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Beilstein J. Org. Chem. 2017, 13, 285–300, doi:10.3762/bjoc.13.31
Graphical Abstract
Figure 1: Graphical representation of (a) conventional flow cell with a saddle-shaped RF coil and (b) flow ca...
Figure 2: Possible geometries of NMR coils.
Figure 3: The NMR pulse sequence used for NOESY with WET solvent suppression [28].
Figure 4: Reaction of p-phenylenediamine with isobutyraldehyde. (a) Flow tube and (b) 1H NMR stacked plot (40...
Figure 5: Scheme and experimental setup of the flow system.
Figure 6: (a) Microfluidic probe. (b) Microreactor holder. (c) Stripline NMR chip holder. (d) Arrangement of ...
Figure 7: Acetylation of benzyl alcohol. Spectra at (a) 9 s and (b) 3 min. Stoichiometry: benzyl alcohol/DIPE...
Figure 8: a) Design of MICCS and b) schematic diagram of MICCS–NMR [45]. CH2Cl2 solutions of oxime ether and trie...
Scheme 1: Proposed reaction mechanism.
Figure 9: Flowsheet of the experimental setup used to study the reaction kinetics of the oligomer formation i...
Figure 10: Design of the experimental setup used to combine on-line NMR spectroscopy and a batch reactor. Repr...
Figure 11: Reaction system 1,3-dimethylurea/formaldehyde. Main reaction pathway and side reactions [47].
Figure 12: (a) Experimental setup for the reaction. (b) Reaction samples analyzed independently by NMR. (c) Pl...
Figure 13: (a) Schematics of two microreactor cohorts of sample fractions. (b) Reaction product concentration ...
Figure 14: NMR analysis of the reaction of benzaldehyde (2 M in CH3CN) and benzylamine (2 M in CH3CN) (1:1), r...
Figure 15: Flow diagram showing the self-optimizing reactor system. Reproduced with permission from reference [50]...
Beilstein J. Org. Chem. 2016, 12, 2181–2188, doi:10.3762/bjoc.12.208
Scheme 1: Distribution of products in the Diels–Alder reaction between cyclopentadiene and p-benzoquinone.
Figure 1: Conversion in the DAR catalysed by silica Beta zeolites and Aerosil.
Figure 2: Effect of Lewis and Brønsted acid sites in the conversion (a) and selectivity (b) of the DAR.
Figure 3: Effect of pore size in the conversion (a) and selectivity (b) of the DAR.
Figure 4: Comparison of conversion (a) and selectivity (b) of the DAR catalysed by Al-Beta zeolite and MCM-41....
Figure 5: Comparison of conversion (a) and selectivity (b) of the DAR catalysed extra-large pore 3D zeolites.
Figure 6: Effect of the Si/Al ratio in the conversion (a) and selectivity (b) of the DAR.
Figure 7: Effect of the reutilization of the catalysts in the conversion (a) and selectivity (b) of the DAR.