Álcarazo, Manuel

[["dc.bibliographiccitation.firstpage","22779"],["dc.bibliographiccitation.issue","50"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","22784"],["dc.bibliographiccitation.volume","59"],["dc.contributor.author","Johannsen, Tim"],["dc.contributor.author","Golz, Christopher"],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2021-04-14T08:32:23Z"],["dc.date.available","2021-04-14T08:32:23Z"],["dc.date.issued","2020"],["dc.description.abstract","Abstract A series of structurally differentiated α‐cationic phospholes containing cyclopropenium, imidazolium, and iminium substituents has been synthesized by reaction of chlorophosphole 1 with the corresponding stable carbenes. Evaluation of the donor properties of these compounds reveals that their strong π‐acceptor character is heavily influenced by the nature of the cationic group. The coordination chemistry of these newly prepared ligands towards AuI centers is also described and their unique electronic properties exploited in catalysis. Interestingly, α‐cationic phosphole containing catalysts were not only able to accelerate model cycloisomerization reactions, but also to efficiently discriminate between concurrent reaction pathways, avoiding the formation of undesired product mixtures."],["dc.description.abstract","A series of α‐cationic phosphole ligands has been synthesized and their use as ancillary ligands explored in Au‐catalysis. If compared with non‐heterocyclic α‐cationic phospines, higher reaction rates and better control of the stereoselectivity are obtained. image"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659"],["dc.description.sponsorship","H2020 European Research Council http://dx.doi.org/10.13039/100010663"],["dc.identifier.doi","10.1002/anie.202009303"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83906"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1521-3773"],["dc.relation.issn","1433-7851"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made."],["dc.title","α‐Cationic Phospholes: Synthesis and Applications as Ancillary Ligands"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Chemistry Letters"],["dc.bibliographiccitation.lastpage","13"],["dc.bibliographiccitation.volume","48"],["dc.contributor.author","Nicholls, Leo D. M."],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2019-11-01T13:14:37Z"],["dc.date.available","2019-11-01T13:14:37Z"],["dc.date.issued","2019"],["dc.description.abstract","The unique architecture of α-cationic phosphanes, in which one or more positively charged groups are directly attached to the phosphorus center dramatically affects both the physicochemical properties of the corresponding ligands and their donor/acceptor properties. Specifically, the introduction of charges increase the solubility of the resulting ligand in polar media allowing the derived metal complexes to be utilized in highly polar solvents such as ionic liquids, or to be easily separated from typical organic media. On the other hand, the presence of a cationic group in close proximity to the donor position weakens the σ-donor ability of the P-atom when compared with neutral analogues, and concomitantly enhances the π-acceptor character of the resulting ligand. In this Highlight Review these aspects are overviewed, putting special emphasis on the implications for transition metal catalyzed processes. Recent developments are critically evaluated and future perspectives for this exciting area of ligand design are discussed."],["dc.identifier.doi","10.1246/cl.180810"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62557"],["dc.language.iso","en"],["dc.relation.issn","0366-7022"],["dc.relation.issn","1348-0715"],["dc.title","Applications of α-Cationic Phosphines as Ancillary Ligands in Homogeneous Catalysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1428"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of the American Chemical Society"],["dc.bibliographiccitation.lastpage","1431"],["dc.bibliographiccitation.volume","139"],["dc.contributor.author","Gonzalez-Fernandez, Elisa"],["dc.contributor.author","Nicholls, Leo D. M."],["dc.contributor.author","Schaaf, Lukas D."],["dc.contributor.author","Farès, Christophe"],["dc.contributor.author","Lehmann, Christian W."],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2018-11-07T10:28:08Z"],["dc.date.available","2018-11-07T10:28:08Z"],["dc.date.issued","2017"],["dc.description.abstract","The use of alpha-cationic phosphonites derived from TADDOL as ancillary ligands has allowed a highly regio- and enantioselective synthesis of substituted [6]-carbohelicenes by sequential Au-catalyzed intramolecular hydroarylation of diynes. Key for these results is the modular structure of these new ligands, and the enhanced reactivity that they impart to Au(I)-centers after coordination."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [Al 1348/5-1]"],["dc.identifier.doi","10.1021/jacs.6b12443"],["dc.identifier.isi","000393355600020"],["dc.identifier.pmid","28112916"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43358"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0002-7863"],["dc.title","Enantioselective Synthesis of [6]Carbohelicenes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1570"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Bioconjugate Chemistry"],["dc.bibliographiccitation.lastpage","1575"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Laserna, Victor"],["dc.contributor.author","Istrate, Alena"],["dc.contributor.author","Kafuta, Kevin"],["dc.contributor.author","Hakala, Tuuli A."],["dc.contributor.author","Knowles, Tuomas P. J."],["dc.contributor.author","Alcarazo, Manuel"],["dc.contributor.author","Bernardes, Gonçalo J. L."],["dc.date.accessioned","2021-10-01T09:57:40Z"],["dc.date.available","2021-10-01T09:57:40Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1021/acs.bioconjchem.1c00317"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/89891"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-469"],["dc.relation.eissn","1520-4812"],["dc.relation.issn","1043-1802"],["dc.title","Protein Conjugation by Electrophilic Alkynylation Using 5-(Alkynyl)dibenzothiophenium Triflates"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","10457"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","ACS Catalysis"],["dc.bibliographiccitation.lastpage","10463"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Tinnermann, Hendrik"],["dc.contributor.author","Nicholls, Leo D. M."],["dc.contributor.author","Johannsen, Tim"],["dc.contributor.author","Wille, Christian"],["dc.contributor.author","Golz, Christopher"],["dc.contributor.author","Goddard, Richard"],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2020-12-10T15:22:34Z"],["dc.date.available","2020-12-10T15:22:34Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1021/acscatal.8b03271"],["dc.identifier.eissn","2155-5435"],["dc.identifier.issn","2155-5435"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73449"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","N -Arylpyridiniophosphines: Synthesis, Structure, and Applications in Au(I) Catalysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","anie.202207450"],["dc.bibliographiccitation.issue","35"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.volume","61"],["dc.contributor.affiliation","Karnbrock, Simon B. H.; 1\r\nInstitut für Organische und Biomolekulare Chemie\r\nGeorg-August-Universität Göttingen\r\nTammannstr. 2 37077 Göttingen Germany"],["dc.contributor.affiliation","Golz, Christopher; 1\r\nInstitut für Organische und Biomolekulare Chemie\r\nGeorg-August-Universität Göttingen\r\nTammannstr. 2 37077 Göttingen Germany"],["dc.contributor.affiliation","Mata, Ricardo A.; 2\r\nInstitut für Physikalische Chemie\r\nGeorg-August-Universität Göttingen\r\nTammannstr. 6 37077 Göttingen Germany"],["dc.contributor.affiliation","Alcarazo, Manuel; 1\r\nInstitut für Organische und Biomolekulare Chemie\r\nGeorg-August-Universität Göttingen\r\nTammannstr. 2 37077 Göttingen Germany"],["dc.contributor.author","Alcarazo, Manuel"],["dc.contributor.author","Karnbrock, Simon B. H."],["dc.contributor.author","Golz, Christopher"],["dc.contributor.author","Mata, Ricardo A."],["dc.date.accessioned","2022-07-01T07:35:49Z"],["dc.date.available","2022-07-01T07:35:49Z"],["dc.date.issued","2022"],["dc.date.updated","2022-11-11T13:13:57Z"],["dc.description.abstract","Abstract\r\nWe present herein the synthesis of a nearly square‐pyramidal chlorophosphorane supported by the tetradentate bis(amidophenolate) ligand, N,N′‐bis(3,5‐di‐tert‐butyl‐2‐phenoxy)‐1,2‐phenylenediamide. After chloride abstraction the resulting phosphonium cation efficiently promotes the disproportionation of 1,2‐diphenylhydrazine to aniline and azobenzene. Mechanistic studies, spectroscopic analyses and theoretical calculations suggest that this unprecedented reactivity mode for PV‐centres is induced by the high electrophilicity at the cationic PV‐center, which originates from the geometry constraints imposed by the rigid pincer ligand, combined with the ability of the o‐amidophenolate moieties to act as electron reservoir. This study illustrates the promising role of cooperativity between redox‐active ligands and phosphorus for the design of organocatalysts able to promote redox processes."],["dc.description.abstract","An unprecedented P‐based catalyst able to promote hydrazine disproportionation has been synthesized. The available set of experimental results and theoretical calculations suggest that this reactivity is unlocked by the cooperation between a redox‐active bis(amidophenolate) ligand and the highly electrophilic central P‐atom.\r\n\r\nimage"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1002/anie.202207450"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112272"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-581"],["dc.relation.eissn","1521-3773"],["dc.relation.issn","1433-7851"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes."],["dc.rights.uri","http://onlinelibrary.wiley.com/termsAndConditions#vor"],["dc.title","Ligand Enabled Disproportionation of 1,2‐Diphenylhydrazine at a P(V)‐Center"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","23527"],["dc.bibliographiccitation.issue","52"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","23531"],["dc.bibliographiccitation.volume","59"],["dc.contributor.author","Redero, Pablo"],["dc.contributor.author","Hartung, Thierry"],["dc.contributor.author","Zhang, Jianwei"],["dc.contributor.author","Nicholls, Leo D. M."],["dc.contributor.author","Zichen, Guo"],["dc.contributor.author","Simon, Martin"],["dc.contributor.author","Golz, Christopher"],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2021-04-14T08:32:23Z"],["dc.date.available","2021-04-14T08:32:23Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1002/anie.202010021"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83904"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1521-3773"],["dc.relation.issn","1433-7851"],["dc.title","Enantioselective Synthesis of 1‐Aryl Benzo[5]helicenes Using BINOL‐Derived Cationic Phosphonites as Ancillary Ligands"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4948"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Journal of the American Chemical Society"],["dc.bibliographiccitation.lastpage","4953"],["dc.bibliographiccitation.volume","139"],["dc.contributor.author","Gu, Lianghu"],["dc.contributor.author","Wolf, Lawrence M."],["dc.contributor.author","Zielinski, Adam"],["dc.contributor.author","Thiel, Walter"],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2018-11-07T10:25:07Z"],["dc.date.available","2018-11-07T10:25:07Z"],["dc.date.issued","2017"],["dc.description.abstract","A series Of new P boolean AND P-chelating ligands constituted by a dicationic [P(H(2)Im)(2)](+2) unit (H(2)Im = 1,3-clitnethy1-4,5-dihydroimidazol-2-ylidene) and a PPh2 group connected through structurally different backbones have been synthesized. Evaluation -of their reactivity toward different metal centers provides evidence that the dicationic fragment, otherwise reluctant to coordinate metals, readily participates in the formation of chelates when embedded into such a scaffold, Moreover, it significantly enhances the Lewis acidity of the metals to which it coordinates. This property has been used to develop a Rh catalyst that efficiently triggers the hydroarylation of dienes with electron -rich aromatic molecules. Kinetic studies and deuterium -labeling experiments, as well as density functional theory calculations,. were performed in order to rationalize these findings."],["dc.identifier.doi","10.1021/jacs.7b01441"],["dc.identifier.isi","000398764000051"],["dc.identifier.pmid","28322057"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42786"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0002-7863"],["dc.title","alpha-Dicationic Chelating Phosphines: Synthesis and Application to the Hydroarylation of Dienes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","adsc.202100481"],["dc.bibliographiccitation.firstpage","3546"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","Advanced Synthesis & Catalysis"],["dc.bibliographiccitation.lastpage","3553"],["dc.bibliographiccitation.volume","363"],["dc.contributor.author","Marset, Xavier"],["dc.contributor.author","Recort‐Fornals, Martí"],["dc.contributor.author","Kpante, Malkaye"],["dc.contributor.author","Zieliński, Adam"],["dc.contributor.author","Golz, Christopher"],["dc.contributor.author","Wolf, Lawrence M."],["dc.contributor.author","Alcarazo, Manuel"],["dc.date.accessioned","2021-07-05T14:57:50Z"],["dc.date.available","2021-07-05T14:57:50Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract A series of strong π‐acceptor polyfluorinated and dicationic chelating phosphines have been synthesized and evaluated in the Rh‐catalysed dimerization of norbornadiene (NBD) into its thermodynamically more stable dimer, heptacyclo[6.6.0.02,6.03,13.04,11.05,9.010,14] tetradecane (HCTD). While dicationic ligands direct the dimerization towards HCTD, by the use of neutral polyfluorinated ancillary ligands endo‐endo‐heptacyclo [8.4.0.02,12.03,8.04,6.05,9.011,13]tetradecane (BINOR−S) is selectively obtained. In addition, a selective Pd‐catalysed arylation at position C8 of the HCTD framework is achieved by the use of a picolylamide directing group previously attached at C1. Theoretical calculations have been performed to understand the origin of that regioselectivity. image"],["dc.description.sponsorship","Deutsche Forschungsgemeischaft"],["dc.description.sponsorship","INST 186/1237-1"],["dc.description.sponsorship","Generalitat Valenciana http://dx.doi.org/10.13039/501100003359"],["dc.identifier.doi","10.1002/adsc.202100481"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/87749"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-441"],["dc.relation.eissn","1615-4169"],["dc.relation.issn","1615-4150"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes."],["dc.title","Towards an Effective Synthesis of Difunctionalized Heptacyclo [6.6.0.0 2,6 .0 3,13 .0 4,11 .0 5,9 .0 10,14 ]tetradecane: Ligand Effects on the Cage Assembly and Selective C−H Arylation Reactions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4791"],["dc.bibliographiccitation.issue","30"],["dc.bibliographiccitation.journal","European Journal of Organic Chemistry"],["dc.bibliographiccitation.lastpage","4796"],["dc.bibliographiccitation.volume","2019"],["dc.contributor.author","Rüttger, Franziska"],["dc.contributor.author","Mindt, Sonani"],["dc.contributor.author","Golz, Christopher"],["dc.contributor.author","Alcarazo, Manuel"],["dc.contributor.author","John, Michael"],["dc.date.accessioned","2019-08-05T10:03:54Z"],["dc.date.available","2019-08-05T10:03:54Z"],["dc.date.issued","2019"],["dc.description.abstract","Indocyanine green (ICG) and a second heptamethine cyanine dye were studied in detail using 2D NMR spectroscopy at multiple temperatures. In addition to the all‐trans conformation, we found in both cases a small percentage of a specific β‐γ cis isomer. Exchange rates extrapolated from 2D EXSY spectra under slow exchange conditions are in agreement with that estimated from methine 1H linewidths near coalescence and with previous photo‐isomerization studies. We could also confirm our previous hypothesis that, under aerobic conditions in combination with exposure to daylight, ICG undergoes radical dimerization specifically at the γ position. Introduction"],["dc.identifier.doi","10.1002/ejoc.201900715"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62278"],["dc.language.iso","en"],["dc.notes.intern","DeepGreen Import"],["dc.relation.issn","1434-193X"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited."],["dc.title","Isomerization and Dimerization of Indocyanine Green and a Related Heptamethine Dye"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]