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2 article(s) from Gomez, M. Victoria

NMR reaction monitoring in flow synthesis

M. Victoria Gomez and
Antonio de la Hoz

Beilstein J. Org. Chem. 2017, 13, 285–300, doi:10.3762/bjoc.13.31

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Graphical Abstract

Figure 1: Graphical representation of (a) conventional flow cell with a saddle-shaped RF coil and (b) flow ca...

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Figure 2: Possible geometries of NMR coils.

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Figure 3: The NMR pulse sequence used for NOESY with WET solvent suppression [28].

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Figure 4: Reaction of p-phenylenediamine with isobutyraldehyde. (a) Flow tube and (b) ¹H NMR stacked plot (40...

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Figure 5: Scheme and experimental setup of the flow system.

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Figure 6: (a) Microfluidic probe. (b) Microreactor holder. (c) Stripline NMR chip holder. (d) Arrangement of ...

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Figure 7: Acetylation of benzyl alcohol. Spectra at (a) 9 s and (b) 3 min. Stoichiometry: benzyl alcohol/DIPE...

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Figure 8: a) Design of MICCS and b) schematic diagram of MICCS–NMR [45]. CH₂Cl₂ solutions of oxime ether and trie...

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Scheme 1: Proposed reaction mechanism.

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Figure 9: Flowsheet of the experimental setup used to study the reaction kinetics of the oligomer formation i...

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Figure 10: Design of the experimental setup used to combine on-line NMR spectroscopy and a batch reactor. Repr...

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Figure 11: Reaction system 1,3-dimethylurea/formaldehyde. Main reaction pathway and side reactions [47].

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Figure 12: (a) Experimental setup for the reaction. (b) Reaction samples analyzed independently by NMR. (c) Pl...

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Figure 13: (a) Schematics of two microreactor cohorts of sample fractions. (b) Reaction product concentration ...

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Figure 14: NMR analysis of the reaction of benzaldehyde (2 M in CH₃CN) and benzylamine (2 M in CH₃CN) (1:1), r...

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Figure 15: Flow diagram showing the self-optimizing reactor system. Reproduced with permission from reference [50]...

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Review

Published 14 Feb 2017

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Diels–Alder reactions in confined spaces: the influence of catalyst structure and the nature of active sites for the retro-Diels–Alder reaction

Ángel Cantín,
M. Victoria Gomez and
Antonio de la Hoz

Beilstein J. Org. Chem. 2016, 12, 2181–2188, doi:10.3762/bjoc.12.208

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Graphical Abstract

Scheme 1: Distribution of products in the Diels–Alder reaction between cyclopentadiene and p-benzoquinone.

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Figure 1: Conversion in the DAR catalysed by silica Beta zeolites and Aerosil.

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Figure 2: Effect of Lewis and Brønsted acid sites in the conversion (a) and selectivity (b) of the DAR.

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Figure 3: Effect of pore size in the conversion (a) and selectivity (b) of the DAR.

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Figure 4: Comparison of conversion (a) and selectivity (b) of the DAR catalysed by Al-Beta zeolite and MCM-41....

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Figure 5: Comparison of conversion (a) and selectivity (b) of the DAR catalysed extra-large pore 3D zeolites.

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Figure 6: Effect of the Si/Al ratio in the conversion (a) and selectivity (b) of the DAR.

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Figure 7: Effect of the reutilization of the catalysts in the conversion (a) and selectivity (b) of the DAR.

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Full Research Paper

Published 13 Oct 2016

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