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Lauk S, Zimmer M, Morgenstern B, Huch V, Müller C, Sitzmann H, Schäfer A. Tetra- and Pentaisopropylcyclopentadienyl Complexes of Group 15 Elements. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00008] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sergej Lauk
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, Campus Saarbrücken, 66123 Saarbrücken, Federal Republic of Germany
- University of Kaiserslautern, Department of Chemistry, Erwin-Schrödinger-Str. 54, 67663 Kaiserslautern, Federal Republic of Germany
| | - Michael Zimmer
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, Campus Saarbrücken, 66123 Saarbrücken, Federal Republic of Germany
| | - Bernd Morgenstern
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, Campus Saarbrücken, 66123 Saarbrücken, Federal Republic of Germany
| | - Volker Huch
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, Campus Saarbrücken, 66123 Saarbrücken, Federal Republic of Germany
| | - Carsten Müller
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, Campus Saarbrücken, 66123 Saarbrücken, Federal Republic of Germany
| | - Helmut Sitzmann
- University of Kaiserslautern, Department of Chemistry, Erwin-Schrödinger-Str. 54, 67663 Kaiserslautern, Federal Republic of Germany
| | - André Schäfer
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, Campus Saarbrücken, 66123 Saarbrücken, Federal Republic of Germany
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Goswami M, Ashley DC, Baik MH, Pohl NLB. Mechanistic Studies of Bismuth(V)-Mediated Thioglycoside Activation Reveal Differential Reactivity of Anomers. J Org Chem 2016; 81:5949-62. [PMID: 27295299 DOI: 10.1021/acs.joc.6b00860] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The mechanism of bismuth(V)-mediated thioglycoside activation was examined using reaction kinetics and quantum chemical reaction models. NMR experiments show an unusual nonlinear growth/decay curve for the glycosylation reaction. Further studies suggest an anomeric inversion of the β-glycoside donor to the α-donor during its activation, even in the presence of a neighboring 2-position acetate. Interestingly, in situ anomerization was not observed in the activation of an α-glycoside donor, and this anomer also showed faster reaction times and higher product diastereoselectivites. Density functional theory calculations identify the structure of the promoter triphenyl bismuth ditriflate, [Ph3Bi(OTf)2, 1], in solution and map out the energetics of its interactions with the two thioglycoside anomers. These calculations suggest that 1 must bind the thiopropyl arm to induce triflate loss. The computational analyses also show that, unlike most O-glycosides, the β- and α-donor S-glycosides are similar in energy. One energetically reasonable anomerization pathway of the donors is an SN1-like mechanism promoted by forming a bismuth-sulfonium adduct with the Lewis acidic Bi(V) for the formation of an oxacarbenium intermediate. Finally, the computed energy compensations needed to form these α vs β Bi adducts is a possible explanation for the differential reactivity of these donors.
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Affiliation(s)
- Manibarsha Goswami
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
| | - Daniel C Ashley
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Mu-Hyun Baik
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) , Daejeon 305-701, Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Korea
| | - Nicola L B Pohl
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.,Department of Chemical and Biological Engineering, Iowa State University , Ames, Iowa 50011, United States
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Petrov A, Golovnev N, Trubina S, Erenburg S, Dergachev I. A spectroscopic and ab initio study on Bi(III) complex formation with 3-mercaptopropanesulfonic acid. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.863283] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- A.I. Petrov
- Institute of Non-Ferrous Metals and Materials Science, Siberian Federal University, Krasnoyarsk, Russian Federation
| | - N.N. Golovnev
- Institute of Non-Ferrous Metals and Materials Science, Siberian Federal University, Krasnoyarsk, Russian Federation
| | - S.V. Trubina
- Siberian Branch, Nikolaev Institute of Inorganic Chemistry, Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - S.B. Erenburg
- Siberian Branch, Nikolaev Institute of Inorganic Chemistry, Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - I.D. Dergachev
- Institute of Non-Ferrous Metals and Materials Science, Siberian Federal University, Krasnoyarsk, Russian Federation
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Complex formation of bismuth(III) with 2-mercaptoethanesulfonic and 3-mercaptopropanesulfonic acids: Experimental and theoretical study. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.059] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shang J, Zhang J, Zhang T, Huang H, Zhang S, Shu Y. Theoretical Study of Energetic Complexes (III): Bis‐(5‐nitro‐2
H
‐tetrazolato‐
N
2
)tetraammine Cobalt(III) Perchlorate (BNCP) and Its Transition Metal (Ni/Fe/Cu/Zn) Perchlorate Analogues. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201280027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jing Shang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Jianguo Zhang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Tonglai Zhang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Huisheng Huang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Shaowen Zhang
- School of Science, Beijing Institute of Technology, Beijing 100081, China
| | - Yuanjie Shu
- Institute of Chemical Materials, Chinese Academy of Engineering Physics, Mianyang, Sichuan 621900, China
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Monakhov KY, Zessin T, Linti G. Molecular Assemblies Based on Cp*BiX2Units (X = Cl, Br, I): An Experimental and Computational Study. Organometallics 2011. [DOI: 10.1021/om200169d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kirill Yu. Monakhov
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Thomas Zessin
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Gerald Linti
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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Stereochemical activity of lone pairs of electrons and supramolecular aggregation patterns based on secondary interactions involving tellurium in its 1,1-dithiolate structures. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.09.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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