1
|
Wang R, Martínez S, Schwarzmann J, Zhao CZ, Ramler J, Lichtenberg C, Wang YM. Transition Metal Mimetic π-Activation by Cationic Bismuth(III) Catalysts for Allylic C-H Functionalization of Olefins Using C═O and C═N Electrophiles. J Am Chem Soc 2024; 146:22122-22128. [PMID: 39102739 PMCID: PMC11328129 DOI: 10.1021/jacs.4c06235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
The discovery and utilization of main-group element catalysts that behave similarly to transition metal (TM) complexes have become increasingly active areas of investigation in recent years. Here, we report a series of Lewis acidic bismuth(III) complexes that allow for the catalytic allylic C(sp3)-H functionalization of olefins via an organometallic complexation-assisted deprotonation mechanism to generate products containing new C-C bonds. This heretofore unexplored mode of main-group reactivity was applied to the regioselective functionalization of 1,4-dienes and allylbenzene substrates. Experimental and computational mechanistic studies support the key steps of the proposed catalytic cycle, including the intermediacy of elusive Bi-olefin complexes and allylbismuth species.
Collapse
Affiliation(s)
- Ruihan Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Sebastián Martínez
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Johannes Schwarzmann
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Christopher Z Zhao
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jacqueline Ramler
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Crispin Lichtenberg
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Yi-Ming Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| |
Collapse
|
2
|
Wiesinger M, Knüpfer C, Elsen H, Mai J, Langer J, Harder S. Heterometallic Mg−Ba Hydride Clusters in Hydrogenation Catalysis. ChemCatChem 2021. [DOI: 10.1002/cctc.202101071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Michael Wiesinger
- Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Christian Knüpfer
- Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Holger Elsen
- Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Jonathan Mai
- Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Jens Langer
- Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| |
Collapse
|
3
|
Thum K, Martin J, Elsen H, Eyselein J, Stiegler L, Langer J, Harder S. Lewis Acidic Cationic Strontium and Barium Complexes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100345] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Katharina Thum
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Johannes Martin
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Holger Elsen
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Jonathan Eyselein
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Lena Stiegler
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Jens Langer
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Sjoerd Harder
- Chair of Inorganic and Organometallic Chemistry Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| |
Collapse
|
4
|
Sharma MK, Wölper C, Haberhauer G, Schulz S. Vielseitiges Gallaphosphen: Von einem Ga‐P‐Ga‐Heteroallylkation über CO
2
‐Speicherung hin zu C(sp
3
)‐H‐Bindungsaktivierung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014381] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mahendra K. Sharma
- Institut für Anorganische Chemie und Center für Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Christoph Wölper
- Institut für Anorganische Chemie und Center für Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Gebhard Haberhauer
- Institut für Organische Chemie Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Stephan Schulz
- Institut für Anorganische Chemie und Center für Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| |
Collapse
|
5
|
Sharma MK, Wölper C, Haberhauer G, Schulz S. Multi-Talented Gallaphosphene for Ga-P-Ga Heteroallyl Cation Generation, CO 2 Storage, and C(sp 3 )-H Bond Activation. Angew Chem Int Ed Engl 2021; 60:6784-6790. [PMID: 33368922 PMCID: PMC7986129 DOI: 10.1002/anie.202014381] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Indexed: 11/12/2022]
Abstract
Gallaphosphene L(Cl)GaPGaL (2; L=HC[C(Me)N(2,6-i-Pr2 C6 H3 )]2 ), which is synthesized by reaction of LGa(Cl)PCO (1) with LGa, reacts with [Na(OCP)(dioxane)2.5 ] to LGa(OCP)PGaL (3), whereas chloride abstraction with LiBArF 4 yields [LGaPGaL][BArF 4 ] (4; BArF 4 =B(C6 F5 )4 ). 4 represents a heteronuclear analog of the allyl cation according to quantum chemical calculations. Remarkably, 2 reversibly reacts with CO2 to yield L(Cl)Ga-P[μ-C(O)O]2 GaL (5), while reactions with acetophenone and acetone selectively give compounds 6 and 7 by C(sp3 )-H bond activation.
Collapse
Affiliation(s)
- Mahendra K. Sharma
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Christoph Wölper
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Gebhard Haberhauer
- Institute of Organic ChemistryUniversity of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Stephan Schulz
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| |
Collapse
|
6
|
Thum K, Friedrich A, Pahl J, Elsen H, Langer J, Harder S. Unsupported Mg-Alkene Bonding. Chemistry 2021; 27:2513-2522. [PMID: 33197075 PMCID: PMC7898539 DOI: 10.1002/chem.202004716] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Indexed: 01/23/2023]
Abstract
The first intermolecular early main group metal-alkene complexes were isolated. This was enabled by using highly Lewis acidic Mg centers in the Lewis base-free cations (Me BDI)Mg+ and (tBu BDI)Mg+ with B(C6 F5 )4 - counterions (Me BDI=CH[C(CH3 )N(DIPP)]2 , tBu BDI=CH[C(tBu)N(DIPP)]2 , DIPP=2,6-diisopropylphenyl). Coordination complexes with various mono- and bis-alkene ligands, typically used in transition metal chemistry, were structurally characterized for 1,3-divinyltetramethyldisiloxane, 1,5-cyclooctadiene, cyclooctene, 1,3,5-cycloheptatriene, 2,3-dimethylbuta-1,3-diene, and 2-ethyl-1-butene. In all cases, asymmetric Mg-alkene bonding with a short and a long Mg-C bond is observed. This asymmetry is most extreme for Mg-(H2 C=CEt2 ) bonding. In bromobenzene solution, the Mg-alkene complexes are either dissociated or in a dissociation equilibrium. A DFT study and AIM analysis showed that the C=C bonds hardly change on coordination and there is very little alkene→Mg electron transfer. The Mg-alkene bonds are mainly electrostatic and should be described as Mg2+ ion-induced dipole interactions.
Collapse
Affiliation(s)
- Katharina Thum
- Chair of Inorganic and Organometallic ChemistryUniversität Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Alexander Friedrich
- Chair of Inorganic and Organometallic ChemistryUniversität Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Jürgen Pahl
- Chair of Inorganic and Organometallic ChemistryUniversität Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Holger Elsen
- Chair of Inorganic and Organometallic ChemistryUniversität Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Jens Langer
- Chair of Inorganic and Organometallic ChemistryUniversität Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Sjoerd Harder
- Chair of Inorganic and Organometallic ChemistryUniversität Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| |
Collapse
|
7
|
Seymen A, Opper U, Voß A, Brieger L, Otte F, Unkelbach C, O'Shea DF, Strohmann C. Aminopotassiation by Mixed Potassium/Lithium Amides: A Synthetic Path to Difficult to Access Phenethylamine Derivates. Angew Chem Int Ed Engl 2020; 59:22500-22504. [PMID: 32846026 PMCID: PMC7756473 DOI: 10.1002/anie.202009318] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Indexed: 11/24/2022]
Abstract
Insights gained from a comparison of aminometalation reactions with lithium amides, potassium amides and mixed lithium/potassium amides are presented. A combination of structural characterization, DFT calculations and electrophile reactions of aminometalated intermediates has shown the advantages of using a mixed metal strategy. While potassium amides fail to add, the lithium amides are uncontrollable and eliminated, yet the mixed K/Li amides deliver the best of both systems. Aminopotassiation proceeds to form the alkylpotassium species which has enhanced stability over its lithium counterpart allowing for its isolation and thereby its further characterization.
Collapse
Affiliation(s)
- Andreas Seymen
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Ulrike Opper
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Andreas Voß
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Lukas Brieger
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Felix Otte
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Christian Unkelbach
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Donal F O'Shea
- Department of Pharmaceutical and Medicinal Chemistry, Royal College Surgeons, 123 St. Stephen's Green, Dublin 2, Ireland
| | - Carsten Strohmann
- Inorganic Chemistry, TU Dortmund, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| |
Collapse
|
8
|
Hermann A, Opper U, Voß A, Brieger L, Otte F, Unkelbach C, O'Shea DF, Strohmann C. Aminometallierung mit einem gemischten K/Li‐Amid: Eine Syntheseroute zu schwer zugänglichen Phenethylamin‐Derivaten. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andreas Hermann
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Ulrike Opper
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Andreas Voß
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Lukas Brieger
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | - Felix Otte
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| | | | - Donal F. O'Shea
- Department of Pharmaceutical and Medicinal Chemistry Royal College Surgeons 123 St. Stephen's Green Dublin 2 Irland
| | - Carsten Strohmann
- Anorganische Chemie TU Dortmund Otto-Hahn-Str. 6 44227 Dortmund Deutschland
| |
Collapse
|
9
|
Dabringhaus P, Schorpp M, Scherer H, Krossing I. A Highly Lewis Acidic Strontium ansa-Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization. Angew Chem Int Ed Engl 2020; 59:22023-22027. [PMID: 32776669 PMCID: PMC7756322 DOI: 10.1002/anie.202010019] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Indexed: 12/18/2022]
Abstract
The potential of a dicationic strontium ansa‐arene complex for Lewis acid catalysis has been explored. The key to its synthesis was a simple salt metathesis from SrI2 and 2 Ag[Al(ORF)4], giving the base‐free strontium‐perfluoroalkoxyaluminate Sr[Al(ORF)4]2 (ORF=OC(CF3)3). Addition of an ansa‐arene yielded the highly Lewis acidic, dicationic strontium ansa‐arene complex. In preliminary experiments, the complex was successfully applied as a catalyst in CO2‐reduction to CH4 and a surprisingly controlled isobutylene polymerization reaction.
Collapse
Affiliation(s)
- Philipp Dabringhaus
- Institut für anorganische und analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg i.Br., Germany
| | - Marcel Schorpp
- Institut für anorganische und analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg i.Br., Germany
| | - Harald Scherer
- Institut für anorganische und analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg i.Br., Germany
| | - Ingo Krossing
- Institut für anorganische und analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg i.Br., Germany
| |
Collapse
|
10
|
Dabringhaus P, Schorpp M, Scherer H, Krossing I. A Highly Lewis Acidic Strontium
ansa
‐Arene Complex for Lewis Acid Catalysis and Isobutylene Polymerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Philipp Dabringhaus
- Institut für anorganische und analytische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg i.Br. Germany
| | - Marcel Schorpp
- Institut für anorganische und analytische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg i.Br. Germany
| | - Harald Scherer
- Institut für anorganische und analytische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg i.Br. Germany
| | - Ingo Krossing
- Institut für anorganische und analytische Chemie Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg i.Br. Germany
| |
Collapse
|
11
|
Intramolecular Alkene Hydroamination with Hybrid Catalysts Consisting of a Metal Salt and a Neutral Organic Base. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
12
|
Brand S, Causero A, Elsen H, Pahl J, Langer J, Harder S. Ligand Effects in Calcium Catalyzed Ketone Hydroboration. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000264] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Steffen Brand
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Andrea Causero
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Holger Elsen
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Jürgen Pahl
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Jens Langer
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry University Erlangen‐Nürnberg Egerlandstrasse 1 91058 Erlangen Germany
| |
Collapse
|
13
|
Sharma MK, Blomeyer S, Neumann B, Stammler HG, Ghadwal RS. Crystalline Divinyldiarsenes and Cleavage of the As=As Bond. Chemistry 2019; 25:8249-8253. [PMID: 31017700 DOI: 10.1002/chem.201901857] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Indexed: 11/07/2022]
Abstract
The first divinyldiarsenes [{(NHC)C(Ph)}As]2 (NHC=IPr 3 a, SIPr 3 b; IPr=C{(NAr)CH}2 ; SIPr=C{(NAr)CH2 }2 ; Ar=2,6-iPr2 C6 H3 ) are reported. Compounds 3 a and 3 b were prepared by the reduction of corresponding chlorides {(NHC)C(Ph)}AsCl2 (NHC=IPr 2 a, SIPr 2 b) with Mg. Calculations revealed a small HOMO-LUMO energy gap of 3.86 (3 a) and 4.24 eV (3 b). Treatment of 3 a with (Me2 S)AuCl led to the cleavage of the As=As bond to restore 2 a, which is expected to proceed via the diarsane [{(IPr)C(Ph)}AsCl]2 (4). Remarkably, 4 as well as 2 a can be selectively accessed on treatment of 3 a with an appropriate amount of C2 Cl6 . Moreover, 3 a readily reacts with PhEEPh (E=Se or Te) at room temperature to give {(IPr)C(Ph)}As(EPh)2 (E=Se 5 a; Te 5 b), revealing the cleavage of As=As and E-E bonds and the formation of As-E bonds. Such highly selective stepwise oxidation (3 a→4→2 a) and bond metathesis (3 a→5 a,b) reactions are unprecedented in main-group chemistry.
Collapse
Affiliation(s)
- Mahendra K Sharma
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany
| | - Sebastian Blomeyer
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany
| | - Beate Neumann
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany
| | - Hans-Georg Stammler
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany
| | - Rajendra S Ghadwal
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany
| |
Collapse
|
14
|
Kroesen U, Unkelbach C, Schildbach D, Strohmann C. Controlling the Coordination Sphere of Alkyllithiums Results in Selective Reactions with Allylic Amines. Angew Chem Int Ed Engl 2017; 56:14164-14168. [PMID: 28940968 DOI: 10.1002/anie.201708620] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Indexed: 11/09/2022]
Abstract
Described herein is a selective way to control the reaction of allylic amines with metalorganic bases depending on the amine handle as well as the metalorganic base is used. Depending on the number of coordinating groups within the amine handle either a selective carbometalation or deprotonation reaction can be performed. By changing the alkali metal within the base from lithium to either sodium or potassium, a change of chemoselectivity takes place and the reaction of piperidinoallylamine can be controlled.
Collapse
Affiliation(s)
- Ulrike Kroesen
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Christian Unkelbach
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Daniel Schildbach
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Carsten Strohmann
- Anorganische Chemie, Technische, Universität Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| |
Collapse
|
15
|
Kroesen U, Unkelbach C, Schildbach D, Strohmann C. Controlling the Coordination Sphere of Alkyllithiums Results in Selective Reactions with Allylic Amines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ulrike Kroesen
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Christian Unkelbach
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Daniel Schildbach
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Carsten Strohmann
- Anorganische Chemie; Technische; Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Germany
| |
Collapse
|
16
|
Yang Y, Wang H, Ma H. Unprecedented Reaction Pathway of Sterically Crowded Calcium Complexes: Sequential C−N Bond Cleavage Reactions Induced by C−H Bond Activations. Chem Asian J 2016; 12:239-247. [DOI: 10.1002/asia.201601497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 11/28/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Yang Yang
- Shanghai Key Laboratory of Functional Materials Chemistry and Laboratory of Organometallic Chemistry; School of Chemistry & Molecular Engineering; East China University of Science and Technology; P.O. Box 310, 130 Meilong Road 200237 Shanghai P.R. China
| | - Haobing Wang
- Shanghai Key Laboratory of Functional Materials Chemistry and Laboratory of Organometallic Chemistry; School of Chemistry & Molecular Engineering; East China University of Science and Technology; P.O. Box 310, 130 Meilong Road 200237 Shanghai P.R. China
| | - Haiyan Ma
- Shanghai Key Laboratory of Functional Materials Chemistry and Laboratory of Organometallic Chemistry; School of Chemistry & Molecular Engineering; East China University of Science and Technology; P.O. Box 310, 130 Meilong Road 200237 Shanghai P.R. China
| |
Collapse
|
17
|
De Tullio M, Hernán-Gómez A, Livingstone Z, Clegg W, Kennedy AR, Harrington RW, Antiñolo A, Martínez A, Carrillo-Hermosilla F, Hevia E. Structural and Mechanistic Insights into s-Block Bimetallic Catalysis: Sodium Magnesiate-Catalyzed Guanylation of Amines. Chemistry 2016; 22:17646-17656. [PMID: 27786387 DOI: 10.1002/chem.201602906] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Indexed: 11/06/2022]
Abstract
To advance the catalytic applications of s-block mixed-metal complexes, sodium magnesiate [NaMg(CH2 SiMe3 )3 ] (1) is reported as an efficient precatalyst for the guanylation of a variety of anilines and secondary amines with carbodiimides. First examples of hydrophosphination of carbodiimides by using a Mg catalyst are also described. The catalytic ability of the mixed-metal system is much greater than that of its homometallic components [NaCH2 SiMe3 ] and [Mg(CH2 SiMe3 )2 ]. Stoichiometric studies suggest that magnesiate amido and guanidinate complexes are intermediates in these catalytic routes. Reactivity and kinetic studies imply that these guanylation reactions occur via (tris)amide intermediates that react with carbodiiimides in insertion steps. The rate law for the guanylation of N,N'-diisopropylcarbodiimide with 4-tert-butylaniline catalyzed by 1 is first order with respect to [amine], [carbodiimide], and [catalyst], and the reaction shows a large kinetic isotopic effect, which is consistent with an amine-assisted rate-determining carbodiimide insertion transition state. Studies to assess the effect of sodium in these transformations denote a secondary role with little involvement in the catalytic cycle.
Collapse
Affiliation(s)
- Marco De Tullio
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Alberto Hernán-Gómez
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Zoe Livingstone
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - William Clegg
- School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Ross W Harrington
- School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Antonio Antiñolo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha Campus Universitario, 13071, Ciudad Real, Spain
| | - Antonio Martínez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha Campus Universitario, 13071, Ciudad Real, Spain
| | - Fernando Carrillo-Hermosilla
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha Campus Universitario, 13071, Ciudad Real, Spain
| | - Eva Hevia
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| |
Collapse
|