Organische Chemie (Sparr)

Lotter, Dominik et al. (2024) ‘Photoinduced Energy Transfer via an Atropisomeric Molecular Bridge’, Helvetica Chimica Acta. 04.12.2024, 108(1). Available at: https://doi.org/10.1002/hlca.202400163.

Jana, Kalipada et al. (2024) ‘Atroposelective Arene‐Forming Wittig Reaction by Phosphorus P III /P V =O Redox Catalysis’, Angewandte Chemie. 28.06.2024, 136(37). Available at: https://doi.org/10.1002/ange.202408159.

Schmidt, Tanno A., Hutskalova, Valeriia and Sparr, Christof (2024) ‘Atroposelective catalysis’, Nature Reviews Chemistry. 18.06.2024, 8, pp. 497–517. Available at: https://doi.org/10.1038/s41570-024-00618-x.

Hutskalova, Valeriia and Sparr, Christof (2024) ‘Aromatic Ring-Opening Metathesis’, Chemrxiv [Preprint]. Cambridge University Press. Available at: https://doi.org/10.26434/chemrxiv-2024-d6qkv.

Hutskalova, V., Bou Hamdan, F. and Sparr, C. (2024) ‘Decarboxylative Nickel- and Photoredox-Catalyzed Aminocarbonylation of (Hetero)Aryl Bromides’, Organic Letters, 26(14), pp. 2768–2772. Available at: https://doi.org/10.1021/acs.orglett.3c02389.

Moser, D., Schmidt, T.A. and Sparr, C. (2023) ‘Diastereodivergent Catalysis’, JACS Au, 3(10), pp. 2612–2630. Available at: https://doi.org/10.1021/jacsau.3c00216.

Pfund, B. et al. (2023) ‘Isoacridone dyes with parallel reactivity from both singlet and triplet excited states for biphotonic catalysis and upconversion’, Chemical Science. 02.10.2023, 14(40), pp. 11180–11191. Available at: https://doi.org/10.1039/d3sc02768f.

Moser, D., Jana, K. and Sparr, C. (2023) ‘Atroposelective PIII/PV=O Redox Catalysis for the Isoquinoline-Forming Staudinger–aza-Wittig Reaction’, Angewandte Chemie - International Edition, 62(39). Available at: https://doi.org/10.1002/anie.202309053.

Moser, D., Jana, K. and Sparr, C. (2023) ‘Atroposelective PIII/PV=O Redox Catalysis for the Isoquinoline-Forming Staudinger–aza-Wittig Reaction’, Angewandte Chemie. 14.07.2023, 135(39). Available at: https://doi.org/10.1002/ange.202309053.

Schmidt, T.A. et al. (2023) ‘Catalyst Control over Threefold Stereogenicity: Selective Synthesis of Atropisomeric Sulfones with Stereogenic C−S Axes’, Angewandte Chemie - International Edition, 62(21). Available at: https://doi.org/10.1002/anie.202302084.

Schmidt, T.A. et al. (2023) ‘Katalysatorkontrolle über dreifache Stereogenität: Selektive Synthese atropisomerer Sulfone mit stereogenen C−S-Achsen’, Angewandte Chemie. 14.03.2023, 135(21). Available at: https://doi.org/10.1002/ange.202302084.

Jončev, Z. and Sparr, C. (2022) ‘Atroposelective Arene-Forming Alkene Metathesis**’, Angewandte Chemie. 25.10.2022, 134(51). Available at: https://doi.org/10.1002/ange.202211168.

Dong, J., Ostertag, A. and Sparr, C. (2022) ‘o-Quinodimethane Atropisomers: Enantioselective Synthesis and Stereospecific Transformation’, Angewandte Chemie. 18.10.2022, 134(50). Available at: https://doi.org/10.1002/ange.202212627.

Hutskalova, V. and Sparr, C. (2022) ‘Control over Stereogenic N-N Axes by Pd-Catalyzed 5- endo -Hydroaminocyclizations’, Synthesis (Germany), 55(11), pp. 1770–1782. Available at: https://doi.org/10.1055/a-1993-6899.

Moser, D. and Sparr, C. (2022) ‘Synthesis of Atropisomeric Two-Axis Systems by the Catalyst-Controlled syn- and anti-Selective Arene-Forming Aldol Condensation’, Angewandte Chemie. 27.03.2022, 134(24). Available at: https://doi.org/10.1002/ange.202202548.

Jončev, Zlatko and Sparr, Christof (2022) ‘Atroposelective arene-forming alkene metathesis’, ChemRxiv [Preprint]. Cambridge University Press. Available at: https://doi.org/10.26434/chemrxiv-2022-w8h26.

Wu, X. and Sparr, C. (2022) ‘Stereoselective Synthesis of Atropisomeric Acridinium Salts by the Catalyst-Controlled Cyclization of ortho-Quinone Methide Iminiums’, Angewandte Chemie. 15.02.2022, 134(19). Available at: https://doi.org/10.1002/ange.202201424.

Dong, Jianyang, Ostertag, Andreas and Sparr, Christof (2022) ‘o-Quinodimethane Atropisomers: Enantioselective Synthesis and Stereospecific Transformation’, Angewandte Chemie International Edition, 61(50), p. e202212627. Available at: https://doi.org/10.1002/anie.202212627.

Hutskalova, Valeriia and Sparr, Christof (2022) ‘The Versatility of the Aryne-Imine-Aryne Coupling for the Synthesis of Acridinium Photocatalysts’, Synlett, 33(12), pp. 1180–1183. Available at: https://doi.org/10.1055/s-0040-1720349.

Hutskalova, V. and Sparr, C. (2022) ‘Synthesis and Applications of Acridinium Salts (Update 2022)’. Georg Thieme Verlag, pp. 1–44. Available at: https://doi.org/10.1055/sos-sd-115-00850.

Jakobi, Markus and Sparr, Christof (2022) ‘Streamlined Synthesis of Aminoacridinium Photocatalysts with Improved Photostability’, Organic process research & development, 26(9), pp. 2756–2760. Available at: https://doi.org/10.1021/acs.oprd.2c00209.

Jakobi, Markus, Zilate, Bouthayna and Sparr, Christof (2022) ‘Synthesis of Diarylaminoacridinium Photocatalysts by Halogen-Metal Exchange Combined with Directed ortho Metalations’, Advanced Synthesis and Catalysis, 364(19), pp. 3384–3388. Available at: https://doi.org/10.1002/adsc.202200819.

Jončev, Zlatko and Sparr, Christof (2022) ‘Atroposelective Arene-Forming Alkene Metathesis’, Angewandte Chemie International Edition, 61(51), p. e202211168. Available at: https://doi.org/10.1002/anie.202211168.

Moser, Daniel and Sparr, Christof (2022) ‘Synthesis of Atropisomeric Two-Axis Systems by the Catalyst-Controlled syn- and anti-Selective Arene-Forming Aldol Condensation’, Angewandte Chemie International Edition, 61(24), p. e202202548. Available at: https://doi.org/10.1002/anie.202202548.

Schmidt, Tanno A. and Sparr, Christof (2022) ‘Photocatalytic deracemisation of cobalt(III) complexes with fourfold stereogenicity’, Chemical Communications, 58(87), pp. 12172–12175. Available at: https://doi.org/10.1039/d2cc05196f.

Wu, Xingxing et al. (2022) ‘X-Ray Crystallographic Studies of Quasi-Racemates for Absolute Configuration Determinations’, Helvetica Chimica Acta, 105(11), p. e202200117. Available at: https://doi.org/10.1002/hlca.202200117.

Wu, Xingxing and Sparr, Christof (2022) ‘Stereoselective Synthesis of Atropisomeric Acridinium Salts by the Catalyst-Controlled Cyclization of ortho-Quinone Methide Iminiums’, Angewandte Chemie International Edition, 61(19), p. e202201424. Available at: https://doi.org/10.1002/anie.202201424.

Wu, Xingxing and Sparr, Christof (2022) ‘Retrosynthetic polyketide disconnections for unnatural aromatics’, Trends in chemistry, 4(5), pp. 367–370. Available at: https://doi.org/10.1016/j.trechm.2022.01.013.

Hutskalova, Valeriia and Sparr, Christof (2022) ‘Synthesis and Applications of Acridinium Salts (Chapter 15.9.4)’, in Donohoe, Timothy J.; Krause, Norbert; Marsden, Stephen Philip; Montchamp, Jean-Luc; Terentev, Alexander; Weinreb, Steven M. (ed.) Science of Synthesis: Knowledge Updates. Stuttgart: Thieme (Science of Synthesis: Knowledge Updates), pp. 1–44.

Schmidt, T.A. and Sparr, C. (2021) ‘Katalysatorkontrollierte stereoselektive Barton‐Kellogg‐Olefinierung’, Angewandte Chemie. 20.08.2021, 133(44), pp. 24105–24111. Available at: https://doi.org/10.1002/ange.202109519.

Scherrer, D. et al. (2021) ‘Reaktionsverfolgung von Festphasensynthesen in selbstassemblierenden Monolagen mit oberflächenverstärkter Raman‐Spektroskopie’, Angewandte Chemie. 28.05.2021, 133(33), pp. 18126–18134. Available at: https://doi.org/10.1002/ange.202102319.

Wu, X. et al. (2021) ‘Publisher Correction: Catalyst control over sixfold stereogenicity (Nature Catalysis, (2021), 4, 6, (457-462), 10.1038/s41929-021-00615-z)’, Nature Catalysis, 4(6). Available at: https://doi.org/10.1038/s41929-021-00645-7.

Bonrath, W. et al. (2021) ‘New Transition Metal Catalyst’.

Bonrath, W. et al. (2021) ‘Photooxidation of 2,3,5-Trimethylphenol’.

Bonrath, W. et al. (2021) ‘Photooxidation of 2,3,6-Trimethylphenol’.

Hutskalova, Valeriia, Prescimone, Alessandro and Sparr, Christof (2021) ‘Synthesis of Helical and Planar Extended-Phenanthridinium Salts’, Helvetica Chimica Acta, 104(12), p. e2100182. Available at: https://doi.org/10.1002/hlca.202100182.

Hutskalova, Valeriia and Sparr, Christof (2021) ‘Ad Hoc Adjustment of Photoredox Properties by the Late-Stage Diversification of Acridinium Photocatalysts’, Organic letters, 23(13), pp. 5143–5147. Available at: https://doi.org/10.1021/acs.orglett.1c01673.

Schmidt, Tanno A. and Sparr, Christof (2021) ‘Catalyst-Controlled Stereoselective Barton-Kellogg Olefination’, Angewandte Chemie International Edition, 60(44), pp. 23911–23916. Available at: https://doi.org/10.1002/anie.202109519.

Schmidt, Tanno A. and Sparr, Christof (2021) ‘Catalyst Control over Twofold and Higher-Order Stereogenicity by Atroposelective Arene Formation’, Accounts of Chemical Research, 54(12), pp. 2764–2774. Available at: https://doi.org/10.1021/acs.accounts.1c00178.

Triandafillidi, Ierasia et al. (2021) ‘Aldehyde-catalyzed epoxidation of unactivated alkenes with aqueous hydrogen peroxide’, Chemical Science, 12(30), pp. 10191–10196. Available at: https://doi.org/10.1039/d1sc02360h.

Wellauer, Joel et al. (2021) ‘Organophotocatalytic Aerobic Oxygenation of Phenols in a Visible-Light Continuous-Flow Photoreactor’, Chemistry - A European Journal, 27(38), pp. 9748–9752. Available at: https://doi.org/10.1002/chem.202101313.

Wu, Xingxing et al. (2021) ‘Catalyst control over sixfold stereogenicity’, Nature Catalysis, 4(6), pp. 457–462. Available at: https://doi.org/10.1038/s41929-021-00615-z.

Raps, F.C. et al. (2020) ‘Catalyst‐Controlled Transannular Polyketide Cyclization Cascades: Selective Folding of Macrocyclic Polyketides’, Angewandte Chemie. 14.07.2020, 132(42), pp. 18548–18552. Available at: https://doi.org/10.1002/ange.202005733.

Fäseke, Vincent C., Raps, Felix C. and Sparr, Christof (2020) ‘Polyketide Cyclizations for the Synthesis of Polyaromatics’, Angewandte Chemie. 03.12.2019, 132(18), pp. 7039–7047. Available at: https://doi.org/10.1002/ange.201911255.

Bourgeois, Frederic et al. (2020) ‘Catalyst Repurposing Sequential Catalysis by Harnessing Regenerated Prolinamide Organocatalysts as Transfer Hydrogenation Ligands’, Organic Letters, 22(1), pp. 110–115. Available at: https://doi.org/10.1021/acs.orglett.9b04033.

Castrogiovanni, Alessandro et al. (2020) ‘JoyaPhos: An Atropisomeric Teraryl Monophosphine Ligand’, Chemistry - A European Journal, 26(44), pp. 9864–9868. Available at: https://doi.org/10.1002/chem.202001269.

Fäseke, Vincent C., Raps, Felix C. and Sparr, Christof (2020) ‘Polyketide Cyclizations for the Synthesis of Polyaromatics’, Angewandte Chemie (International ed. in English), 59(18), pp. 6975–6983. Available at: https://doi.org/10.1002/anie.201911255.

Fischer, Christian et al. (2020) ‘Modulation of Acridinium Organophotoredox Catalysts Guided by Photophysical Studies’, ACS Catalysis, 10(1), pp. 210–215. Available at: https://doi.org/10.1021/acscatal.9b03606.

Moser, Daniel et al. (2020) ‘Catalytic Cascade Reactions Inspired by Polyketide Biosynthesis’, Chimia, 74(9), pp. 699–703. Available at: https://doi.org/10.2533/chimia.2020.699.

Raps, Felix C. et al. (2020) ‘Catalyst-Controlled Transannular Polyketide Cyclization Cascades: Selective Folding of Macrocyclic Polyketides’, Angewandte Chemie International Edition, 59(42), pp. 18390–18394. Available at: https://doi.org/10.1002/anie.202005733.

Witzig, Reto M. and Sparr, Christof (2020) ‘Synthesis of Enantioenriched Tetra-ortho-3,3′-substituted Biaryls by Small-Molecule-Catalyzed Noncanonical Polyketide Cyclizations’, Synlett, 31(1), pp. 13–20. Available at: https://doi.org/10.1055/s-0039-1690215.

Wu, Xingxing et al. (2020) ‘Catalyst-Control over Sixfold Stereogenicity’, ChemRxiv [Preprint]. Cambridge University Press. Available at: https://doi.org/10.26434/chemrxiv.12213362.v1.

Zilate, Bouthayna, Fischer, Christian and Sparr, Christof (2020) ‘Design and application of aminoacridinium organophotoredox catalysts’, Chemical Communications, 56(12), pp. 1767–1775. Available at: https://doi.org/10.1039/c9cc08524f.

Castrogiovanni, Alessandro et al. (2019) ‘Shortcuts for Electron-Transfer through the Secondary Structure of Helical Oligo-1,2-Naphthylenes’, Chemistry - A European Journal, 25, pp. 16748–16754. Available at: https://doi.org/10.1002/chem.201904771.

Jakobi, Markus et al. (2019) ‘A General Protocol for Robust Sonogashira Reactions in Micellar Medium’, Helvetica Chimica Acta, 102(3), p. e1900024. Available at: https://doi.org/10.1002/hlca.201900024.

Kaldre, Dainis et al. (2019) ‘Interface-rich Aqueous Systems for Sustainable Chemical Synthesis’, Chimia, 73(9), pp. 714–719. Available at: https://doi.org/10.2533/chimia.2019.714.

Sparr, Christof (2019) ‘Author Profile’, Angewandte Chemie International Edition, 58, p. 944. Available at: https://doi.org/10.1002/anie.201809582.

Witzig, Reto M. et al. (2019) ‘Atroposelective synthesis of tetra-ortho-substituted biaryls by catalyst-controlled non-canonical polyketide cyclizations’, Nature Catalysis, 2(10), pp. 925–930. Available at: https://doi.org/10.1038/s41929-019-0345-0.

Zilate, Bouthayna et al. (2019) ‘Scalable Synthesis of Acridinium Catalysts for Photoredox Deuterations’, Synthesis, 51(23), pp. 4359–4365. Available at: https://doi.org/10.1055/s-0039-1690694.

Fischer, Christian and Sparr, Christof (2018) ‘Direct Transformation of Esters into Heterocyclic Fluorophores’, Angewandte Chemie International Edition, 57(9), pp. 2436–2440. Available at: https://doi.org/10.1002/anie.201711296.

Fischer, Christian and Sparr, Christof (2018) ‘Synthesis of 1,5-Bifunctional Organolithium Reagents by Double Directed ortho-Metalation: Direct Transformation of Esters into 1,8-Dimethoxy-Acridinium Salts’, Tetrahedron, 74(38), pp. 5486–5493. Available at: https://doi.org/10.1016/j.tet.2018.04.060.

Fischer, Christian and Sparr, Christof (2018) ‘Configurationally Stable Atropisomeric Acridinium Fluorophores’, Synlett, 29(16), pp. 2176–2180. Available at: https://doi.org/10.1055/s-0037-1610233.

Grogg, Marcel et al. (2018) ‘Cell penetration, herbicidal activity, and in-vivo-toxicity of oligo-arginine derivatives and of novel guanidinium-rich compounds derived from the biopolymer cyanophycin’, Helvetica Chimica Acta, 101(10), p. e1800112. Available at: https://doi.org/10.1002/hlca.201800112.

Link, Achim and Sparr, Christof (2018) ‘Stereoselective Arene-Formation (Review)’, Chemical Society Reviews, 47(11), pp. 3804–3815. Available at: https://doi.org/10.1039/c7cs00875a.

Link, Achim and Sparr, Christof (2018) ‘Remote Central-to-Axial Chirality Conversion: Direct Atroposelective Ester to Biaryl Transformation’, Angewandte Chemie International Edition, 57(24), pp. 7136–7139. Available at: https://doi.org/10.1002/anie.201803472.

Lotter, Dominik et al. (2018) ‘Catalyst-Controlled Stereodivergent Synthesis of Atropisomeric Multi-Axis Systems’, ACS Central Science, 4(5), pp. 656–660. Available at: https://doi.org/10.1021/acscentsci.8b00204.

Lotter, Dominik and Sparr, Christof (2018) ‘Diaryl Magnesium Lithium Alkoxides Derived from (Z)‐4‐(2‐Bromophenyl)but‐3‐en‐1‐ol’, Encyclopedia of Reagents for Organic Synthesis [Preprint]. Available at: https://doi.org/10.1002/047084289x.rn02170.

Zilate, Bouthayna, Castrogiovanni, Alessandro and Sparr, Christof (2018) ‘Catalyst-Controlled Stereoselective Synthesis of Atropisomers (Perspective)’, ACS Catalysis, 8(4), pp. 2981–2988. Available at: https://doi.org/10.1021/acscatal.7b04337.

Fäseke, Vincent C. et al. (2017) ‘Catalytic Arene-forming Aldol Condensation: Stereoselective Synthesis of Rotationally Restricted Aromatic Compounds’, Chimia, 71(9), pp. 596–599. Available at: https://doi.org/10.2533/chimia.2017.596.

Link, Achim, Fischer, Christian and Sparr, Christof (2017) ‘A 1,5-Bifunctional Organomagnesium Reagent for the Synthesis of Disubstituted Anthracenes and Anthrones’, Synthesis, 49(2), pp. 397–402. Available at: https://doi.org/10.1055/s-0036-1588087.

Witzig, Reto M. et al. (2017) ‘Stereoselective Arene-Forming Aldol Condensation: Catalyst-Controlled Synthesis of Axially Chiral Compounds’, Chemistry - A European Journal, 23(53), pp. 12960–12966. Available at: https://doi.org/10.1002/chem.201702471.

Braeuer, Thomas M., Zhang, Qi and Tiefenbacher, Konrad (2016) ‘Iminium Catalysis inside a Self-Assembled Supramolecular Capsule: Modulation of Enantiomeric Excess’, Angewandte Chemie International Edition, 55(27), pp. 7698–701. Available at: https://doi.org/10.1002/anie.201602382.

Catti, Lorenzo, Zhang, Qi and Tiefenbacher, Konrad (2016) ‘Advantages of Catalysis in Self-Assembled Molecular Capsules’, Chemistry - A European Journal, 22(27), pp. 9060–6. Available at: https://doi.org/10.1002/chem.201600726.

Fäseke, Vincent C. and Sparr, Christof (2016) ‘Stereoselective Arene-Forming Aldol Condensation: Synthesis of Axially Chiral Aromatic Amides’, Angewandte Chemie International Edition, 55(25), pp. 7261–4. Available at: https://doi.org/10.1002/anie.201602689.

Lotter, Dominik et al. (2016) ‘Stereoselective Arene-Forming Aldol Condensation: Synthesis of Configurationally Stable Oligo-1,2-naphthylenes’, Angewandte Chemie International Edition, 55(8), pp. 2920–2923. Available at: https://doi.org/10.1002/anie.201510259.

Thamm, Irene et al. (2016) ‘A six-step total synthesis of α-thujone and d6-α-thujone, enabling facile access to isotopically labelled metabolites’, Chemical Communications, 52(78), pp. 11701–11703. Available at: https://doi.org/10.1039/c6cc05376a.

Link, Achim, Fischer, Christian and Sparr, Christof (2015) ‘Direct Transformation of Esters into Arenes with 1,5-Bifunctional Organo­magnesium Reagents’, Angewandte Chemie International Edition, 54(41), pp. 12163–12166. Available at: https://doi.org/10.1002/anie.201505414.

Sparr, Christof (2015) ‘Scientific Fireworks to Celebrate the 50th Anniversary of the Bürgenstock Conference’, Angewandte Chemie International Edition, 54(30), pp. 8594–6. Available at: https://doi.org/10.1002/anie.201504945.

Rey, Y.P. et al. (2014) ‘Molecular design exploiting a fluorine gauche effect as a stereoelectronic trigger’, European Journal of Organic Chemistry, 2014(6), pp. 1202–1211. Available at: https://doi.org/10.1002/ejoc.201301730.

Link, Achim and Sparr, Christof (2014) ‘Organocatalytic Atroposelective Aldol Condensation: Synthesis of Axially Chiral Biaryls by Arene Formation’, Angewandte Chemie International Edition, 53(21), pp. 5458–61. Available at: https://doi.org/10.1002/anie.201402441.

Sparr, C. et al. (2013) ‘Syntheses, receptor bindings, in vitro and in vivo stabilities and biodistributions of DOTA-neurotensin(8-13) derivatives containing β-amino acid residues - A lesson about the importance of animal experiments’, Chemistry and Biodiversity, 10(12), pp. 2101–2121. Available at: https://doi.org/10.1002/cbdv.201300331.

Sparr, C. et al. (2013) ‘Improved efficacy of fosmidomycin against plasmodium and mycobacterium species by combination with the cell-penetrating peptide octaarginine’, Antimicrobial Agents and Chemotherapy, 57(10), pp. 4689–4698. Available at: https://doi.org/10.1128/AAC.00427-13.

Fernández, A. et al. (2013) ‘Synthesis of (-)-hennoxazole A: Integrating batch and flow chemistry methods’, Synlett, 24(4), pp. 514–518. Available at: https://doi.org/10.1055/s-0032-1318109.

Sparr, C., Zimmer, L.E. and Gilmour, R. (2013) ‘Exploiting Fluorine Conformational Effects in Organocatalyst Design: The Fluorine-Iminium Ion Gauche Effect’. Wiley-VCH, pp. 117–124. Available at: https://doi.org/10.1002/9783527652235.ch16.