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Beilstein J. Org. Chem. 2022, 18, 1088–1099, doi:10.3762/bjoc.18.111
Graphical Abstract
Scheme 1: Reactions of tetrazoloquinoxalines 1 to 1,2,3-triazoloquinoxalines 3 via CuAAC and denitrogenative ...
Scheme 2: Synthesis of tetrazolo[1,5-a]quinoxalines. Reaction conditions: (a) 9, THF or 4 M HCl, 70–110 °C, 2...
Scheme 3: Synthesis of 1,2,3-triazole-substituted quinoxalines via CuAAC from tetrazolo[1,5-a]quinoxaline (11a...
Scheme 4: Mechanism of CuAAC vs denitrogenative annulation.
Scheme 5: Synthesis of bis(tetrazolo)[1,5-a:5',1'-c]quinoxaline (24) and conversion to triazoloimidazoquinoxa...
Scheme 6: Synthesis of rhenium tricarbonyl complexes 27a–d and ORTEP diagrams of the resulting molecular stru...
Scheme 7: Synthesis of rhenium tricarbonyl complex 29 and ORTEP diagram of the resulting molecular structure ...
Scheme 8: Synthesis of a TIQ rhenium complex and ORTEP diagram of the obtained product 30 with the thermal el...
Figure 1: UV–vis absorption spectra of the obtained metal complexes (18 µM solutions) in acetonitrile at 20 °...
Figure 2: Cyclic voltammetry traces for rhenium complexes 27a–d, 29 and 30: 0.5 mM in MeCN solution with 0.1 ...
Beilstein J. Org. Chem. 2021, 17, 2773–2780, doi:10.3762/bjoc.17.187
Scheme 1: Synthesis of 3,6-dihydro-4H-pyrazolo[3,4-d][1,2,3]triazin-4-ones 2a,b by diazotization of 3-amino-1H...
Figure 1: Structural differences of several known (2–4) and so far unknown (5 and 6) pyrazolo[3,4-d][1,2,3]-3H...
Scheme 2: Synthesis of 3,4-dihydrobenzo[d][1,2,3]triazine derivatives 8 from triazene-containing precursors 7 ...
Scheme 3: Planned retrosynthesis to obtain 4,6-dihydropyrazolo[3,4-d][1,2,3]-3H-triazines 5 and 4,7-dihydropy...
Figure 2: Molecular structures of compounds 12h (A) and 13c (B) representing both possible regioisomers of th...
Scheme 4: Cleavage of the triazene protective group and cyclization of the resulting diazonium intermediate y...
Figure 3: Graphical overview about selected pyrazolo[1,2,3]triazines 5 and intermediates 9, 12, and 13 and th...
Beilstein J. Org. Chem. 2018, 14, 515–522, doi:10.3762/bjoc.14.37
Scheme 1: Previously reported procedure for the addition of ketene dithioacetals to α,β-unsaturated ketones [33] ...
Scheme 2: Addition of dithi(ol)anylium TFBs to α,β-unsaturated non-cyclic ketones.
Scheme 3: Addition of dithi(ol)anylium TFBs to α,β-unsaturated cyclic ketones.
Scheme 4: Single versus double addition of ketones to dithiolanylium TFB 1e. adr was calculated from the 1H N...
Scheme 5: The scope of the presented protocol demonstrated by examples including the use of additional electr...
Scheme 6: Synthesis of diene dithioacetals 18a and 18b by addition of ynone 17 to α-alkyl or aryl-substitued ...