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Beilstein J. Org. Chem. 2017, 13, 1050–1063, doi:10.3762/bjoc.13.104
Graphical Abstract
Scheme 1: Aminoazoles in GBB-3CR and Ugi-4CR.
Scheme 2: Reactivity of 5-amino-N-aryl-1H-pyrazole-4-carboxamide and 3-amino-5-methylisoxazole in GBB-3CR and...
Figure 1: Alternative structures A and B for compounds 4 and 6.
Figure 2: Selected data of HSQC and HMBC experiments for compound 4a.
Figure 3: Molecular structure of 3-(tert-butylamino)-2-(4-chlorophenyl)-N-(4-fluorophenyl)-1H-imidazo[1,2-b]p...
Figure 4: Selected data of NOE and HSQC experiments for compound 9d.
Figure 5: Molecular structure of N-(2-(tert-butylamino)-1-(4-chlorophenyl)-2-oxoethyl)-N-(5-methylisoxazol-3-...
Beilstein J. Org. Chem. 2014, 10, 3019–3030, doi:10.3762/bjoc.10.320
Scheme 1: Some three-component reactions involving N-aryl-3-oxobutanamides.
Scheme 2: Some Biginelli-type three-component condensations with salicylaldehyde.
Scheme 3: Three-component heterocyclization of 5-amino-3-methylisoxazole (1), salicylaldehyde (2) and N-(2-me...
Figure 1: The possible structure of an intermediate complex in reactions forming the heterocycles 6.
Scheme 4: Possible pathways for the three-component reaction of 5-amino-3-methylisoxazole (1), salicylaldehyd...
Figure 2: Alternative structures 5a and 5'a for dihydroisoxazolopyridine 5a and selected NOESY correlations.
Figure 3: Alternative structures 6a, 6'a and 6''a for compound 6a.
Figure 4: Selected data from NOESY experiments and relative stereochemistry of stereogenic centers at positio...
Figure 5: Molecular structure of compound 6a according to X-ray diffraction data.
Beilstein J. Org. Chem. 2014, 10, 117–126, doi:10.3762/bjoc.10.8
Figure 1: The NOE correlations of the signals in 1H NMR spectra of compounds 4b–4d.
Figure 2: Molecular structure of spirooxindole 4a according to X-ray diffraction data.
Figure 3: The NOE correlations of the signals in 1H NMR spectrum of compound 6c.
Figure 4: Molecular structure of spirooxindole 6a observed in crystal phase as solvate with methanol accordin...
Scheme 1: The mechanism of the regioselective synthesis of compounds 4 and 6.
Figure 5: Conformations of acrylamide and benzoylacrylic acid.
Figure 6: The Fukui function indices of acrylamide, azomethine ylide and benzoylacrylic acid.
Scheme 2: The synthesis of compounds 7a–7c.
Figure 7: The selected COSY, NOESY and HMBC correlations of the signals in the 1H and 13C NMR spectra of comp...
Scheme 3: Tentative reaction mechanism for the decarboxylative cyclative rearrangement of the initial three-c...