1
|
Rina YA, Schmidt JAR. Alpha-metalated N, N-dimethylbenzylamine rare-earth metal complexes and their catalytic applications. Dalton Trans 2024. [PMID: 38757291 DOI: 10.1039/d4dt00826j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This perspective summarizes our group's extensive research in the realm of organometallic lanthanide complexes, while also placing the catalytic reactions supported by these species within the context of known lanthanide catalysis worldwide, with a specific focus on phosphorus-based catalytic reactions such as intermolecular hydrophosphination and hydrophosphinylation. α-Metalated N,N-dimethylbenzylamine ligands have been utilized to generate homoleptic lanthanide complexes, which have subsequently proven to be highly active lanthanum-based catalysts. The main goal of our research program has been to enhance the catalytic efficiency of lanthanum-based complexes, which began with initial successes in the stoichiometric synthesis of organometallic lanthanide complexes and utilization of these species in catalytic hydrophosphination reactions. Not only have these species supported traditional lanthanide catalysis, such as the hydrophosphination of heterocumulenes like carbodiimides, isocyanates, and isothiocyanates, but they have also been effective for a plethora of catalytic reactions tested thus far, including the hydrophosphinylation and hydrophosphorylation of nitriles, hydrophosphination and hydrophosphinylation of alkynes and alkenes, and the heterodehydrocoupling of silanes and amines. Each of these catalytic transformations is meritorious in its own right, offering new synthetic routes to generate organic scaffolds with enhanced functionality while concurrently minimizing both waste generation and energy consumption. Objectives: We aim for the research summary presented herein to inspire and encourage other researchers to investigate f-element based stoichiometric and catalytic reactions. Our efforts in this field began with the recognition that potassium salts of benzyldimethylamine preferred deprotonation at the α-position, rather than the ortho-position, and we wondered if this regiochemistry would be retained in the formation of lanthanide complexes. The pursuit of this simple idea led first to a series of structurally fascinating homoleptic organometallic lanthanide complexes with surprisingly good stability. Fundamental studies of the protonolysis chemistry of these complexes ultimately revealed highly versatile lanthanide-based precatalysts that have propelled a catalytic investigation spanning more than a decade. We anticipate that this summative perspective will animate the synthetic as well as biological communities to consider La(DMBA)3-based catalytic methods in the synthesis of functionalized organic scaffolds as an atom-economic, convenient, and efficient methodology. Ultimately, we envision our work making a positive impact on the advancement of novel chemical transformations and contributing to progress in various fields of science and technology.
Collapse
Affiliation(s)
- Yesmin Akter Rina
- Department of Chemistry & Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, The University of Toledo, 2801 W. Bancroft St. MS 602, Toledo, Ohio 43606-3390, USA.
| | - Joseph A R Schmidt
- Department of Chemistry & Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, The University of Toledo, 2801 W. Bancroft St. MS 602, Toledo, Ohio 43606-3390, USA.
| |
Collapse
|
2
|
Babula DJ, Charman RSC, Hobson JA, Mahon MF, Liptrot DJ. Dial-a-base mechanochemical synthesis of N-heterocyclic carbene copper complexes. Dalton Trans 2024; 53:3990-3993. [PMID: 38372037 DOI: 10.1039/d4dt00334a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Liquid assisted ball milling of [NHC]HBr (NHC = N-heterocyclic carbene) salts with copper(I) chloride, and a range of alkali metal complexes was shown to efficiently produce (NHC)CuX (NHC = normal or RE-NHC, X = halide, alkoxide, amide, alkyl, aryl; RE-NHC = ring-expanded NHC).
Collapse
Affiliation(s)
- Dawid J Babula
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
- Institute for Sustainability, University of Bath, Bath, BA2 7AY, UK
| | - Rex S C Charman
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
| | - Josie A Hobson
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
| | - Mary F Mahon
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
| | - David J Liptrot
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
| |
Collapse
|
3
|
Jia J, Luo J, Li W, Cui F, Pan Y, Tang H. Copper-Metallized Porous N-Heterocyclic Carbene Ligand Polymer-Catalyzed Regio- and Stereoselective 1,2-Carboboration of Alkynes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308238. [PMID: 38064182 PMCID: PMC10870022 DOI: 10.1002/advs.202308238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Indexed: 02/17/2024]
Abstract
Alkenylboronates are highly versatile building blocks and valuable reagents in the synthesis of complex molecules. Compared with that of monosubstituted alkenylboronates, the synthesis of multisubstituted alkenylboronates is challenging. The copper-catalyzed carboboration of alkynes is an operationally simple and straightforward method for synthesizing bis/trisubstituted alkenylboronates. In this work, a series of copper-metallized N-Heterocyclic Carbene (NHC) ligand porous polymer catalysts are designed and synthesized in accordance with the mechanism of carboboration. By using CuCl@POL-NHC-Ph as the optimal nanocatalyst, this study realizes the β-regio- and stereoselective (syn-addition) 1,2-carboboration of alkynes (regioselectivity up to >99:1) with satisfactory yields and a wide range of substrates. This work not only overcomes the selectivity of carboboration but also provides a new strategy for the design of nanocatalysts and their application in organic synthesis.
Collapse
Affiliation(s)
- Jun‐Song Jia
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin541004P. R. China
| | - Jin‐Rong Luo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin541004P. R. China
| | - Wen‐Hao Li
- Department of ChemistryTsinghua UniversityBeijing100084P. R. China
| | - Fei‐Hu Cui
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin541004P. R. China
| | - Ying‐Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin541004P. R. China
| | - Hai‐Tao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin541004P. R. China
| |
Collapse
|
4
|
Reuter MB, Seth DM, Javier-Jiménez DR, Finfer EJ, Beretta EA, Waterman R. Recent advances in catalytic pnictogen bond forming reactions via dehydrocoupling and hydrofunctionalization. Chem Commun (Camb) 2023; 59:1258-1273. [PMID: 36648191 DOI: 10.1039/d2cc06143k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An examination of several catalytic reactions among the group 15 elements is presented. The connections between the chemistry of the pnictogens can sometimes be challenging, but aspects of metal-pnictogen reactivity are the key. The connecting reactivity comes from metal-catalyzed transformations such as dehydrocoupling and hydrofunctionalization. Pivotal mechanistic insights from E-N heterodehydrocoupling have informed the development of highly active catalysts for these reactions. Metal-amido nucleophilicity is often at the core of this reactivity, which diverges from phosphine and arsine dehydrocoupling. Nucleophilicity connects to the earliest understanding of hydrophosphination catalysis, but more recent catalysts are leveraging enhanced insertion activity through photolysis. This photocatalysis extends to hydroarsination, which may also have more metal-arsenido nucleophilicity than anticipated. However, metal-catalyzed arsinidene chemistry foreshadowed related phosphinidene chemistry by years. This examination shows the potential for greater influence of individual discoveries and understanding to leverage new advances between these elements, and it also suggests that the chemistry of heavier elements may have more influence on what is possible with lighter elements.
Collapse
Affiliation(s)
- Matthew B Reuter
- University of Vermont, Department of Chemistry, 82 University Place, Burlington, Vermont, USA.
| | - Dennis M Seth
- University of Vermont, Department of Chemistry, 82 University Place, Burlington, Vermont, USA.
| | - Diego R Javier-Jiménez
- University of Vermont, Department of Chemistry, 82 University Place, Burlington, Vermont, USA.
| | - Emma J Finfer
- University of Vermont, Department of Chemistry, 82 University Place, Burlington, Vermont, USA.
| | - Evan A Beretta
- University of Vermont, Department of Chemistry, 82 University Place, Burlington, Vermont, USA.
| | - Rory Waterman
- University of Vermont, Department of Chemistry, 82 University Place, Burlington, Vermont, USA.
| |
Collapse
|
5
|
Dannenberg SG, Seth DM, Finfer EJ, Waterman R. Divergent Mechanistic Pathways for Copper(I) Hydrophosphination Catalysis: Understanding That Allows for Diastereoselective Hydrophosphination of a Tri-substituted Styrene. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Steven G. Dannenberg
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405-0125, United States
| | - Dennis M. Seth
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405-0125, United States
| | - Emma J. Finfer
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405-0125, United States
| | - Rory Waterman
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405-0125, United States
| |
Collapse
|
6
|
Synthesis and Characterization of Phosphinecarboxamide and Phosphinecarbothioamide, and Their Complexation with Palladium(II) Complex. Molecules 2022; 27:molecules27175564. [PMID: 36080329 PMCID: PMC9457633 DOI: 10.3390/molecules27175564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/30/2022] Open
Abstract
Reactions of isocyanates/isothiocyanates with primary and secondary phosphines without solvent at room temperature afforded phosphinecarboxamide/phosphinecarbothioamide, respectively, in excellent yields. Furthermore, palladium complex Pd(COD)Cl2 was allowed to react with Ph2PC(O)NHPh (1a) to afford [Pd{Ph2PC(O)NHPh-κP}2Cl2] (3). On the other hand, the reaction of Pd(COD)Cl2 with 1 eq. of Ph2PC(S)NHPh (2a) afforded [PdCl2{Ph2PC(S)NHPh-κP,S}] (4). In the case of a 1:2 molar ratio, [PdCl{Ph2PC(S)NHPh-κP,S}{Ph2PC(S)NHPh-κP}]Cl (5) was formed. The newly obtained compounds were fully characterized using multielement NMR measurements and elemental analyses. In addition, the molecular structures of Ph2PC(O)NH(CH2)2Cl (1j), Ph2PC(S)NHPh(4-Cl) (2c), and 3–5 were determined using single-crystal X-ray diffraction.
Collapse
|
7
|
Lau S, Hood TM, Webster RL. Broken Promises? On the Continued Challenges Faced in Catalytic Hydrophosphination. ACS Catal 2022; 12:10939-10949. [PMID: 36082053 PMCID: PMC9442583 DOI: 10.1021/acscatal.2c03144] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/10/2022] [Indexed: 11/29/2022]
Abstract
![]()
In this Perspective, we discuss what we perceive to be
the continued
challenges faced in catalytic hydrophosphination chemistry. Currently
the literature is dominated by catalysts, many of which are highly
effective, that generate the same phosphorus architectures, e.g.,
anti-Markovnikov products from the reaction of activated alkenes and
alkynes with diarylphosphines. We highlight the state of the art in
stereoselective hydrophosphination and the scope and limitations of
chemoselective hydrophosphination with primary phosphines and PH3. We also highlight the progress in the chemistry of the heavier
homologues. In general, we have tried to emphasize what is missing
from our hydrophosphination armament, with the aim of guiding future
research targets.
Collapse
Affiliation(s)
- Samantha Lau
- Department of Chemistry, University of Bath, Bath BA2 7AY, U.K
| | - Thomas M. Hood
- Department of Chemistry, University of Bath, Bath BA2 7AY, U.K
| | - Ruth L. Webster
- Department of Chemistry, University of Bath, Bath BA2 7AY, U.K
| |
Collapse
|
8
|
Horsley Downie TM, Mahon MF, Lowe JP, Bailey RM, Liptrot DJ. A Copper(I) Platform for One-Pot P–H Bond Formation and Hydrophosphination of Heterocumulenes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Bath BA2 7AY U.K
| | - John P. Lowe
- Department of Chemistry, University of Bath, Bath BA2 7AY U.K
| | - Rowan M. Bailey
- Department of Chemistry, University of Bath, Bath BA2 7AY U.K
| | | |
Collapse
|
9
|
Li YB, Tian H, Zhang S, Xiao JZ, Yin L. Copper(I)-Catalyzed Asymmetric Synthesis of P-Chiral Aminophosphinites. Angew Chem Int Ed Engl 2022; 61:e202117760. [PMID: 35076164 DOI: 10.1002/anie.202117760] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Indexed: 01/04/2023]
Abstract
Herein, a copper(I)-catalyzed reaction of diarylphosphines and O-benzoyl hydroxylamines is developed. In the cases of symmetrical diarylphosphines, a series of aminophosphinites is prepared in high yields. In the cases of unsymmetrical diarylphosphines, an array of P-chiral aminophosphinites is synthesized in high yields with high enantioselectivity by using a copper(I)-(R,RP )-Ph-FOXAP complex as a chiral catalyst. Based on several control experiments and 31 P NMR studies, a two-electron redox mechanism involving the dynamic kinetic asymmetric transformation of unsymmetrical diarylphosphines is proposed for the copper(I)-catalyzed asymmetric reaction. Finally, one representative P-chiral phosphoric amide generated through the oxidation with H2 O2 is transformed to a chiral diarylphosphinate in high yield with retained enantioselectivity, which allows further transformations towards various P-chiral tertiary phosphines.
Collapse
Affiliation(s)
- Yan-Bo Li
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Hu Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Shuai Zhang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Jun-Zhao Xiao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| |
Collapse
|
10
|
Schwamm RJ, Coles MP. Catalytic Hydrophosphination of Isocyanates by Molecular Antimony Phosphanides. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ryan J. Schwamm
- Victoria University of Wellington Faculty of Science School of Chemical and Physical Sciences NEW ZEALAND
| | - Martyn P Coles
- Victoria University of Wellington School of Chemical and Physical Sciences PO Box 600 6140 Wellington NEW ZEALAND
| |
Collapse
|
11
|
Cyclo-Tetrakis(μ-diphenylphosphido)-1,5-bis(tri-tert-butylphosphine)-Tetracopper. MOLBANK 2022. [DOI: 10.3390/m1334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Copper phosphido compound Cu4(μ-PPh2)4(PtBu3)2 was synthesized by three synthetic methods and structurally characterized by X-ray diffraction and 1H, 31P, 13C and 31P HMBC NMR spectroscopy. Cu4(μ-PPh2)4(PtBu3)2 was also demonstrated to be a hydrophosphination pre-catalyst.
Collapse
|
12
|
Li Y, Tian H, Zhang S, Xiao J, Yin L. Copper(I)‐Catalyzed Asymmetric Synthesis of
P
‐Chiral Aminophosphinites. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yan‐Bo Li
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Hu Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Shuai Zhang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Jun‐Zhao Xiao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| |
Collapse
|
13
|
Charman RSC, Mahon MF, Lowe JP, Liptrot DJ. The structures of ring-expanded NHC supported copper(I) triphenylstannyls and their phenyl transfer reactivity towards heterocumulenes. Dalton Trans 2022; 51:831-835. [PMID: 34994747 DOI: 10.1039/d1dt03109k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three ring-expanded N-heterocyclic carbene-supported copper(I) triphenylstannyls have been synthesised by the reaction of (RE-NHC)CuOtBu with triphenylstannane (RE-NHC = 6-Mes, 6-Dipp, 7-Dipp). The compounds were characterised by NMR spectroscopy and X-ray crystallography. Reaction of (6-Mes)CuSnPh3 with di-p-tolyl carbodiimide, phenyl isocyanate and phenylisothiocyanate gives access to a copper(I) benzamidinate, benzamide and benzothiamide respectively via phenyl transfer from the triphenylstannyl anion with concomitant formation of (Ph2Sn)n. Attempts to exploit this reactivity under a catalytic regime were hindered by rapid copper(I)-catalysed dismutation of Ph3SnH to Ph4Sn, various perphenylated tin oligomers, H2 and a metallic material thought to be Sn(0). Mechanistic insight was provided by reaction monitoring via NMR spectroscopy and mass spectrometry.
Collapse
Affiliation(s)
- Rex S C Charman
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY UK.
| | - Mary F Mahon
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY UK.
| | - John P Lowe
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY UK.
| | - David J Liptrot
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY UK.
| |
Collapse
|
14
|
Geer AM, Tejel C. Organo-phosphanide and -phosphinidene complexes of Groups 8–11. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2022. [DOI: 10.1016/bs.adomc.2022.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
15
|
Horsley Downie TM, Charman RSC, Hall JW, Mahon MF, Lowe JP, Liptrot DJ. A stable ring-expanded NHC-supported copper boryl and its reactivity towards heterocumulenes. Dalton Trans 2021; 50:16336-16342. [PMID: 34734620 DOI: 10.1039/d1dt03540a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Reaction of bis(pinacolato)diboron with (6-Dipp)CuOtBu generates a ring-expanded N-heterocyclic carbene supported copper(I) boryl, (6-Dipp)CuBpin. This compound showed remarkable stability and was characterised by NMR spectroscopy and X-ray crystallography. (6-Dipp)CuBpin readily dechalcogenated a range of heterocumulenes such as CO2, isocyanates and isothiocyanates to yield (6-Dipp)CuXBpin (X = O, S). In the case of CO2 catalytic reduction to CO is viable in the presence of excess bis(pinacolato)diboron. In contrast, in the case of iso(thio)cyanates, the isocyanide byproduct of dechalcogenation reacted with (6-Dipp)CuBpin to generate a copper(I) borylimidinate, (6-Dipp)CuC(NR)Bpin, which went on to react with heterocumulenes. This off-cycle reactivity gives selective access to a range of novel boron-containing heterocycles bonded to copper, but precludes catalytic reactivity.
Collapse
Affiliation(s)
| | - Rex S C Charman
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY, UK.
| | - Jonathan W Hall
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY, UK.
| | - Mary F Mahon
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY, UK.
| | - John P Lowe
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY, UK.
| | - David J Liptrot
- Department of Chemistry, University of Bath. Claverton Down, Bath, BA2 7AY, UK.
| |
Collapse
|
16
|
Zhang B, Ma X, Yan B, Ni C, Yu H, Yang Z, Roesky HW. An efficient catalytic method for hydrophosphination of heterocumulenes with diethylzinc as precatalyst without a solvent. Dalton Trans 2021; 50:15488-15492. [PMID: 34723295 DOI: 10.1039/d1dt02706a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Commercially available compound ZnEt2 acts as an efficient precatalyst for the solvent-free hydrophosphinations of heterocumulenes using Ph2PH as reagent. As far as we knew, this has been not reported in group 12 metal catalyzing reactions. A suggested mechanism of this reaction is explored, and the intermediate [{Ph2PC(NiPr)2}ZnEt]2 is obtained and characterized by a single-crystal X-ray structural analysis.
Collapse
Affiliation(s)
- Bingyi Zhang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
| | - Xiaoli Ma
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
| | - Ben Yan
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
| | - Congjian Ni
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
| | - Hailong Yu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
| | - Zhi Yang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
| | - Herbert W Roesky
- Institute of Inorganic Chemistry, Georg-August-Universität Göttingen, Göttingen Tammannstrasse 4, D-37077, Germany.
| |
Collapse
|
17
|
Zhu X, Xu M, Sun J, Guo D, Zhang Y, Zhou S, Wang S. Hydroamination and Hydrophosphination of Isocyanates/Isothiocyanates under Catalyst‐Free Conditions. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100932] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiancui Zhu
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
| | - Mengchen Xu
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
| | - Jinrong Sun
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
| | - Dianjun Guo
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
| | - Yiwei Zhang
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
| | - Shuangliu Zhou
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu Anhui 241002 China
- Anhui Laboratory of Clean Catalytic Engineering Anhui Laboratory of Functional Complexes for Materials Chemistry and Application College of Chemical and Environmental Engineering Anhui Polytechnic University Wuhu Anhui 241002 China
| |
Collapse
|
18
|
Zhang S, Xiao JZ, Li YB, Shi CY, Yin L. Copper(I)-Catalyzed Asymmetric Alkylation of Unsymmetrical Secondary Phosphines. J Am Chem Soc 2021; 143:9912-9921. [PMID: 34160199 DOI: 10.1021/jacs.1c04112] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A copper(I)-catalyzed asymmetric alkylation of HPAr1Ar2 with alkyl halides is uncovered, which provides an array of P-stereogenic phosphines in generally high yield and enantioselectivity. The electrophilic alkyl halides enjoy a broad substrate scope, including allyl bromides, propargyl bromide, benzyl bromides, and alkyl iodides. Moreover, 11 unsymmetrical diarylphosphines (HPAr1Ar2) serve as competent pronucleophiles. The present methodology is also successfully applied to catalytic asymmetric double and triple alkylation, and the corresponding products were obtained in moderate diastereo- and excellent enantioselectivities. Some 31P NMR experiments indicate that bulky HPPhMes exhibits weak competitively coordinating ability to the Cu(I)-bisphosphine complex, and thus the presence of stoichiometric HPAr1Ar2 does not affect the enantioselectivity significantly. Therefore, the high enantioselectivity in this reaction is attributed to the high performance of the unique Cu(I)-(R,RP)-TANIAPHOS complex in asymmetric induction. Finally, one monophosphine and two bisphosphines prepared by the present reaction are employed as efficient chiral ligands to afford three structurally diversified Cu(I) complexes, which demonstrates the synthetic utility of the present methodology.
Collapse
Affiliation(s)
- Shuai Zhang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jun-Zhao Xiao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yan-Bo Li
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Chang-Yun Shi
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Centre for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| |
Collapse
|
19
|
Strausser SL, Jenkins DM. Synthesis of d10 N-Heterocyclic Carbene Complexes with a Perimidine Scaffold. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shelby L. Strausser
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - David M. Jenkins
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
20
|
Huke CD, Kays DL. Hydrofunctionalization reactions of heterocumulenes: Formation of C–X (X = B, N, O, P, S and Si) bonds by homogeneous metal catalysts. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2021. [DOI: 10.1016/bs.adomc.2021.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|