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Supported gold nanoparticles as efficient and reusable heterogeneous catalyst for cycloisomerization reactions

(2015) GREEN CHEMISTRY. 17(6). p.3314-3318
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Abstract
We report the utilization of a novel catalyst for cycloisomerizations. The novel catalyst system contains gold nanoparticles supported on Al-SBA15, which was prepared by the ball-milling process. We developed a greener methodology for synthesizing spiroindolines under heterogeneous conditions, using this novel class of supported gold nanoparticles in combination with microwave irradiation. The catalyst is highly reusable and selective. Cycloisomerization reaction yields ranged from good to excellent leading to the formation of two novel classes of six- and seven-membered heterocycles, which have been unprecedented so far. The selectivity of the catalyst towards the desired products is high and the reaction can be performed in ethanol as the solvent. A one-pot cascade reaction could be established commencing with the Ugi-reaction to ensure diversity.
Keywords
DIASTEREOSELECTIVE DOMINO CYCLIZATION, MECHANOCHEMICAL SYNTHESIS, COMPLEXES, NANOCOMPOSITES, SPIROINDOLINES, SELECTIVITY, ACTIVATION, MECHANISM, PLATINUM, ALKYNES

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MLA
Schröder, Felix et al. “Supported Gold Nanoparticles as Efficient and Reusable Heterogeneous Catalyst for Cycloisomerization Reactions.” GREEN CHEMISTRY 17.6 (2015): 3314–3318. Print.
APA
Schröder, F., Ojeda, M., Erdmann, N., Jacobs, J., Luque, R., Noël, T., Van Meervelt, L., et al. (2015). Supported gold nanoparticles as efficient and reusable heterogeneous catalyst for cycloisomerization reactions. GREEN CHEMISTRY, 17(6), 3314–3318.
Chicago author-date
Schröder, Felix, Manuel Ojeda, Nico Erdmann, Jeroen Jacobs, Rafael Luque, Timothy Noël, Luc Van Meervelt, Johan Van der Eycken, and Erik V Van der Eycken. 2015. “Supported Gold Nanoparticles as Efficient and Reusable Heterogeneous Catalyst for Cycloisomerization Reactions.” Green Chemistry 17 (6): 3314–3318.
Chicago author-date (all authors)
Schröder, Felix, Manuel Ojeda, Nico Erdmann, Jeroen Jacobs, Rafael Luque, Timothy Noël, Luc Van Meervelt, Johan Van der Eycken, and Erik V Van der Eycken. 2015. “Supported Gold Nanoparticles as Efficient and Reusable Heterogeneous Catalyst for Cycloisomerization Reactions.” Green Chemistry 17 (6): 3314–3318.
Vancouver
1.
Schröder F, Ojeda M, Erdmann N, Jacobs J, Luque R, Noël T, et al. Supported gold nanoparticles as efficient and reusable heterogeneous catalyst for cycloisomerization reactions. GREEN CHEMISTRY. 2015;17(6):3314–8.
IEEE
[1]
F. Schröder et al., “Supported gold nanoparticles as efficient and reusable heterogeneous catalyst for cycloisomerization reactions,” GREEN CHEMISTRY, vol. 17, no. 6, pp. 3314–3318, 2015.
@article{7251056,
  abstract     = {We report the utilization of a novel catalyst for cycloisomerizations. The novel catalyst system contains gold nanoparticles supported on Al-SBA15, which was prepared by the ball-milling process. We developed a greener methodology for synthesizing spiroindolines under heterogeneous conditions, using this novel class of supported gold nanoparticles in combination with microwave irradiation. The catalyst is highly reusable and selective. Cycloisomerization reaction yields ranged from good to excellent leading to the formation of two novel classes of six- and seven-membered heterocycles, which have been unprecedented so far. The selectivity of the catalyst towards the desired products is high and the reaction can be performed in ethanol as the solvent. A one-pot cascade reaction could be established commencing with the Ugi-reaction to ensure diversity.},
  author       = {Schröder, Felix and Ojeda, Manuel and Erdmann, Nico and Jacobs, Jeroen and Luque, Rafael and Noël, Timothy and Van Meervelt, Luc and Van der Eycken, Johan and Van der Eycken, Erik V},
  issn         = {1463-9262},
  journal      = {GREEN CHEMISTRY},
  keywords     = {DIASTEREOSELECTIVE DOMINO CYCLIZATION,MECHANOCHEMICAL SYNTHESIS,COMPLEXES,NANOCOMPOSITES,SPIROINDOLINES,SELECTIVITY,ACTIVATION,MECHANISM,PLATINUM,ALKYNES},
  language     = {eng},
  number       = {6},
  pages        = {3314--3318},
  title        = {Supported gold nanoparticles as efficient and reusable heterogeneous catalyst for cycloisomerization reactions},
  url          = {http://dx.doi.org/10.1039/c5gc00430f},
  volume       = {17},
  year         = {2015},
}

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