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Donnecke S, Paul M, Williams PJH, Chan S, Tse V, Sachdeva J, Oliver AG, McIndoe JS, Paci I. Mechanistic study of the atomic layer deposition of cobalt: a combined mass spectrometric and computational approach. Phys Chem Chem Phys 2024; 26:14448-14455. [PMID: 38713487 DOI: 10.1039/d4cp00093e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Cobaltcarbonyl-tert-butylacetylene (CCTBA) is a conventional precursor for the selective atomic layer deposition of Co onto silicon surfaces. However, a limited understanding of the deposition mechanism of such cobalt precursors curbs rational improvements on their design for increased efficiency and tuneable selectivity. The impact of using a less reactive internal alkyne instead of a terminal alkyne was investigated using experimental and computational methods. Using electrospray-ionization mass spectrometry, the formation of CCTBA analogs and their gas phase decomposition pathways were studied. Decomposition experiments show very similar decomposition pathways between the two complexes. The internal alkyne dissociates from the Co complex at slightly lower energies than the terminal alkyne, suggesting that an internal alkynyl ligand may be more suited to low temperature ALD. In addition, transition state calculations using the nudged elastic band method confirm an increased reaction barrier between the internal alkyne and the Si-H surface bonds on Si(111). These results suggests that using a less reactive internal alkyne will result in fewer embedded carbon impurities during deposition onto Si wafers. DFT calculations using the PBE functional and periodic boundary conditions also predict increased surface binding with the metal centers of the internal alkynyl complex.
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Affiliation(s)
- Sofia Donnecke
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Mathias Paul
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Peter J H Williams
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Serena Chan
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Veronica Tse
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Jigyasa Sachdeva
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Allen G Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - J Scott McIndoe
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
| | - Irina Paci
- Department of Chemistry, University of Victoria, Victoria, V8P 5C2, Canada.
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2
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Mathur P, Misra S. Metal-carbonyl promoted multicomponent coupling of alkynes for the synthesis of heterocyclic compounds. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Hancock EN, Wiest JM, Brown MK. Recent advances in the synthesis of gem-dimethylcyclobutane natural products. Nat Prod Rep 2019; 36:1383-1393. [PMID: 30855044 PMCID: PMC6739199 DOI: 10.1039/c8np00083b] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: January 2000 to July 2018 gem-Dimethylcyclobutanes are a common motif found in a multitude of natural products, and thus these structures have captivated synthetic chemists for years. However, until the turn of the century, most synthetic efforts relied upon the use of widely available terpenes, such as pinene or caryophyllene, that already contain the gem-dimethylcyclobutane motif. This approach limits the scope of molecules that can be accessed readily. This review highlights recent syntheses in which the gem-dimethylcyclobutane is assembled via de novo approaches. An outlook on the future of this research area is also provided.
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Affiliation(s)
- Erin N. Hancock
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave. Bloomington, IN 47405, USA.
| | - Johannes M. Wiest
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave. Bloomington, IN 47405, USA.
| | - M. Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave. Bloomington, IN 47405, USA.
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4
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Ning S, Liu Z, Wang Z, Liao M, Xie Z. Biomimetic Synthesis of Psiguajdianone Guided Discovery of the Meroterpenoids from Psidium guajava. Org Lett 2019; 21:8700-8704. [PMID: 31609125 DOI: 10.1021/acs.orglett.9b03299] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Psiguajdianone (1), a novel caryophyllene-derived meroterpenoid dimer, was isolated from Psidium guajava. The structure of 1 was determined by X-ray analysis and confirmed by total synthesis. Our synthetic strategy involves biomimetic cascade Knoevenagel condensation/hetero-Diels-Alder reaction and dimerization. Notably, the caryophyllene-derived meroterpenoids obtained during our synthesis were first identified as artifacts in the laboratory, and five of them were proven to be natural products present in the plant. Moreover, these compounds show significant anti-inflammatory activity.
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Affiliation(s)
- Shuai Ning
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , 730000 , China
| | - Zhenling Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , 730000 , China
| | - Zhichao Wang
- College of Chemical Engineering , Northwest Minzu University , Lanzhou , 730030 , China
| | - Minjian Liao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , 730000 , China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , 730000 , China
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5
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Cormier M, Fouquet E, Hermange P. Expedient synthesis of a symmetric cycloheptyne-Co2(CO)6 complex for orthogonal Huisgen cycloadditions. Org Chem Front 2019. [DOI: 10.1039/c9qo00086k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A cycloheptyne dicobalt-carbonyl complex with a terminal alkyne was synthesized by a short procedure, and was able to react selectively in Strain Promoted Alkyne Azide Cycloaddition (SPAAC) or Copper Catalysed Alkyne Azide Cycloaddition (CuAAC) depending on the conditions.
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Affiliation(s)
- Morgan Cormier
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- 33405 Talence Cedex
- France
| | - Eric Fouquet
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- 33405 Talence Cedex
- France
| | - Philippe Hermange
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- 33405 Talence Cedex
- France
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6
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Chapman LM, Beck JC, Lacker CR, Wu L, Reisman SE. Evolution of a Strategy for the Enantioselective Total Synthesis of (+)-Psiguadial B. J Org Chem 2018; 83:6066-6085. [PMID: 29728045 PMCID: PMC5990278 DOI: 10.1021/acs.joc.8b00728] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
(+)-Psiguadial B is a diformyl phloroglucinol meroterpenoid that exhibits antiproliferative activity against the HepG2 human hepatoma cancer cell line. This full account details the evolution of a strategy that culminated in the first enantioselective total synthesis of (+)-psiguadial B. A key feature of the synthesis is the construction of the trans-cyclobutane motif by a Wolff rearrangement with in situ catalytic, asymmetric trapping of the ketene. An investigation of the substrate scope of this method to prepare enantioenriched 8-aminoquinolinamides is disclosed. Three routes toward (+)-psiguadial B were evaluated that featured the following key steps: (1) an ortho-quinone methide hetero-Diels-Alder cycloaddition to prepare the chroman framework, (2) a Prins cyclization to form the bridging bicyclo[4.3.1]decane system, and (3) a modified Norrish-Yang cyclization to generate the chroman. Ultimately, the successful strategy employed a ring-closing metathesis to form the seven-membered ring and an intramolecular O-arylation reaction to complete the polycyclic framework of the natural product.
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Affiliation(s)
- Lauren M. Chapman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | | | | | - Linglin Wu
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Sarah E. Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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7
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Lyapunova AG, Danilkina NA, Rumyantsev AM, Khlebnikov AF, Chislov MV, Starova GL, Sambuk EV, Govdi AI, Bräse S, Balova IA. Relative Reactivity of Benzothiophene-Fused Enediynes in the Bergman Cyclization. J Org Chem 2018; 83:2788-2801. [DOI: 10.1021/acs.joc.7b03258] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anna G. Lyapunova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Natalia A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Andrey M. Rumyantsev
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Mikhail V. Chislov
- Research
Centre for Thermogravimetric and Calorimetric Research, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Galina L. Starova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Elena V. Sambuk
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I. Govdi
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute
of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute
of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A. Balova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
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8
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Li Z, Lam SM, Ip I, Wong WT, Chiu P. Rearrangements of α-Diazo-β-hydroxyketones for the Synthesis of Bicyclo[m.n.1]alkanones. Org Lett 2017; 19:4464-4467. [DOI: 10.1021/acs.orglett.7b01963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengning Li
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Shuk Mei Lam
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Ignatius Ip
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Wing-tak Wong
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Pauline Chiu
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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