles

26

Truong, Thanh N. "Solvent Effects on Structure and Reaction Mechanism: A Theoretical Study of [2 + 2] Polar Cycloaddition between Ketene and Imine." Journal of Physical Chemistry B 102, no. 40 (1998): 7877–81. http://dx.doi.org/10.1021/jp9816263.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Fang, De-Cai, and Xiao-Yuan Fu. "Ab initio studies on the mechanism of the cycloaddition reaction between ketene imine and formaldehyde — catalytic and solvent effects." Chemical Physics Letters 259, no. 3-4 (1996): 265–70. http://dx.doi.org/10.1016/0009-2614(96)00797-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Venturini, Alessandro, and Javier González. "A CASPT2 and CASSCF Approach to the Cycloaddition of Ketene and Imine: A New Mechanistic Scheme of the Staudinger Reaction." Journal of Organic Chemistry 67, no. 25 (2002): 9089–92. http://dx.doi.org/10.1021/jo026188h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Kaboudin, Babak, та Mohammad Afsharinezhad. "Synthesis of a Novel Class of β-Lactam Derivatives of 1-Aminophosphonates by Staudinger Ketene-Imine [2+2]-Cycloaddition Reaction". Synthesis 2010, № 20 (2010): 3504–8. http://dx.doi.org/10.1055/s-0030-1257889.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Assfeld, X., M. F. Ruiz-lopez, J. Gonzalez, R. Lopez, J. A. Sordo, and T. L. Sordo. "Theoretical analysis of the role of the solvent on the reaction mechanisms: One-step versus two-step ketene-imine cycloaddition." Journal of Computational Chemistry 15, no. 5 (1994): 479–87. http://dx.doi.org/10.1002/jcc.540150502.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Lynch, Joseph E., Stephen M. Riseman, William L. Laswell, et al. "Mechanism of an acid chloride-imine reaction by low-temperature FT-IR: .beta.-lactam formation occurs exclusively through a ketene intermediate." Journal of Organic Chemistry 54, no. 16 (1989): 3792–96. http://dx.doi.org/10.1021/jo00277a011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Kaboudin, Babak, та Mohammad Bagher Afsharinezhad. "ChemInform Abstract: Synthesis of a Novel Class of β-Lactam Derivatives of 1-Aminophosphonates by Staudinger Ketene-Imine [2 + 2]-Cycloaddition Reaction." ChemInform 42, № 5 (2011): no. http://dx.doi.org/10.1002/chin.201105092.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Nimbalkar, Urja, Julio Seijas, Rachna Borkute, et al. "Ultrasound Assisted Synthesis of 4-(Benzyloxy)-N-(3-chloro-2-(substitutedphenyl)-4-oxoazetidin-1-yl) Benzamide as Challenging Anti-Tubercular Scaffold." Molecules 23, no. 8 (2018): 1945. http://dx.doi.org/10.3390/molecules23081945.

Full text

Abstract:

A series of ten novel derivatives of 4-(benzyloxy)-N-(3-chloro-2-(substituted phenyl)-4-oxoazetidin-1-yl) benzamide 6a–j were synthesized in good yield from the key compound 4-(benzyloxy)-N′-(substituted benzylidene) benzo hydrazide, called Schiff ’s bases 5a–j, by Staudinger reaction ([2 + 2] ketene-imine cycloaddition reaction) with chloro acetyl chloride in the presence of catalyst tri ethylamine and solvent dimethyl formamide (DMF), by using ultra-sonication as one of the green chemistry tools. All the synthesised compounds were evaluated for in vitro anti-tubercular activity against Mycob

APA, Harvard, Vancouver, ISO, and other styles

34

Shimizu, M. "Switchover of the Diastereoselectivity Induced by a Simple Selection of Titanium(IV) Halides in the Addition Reaction of Silyl Ketene Acetals to a Chiral Imine." Tetrahedron Letters 36, no. 29 (1995): 5227–30. http://dx.doi.org/10.1016/00404-0399(50)0978l-.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

SHIMIZU, M., K. KUME, and T. FUJISAWA. "ChemInform Abstract: Switchover of the Diastereoselectivity Induced by a Simple Selection of Titanium(IV) Halides in the Addition Reaction of Silyl Ketene Acetals to a Chiral Imine." ChemInform 26, no. 43 (2010): no. http://dx.doi.org/10.1002/chin.199543126.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Palomo, Claudio, Fernando P. Cossio, Jose M. Odiozola, Mikel Oiarbide, and Jesus M. Ontoria. "Preparation of 3-alkyl .beta.-lactams via the ketene imine cycloaddition reaction using .alpha.-(phenylthio)alkanoyl halides as starting materials: application to the synthesis of (.+-.)-carbapenem building blocks and related compounds." Journal of Organic Chemistry 56, no. 14 (1991): 4418–28. http://dx.doi.org/10.1021/jo00014a017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

GEORG, G. I., and V. T. RAVIKUMAR. "ChemInform Abstract: Stereocontrolled Ketene-Imine Cycloaddition Reactions." ChemInform 25, no. 25 (2010): no. http://dx.doi.org/10.1002/chin.199425299.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

PALOMO, C., F. P. COSSIO, J. M. ODIOZOLA, M. OIARBIDE та J. M. ONTORIA. "ChemInform Abstract: Preparation of 3-Alkyl β-Lactams via the Ketene - Imine Cycloaddition Reaction Using α-(Phenylthio)alkanoyl Halides as Starting Materials: Application to the Synthesis of (.+-.)-Carbapenem Building Blocks and Related Compounds." ChemInform 22, № 47 (2010): no. http://dx.doi.org/10.1002/chin.199147282.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Venturini, Alessandro, and Javier Gonzalez. "Mechanistic Aspects of the Ketene-Imine Cycloaddition Reactions." Mini-Reviews in Organic Chemistry 3, no. 3 (2006): 185–94. http://dx.doi.org/10.2174/1570193x10603030185.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Fu, Xiaoyuan, Yan Wang, and Decai Fang. "Ab initio studies on the mechanism of dimerization reactions of ketene imine and bis(trifluoromethyl)ketene imine." Theoretical Chemistry Accounts: Theory, Computation, and Modeling (Theoretica Chimica Acta) 102, no. 1-6 (1999): 87–91. http://dx.doi.org/10.1007/s002140050476.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

López, R., D. Suárez, M. F. Ruiz-López, J. González, J. A. Sordo, and T. L. Sordo. "Solvent effects on the stereoselectivity of ketene–imine cycloaddition reactions." J. Chem. Soc., Chem. Commun., no. 16 (1995): 1677–78. http://dx.doi.org/10.1039/c39950001677.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Aitken, R. Alan, Lynn A. Power, and Alexandra M. Z. Slawin. "[3+2] Cycloaddition to a Chiral 5-Methylene-1,3-dioxolan-4-one and Pyrolysis of the Spiro Adducts." Molecules 30, no. 6 (2025): 1246. https://doi.org/10.3390/molecules30061246.

Full text

Abstract:

The [3+2] cycloaddition chemistry of (2S)-5-methylene-2-t-butyl-1,3-dioxolan-4-one, derived from lactic acid, has been examined, and spiro adducts have been obtained with benzonitrile oxide, acetonitrile oxide, diazomethane and diphenyldiazomethane. The structure and absolute stereochemistry of the benzonitrile oxide adduct has been confirmed by X-ray diffraction, and all the adducts have been fully characterised by 1H and 13C NMR. Attempted cycloaddition with a nitrile sulfide, a nitrile imine and azides failed. Pyrolysis results in a range of novel gas-phase reactions, with the nitrile oxide

APA, Harvard, Vancouver, ISO, and other styles

43

Lopez, R., T. L. Sordo, J. A. Sordo, and Javier Gonzalez. "Torquoelectronic effect in the control of the stereoselectivity of ketene-imine cycloaddition reactions." Journal of Organic Chemistry 58, no. 25 (1993): 7036–37. http://dx.doi.org/10.1021/jo00077a022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Jarrahpour, Aliasghar, Mohammad Mahdi Doroodmand, and Edris Ebrahimi. "The first report of [2+2] ketene–imine cycloaddition reactions (Staudinger) on carbon nanotubes." Tetrahedron Letters 53, no. 23 (2012): 2797–801. http://dx.doi.org/10.1016/j.tetlet.2012.03.089.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Downey, C. Wade, Grace Ann L. Robertson, Jhonmattew Santa, Kari R. Flicker, and William M. Stith. "One-pot silyl ketene imine formation-nucleophilic addition reactions of acetonitrile with acetals and nitrones." Tetrahedron Letters 61, no. 9 (2020): 151537. http://dx.doi.org/10.1016/j.tetlet.2019.151537.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Anand, K. Halve, Bhadauria Deepti, Bhaskar Bhuwan, Dubey Rakesh, and Bhadauria Raman. "Design, synthesis and in vitro antibacterial studies of some biologically significant N-3-chloro-4-[2' -hydroxy-5' -(phenylazo)phenyl]azetidin-2-ones." Journal of Indian Chemical Society Vol. 84, Feb 2007 (2007): 193–96. https://doi.org/10.5281/zenodo.5814777.

Full text

Abstract:

School of Studies in Chemistry, Jiwaji University, Gwalior-474 011, Madhya Pradesh, India <em>E-mail</em> : drhalve chemjiwaji@rediffmail.com, dipti_1706@rediffmail.com <em>Manuscript received 28 February 2006, revised 13 September 2006, accepted 29 November 2006</em> The title compounds 3a-h were prepared via the reaction of imine derivatives viz. substituted 2-hydroxy-5-(4'-nitrophenylazo)benzylidine anilines 2a-h with ketenes generated by the reaction of chloroacetylchloride with tridhylamine in 1,4-dioxane. The structures of synthesized compounds were assigned by elemental analysis and

APA, Harvard, Vancouver, ISO, and other styles

47

Evans, David A., та J. Michael Williams. "The asymmetric synthesis of β-lactam antibiotics-v. Application of chiral α,β-epoxyimines in ketene-imine cycloaddition reactions leading to homochiral 3-aminoazetidinones." Tetrahedron Letters 29, № 40 (1988): 5065–68. http://dx.doi.org/10.1016/s0040-4039(00)80680-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Habib, Osama M., Asaad S. Mohamed, Yehia A. Ibrahim та Nouria A. Al-Awadi. "Sequential Diimination, Staudinger [2 + 2] Ketene–Imine Cycloaddition, and Ring-Closing Metathesis (RCM) Reactions: In Route to Bis(4-spiro-fused-β-lactams)-Based Macrocycles". Journal of Organic Chemistry 86, № 21 (2021): 14777–85. http://dx.doi.org/10.1021/acs.joc.1c01576.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Brandstadter, Stephan M., Iwao Ojima, and Kenji Herai. "Reactions of ketene silyl acetals with imine-complexes of titanium tetrachloride. New and convenient routes to 5,6-dihydro-2-pyridones and 5-amino-2-alkenoates." Tetrahedron Letters 28, no. 6 (1987): 613–16. http://dx.doi.org/10.1016/s0040-4039(00)95794-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Xu, Xichen, Yingjun Zhao, Rujie Xu та Zhengqing Xu. "Rh2(esp)2-Catalyzed Redox/Cycloaddition Cascade of Diazoacetoacetate Enones with N-Methyl Nitrones: Diastereoselective Synthesis of β-Lactams with Two Adjacent Chiral Centers". Synthesis, 1 лютого 2022. http://dx.doi.org/10.1055/s-0040-1719883.

Full text

Abstract:

AbstractA Rh2(esp)2-catalyzed diastereoselective synthesis of highly functionalized β-lactams is developed. By employing Rh2(esp)2 as the catalyst, a reaction cascade operates by reducing an N-methyl nitrone to the corresponding N-methyl imine in the presence of a first molecule of the diazoacetoacetate enone. A second molecule of the diazoacetoacetate enone sensing a change in the reaction medium undergoes a Wolff rearrangement to afford a vinyl ketene. This vinyl ketene then reacts with the in situ generated N-methyl imine to diastereoselectively furnish a β-lactam with two contiguous stereo

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!