6 article(s) from Beier, Petr
- Letter
- Published 24 Nov 2017
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Scheme 1: Synthetic routes for the preparation of trifluoromethyl dithiocarbamates.
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Scheme 2: Synthesis of S-trifluoromethyl dithiocarbamates. Isolated yields are given in parentheses.
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Scheme 3: Formation of benzyl isothiocyanate in a reaction with benzylamine.
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Figure 1: Variable temperature 1H NMR spectra of compound 4c (CH2 region on the left and CH3 region on the ri...
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Figure 2: The Eyring plot obtained for the rotation around the N–C bond in compound 4c.
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Figure 3: The optimized structure of compound 4b (left) and the transition state structure for the rotation a...
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- Full Research Paper
- Published 03 Feb 2016
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Scheme 1: Direct fluorination of 1,2-bis(3-nitrophenyl)disulfane.
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Scheme 2: Direct fluorination of 3-nitro-1-(pentafluorosulfanyl)benzene (1).
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Figure 1: Conversion vs added fluorine equivalents for the fluorination of 1 in MeCN (left) and anhydrous HF ...
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Scheme 3: Preparative fluorination of 3-nitro-1-(pentafluorosulfanyl)benzene (1).
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Scheme 4: Synthesis of 2 by fluorodenitration of 5.
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- Full Research Paper
- Published 20 Jan 2016
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Scheme 1: Oxidation of SF5-anisole and phenol. 19F NMR yields are shown (isolated yields in parentheses).
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Scheme 2: Proposed mechanism for the formation of 3 and 4 from SF5 aromatics 1 and 2.
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Scheme 3: Oxidation of anisole 10 and phenol 11. 19F NMR yields are given.
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Scheme 4: Synthesis of para-benzoquinone 12 and oxidation to maleic acid 4. 19F NMR yields are shown, in pare...
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Scheme 5: Catalytic hydrogenation and Diels–Alder reaction of benzoquinone 12.
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Figure 1: Optimized geometries of transition states of Diels–Alder reaction of cyclopentadiene with 12. Selec...
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Scheme 6: Decomposition of 3 in water.
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Scheme 7: Formation of acids 5, 18 and 19 from lactone 3.
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Scheme 8: Synthesis of maleic anhydride 20 and Diels–Alder adducts 21.
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Scheme 9: Reaction of maleic acid 4 with diazomethane.
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Scheme 10: Decarboxylation of maleic acid 4 to acrylic acid 23 in DMSO and the preparation of deuterium labell...
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- Full Research Paper
- Published 26 Aug 2015
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Scheme 1: Borylation of aryldiazonium tetrafluoroborates 3. Reaction conditions: 3 (1 mmol), B2pin2 (1 mmol),...
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Scheme 2: Proposed reaction mechanism.
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Scheme 3: Reaction of diazonium salt 3i under borylation conditions.
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Scheme 4: Suzuki–Miyaura reaction of boronates 2a and 2b with aryl iodides. Reaction conditions: 2 (1 mmol), ...
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Scheme 5: Syntesis of boronic acid 8b and trifluoroborates 9. Reaction conditions for the synthesis of 8b: 2 ...
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Scheme 6: Iodination of aryldiazonium tetrafluoroborates 3. Reaction conditions: 3 (1 mmol), I2 (1.1 mmol), p...
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- Full Research Paper
- Published 21 Feb 2013
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Scheme 1: Proposed mechanism of the Davis reaction giving benzisoxazoles.
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Figure 1: Substitution products 1, oximes 2 and nitro-(pentafluorosulfanyl)benzenes 3 and 4.
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Scheme 2: Synthesis of SF5-substituted quinolines and mefloquine analogues by Wipf and co-workers [29,30].
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Scheme 3: Synthesis of quinoline 12.
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Scheme 4: Synthesis of quinoline 13.
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Scheme 5: Synthesis of quinazoline 14.
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- Full Research Paper
- Published 25 Jul 2012
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Scheme 1: Proposed synthesis of alkenyl-(pentafluorosulfanyl)benzenes.
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Scheme 2: Reactive intermediates involved in HWE reactions to alkenes 5 and 6.
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Scheme 3: Diazotization/reduction of 8d to 9d and the formation of unexpected cyclized product 10d.
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Scheme 4: Synthesis of substituted phenanthrene 11d.
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Scheme 5: Synthesis of phosphonate 12 and SF5-stilbene derivative 13d.
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