Zobrazeno 1 - 10 of 337 pro vyhledávání: '"John J. Eisch"'
1
Facile Rearrangement of the 6,11-Diphenyldibenzo[b,f][1,4]diazocine Skeleton into a Substituted 2-(2-Aminophenyl)-1,3-diphenylisoindole via Anomalous Carbo­lithiation or Hydrolithiation: Corroboration of Operative SET Processes
Autor: Wei Liu, Lisheng Zhu, Arnold L. Rheingold, John J. Eisch
Publikováno v: European Journal of Organic Chemistry. 2015:7384-7394
The starting 6,11-diphenyldibenzo[b,f][1,4]diazocine has been individually treated with R–Li reagents in THF, where R = AlH4, PhCH2, Ph2CH, Ph3C, CH3, CH3(CH2)3, C6H5 or Ph–C≡C, to learn whether an expected 1,2- or 1,4-addition would cleanly oc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ec88798cba7240abde408c92e8f70c9
https://doi.org/10.1002/ejoc.201500917
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2
Emergence of electrophilic alumination as the counterpart of established nucleophilic lithiation: an academic sojourn in organometallics with William Kaska as fellow traveler
Autor: John J. Eisch
Publikováno v: Dalton Transactions. 44:6671-6679
William Kaska pursued doctoral studies with John Eisch in mechanistic organometallic chemistry, first with organolithium reactions at St. Louis University and then at the University of Michigan with organoaluminum reactions. Thereby he revealed the c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be719d3d9ae8559fe072caa3177fd560
https://doi.org/10.1039/c4dt01036a
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4
Facile Redox Interconversion of 6,11-Diphenyldibenzo[b,f][1,4]diazocine and 2-(2-Aminophenyl)-1,3-diphenylisoindole: Reversible SET Ring Contraction and Expansion Processes
Autor: Wei Liu, Lisheng Zhu, John J. Eisch, Arnold L. Rheingold
Publikováno v: European Journal of Organic Chemistry. 2014:7489-7498
In our continuing attempts to convert tub-shaped dibenzo[1,4]diazocines or dibenzo[1,5]diazocines into necessarily planar Huckel aromatic ten-π-electron dianions or dihydro derivatives of the central diazocine ring, we have added requisite electrons
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6302ee757c35e929a598c5c87515f0c
https://doi.org/10.1002/ejoc.201403101
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5
Steric Factors in the Single-Electron Transfer Carbolithiation and Transannular Reduction of 6,12-Diphenyldibenzo[b,f]­[1,5]­diazocine by Organolithium Reagents
Autor: John J. Eisch, Arnold L. Rheingold, Kun Yu
Publikováno v: European Journal of Organic Chemistry. 2014:818-832
The puckered tricyclic heterocycle 6,12-diphenyldibenzo[b,f][1,5]diazocine, a novel probe for revealing single-electron transfer (SET) reactions, is here employed as a model substrate for investigating the carbolithiation of imines and the stereochem
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e94605a9907b959ca10518d7357868da
https://doi.org/10.1002/ejoc.201301181
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7
6,12-Diphenyldibenzo[b,f][1,5]diazocine as an Electron-Capture Agent: Efficient Mechanistic Probe for SET Processes and Reagent for the Oxidative Dimerization of Benzylic Organometallics
Autor: Kun Yu, John J. Eisch, Arnold L. Rheingold
Publikováno v: European Journal of Organic Chemistry. 2012:3165-3171
In the present study, 6,12-diphenyldibenzo[b,f][1,5]diazocine, which X-ray diffraction measurements have now shown to possess a tub-shaped, eight-membered central ring, has been treated with sodium or lithium metal at 25 °C in THF, in an attempt to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::736a39576959ca563c1e414697f62268
https://doi.org/10.1002/ejoc.201200278
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8
Versatile Zirconium Reductants and Carbon-Carbon Coupling Agents Selectively Accessible from the 2:1 Molar Aggregate of n-Butyllithium and Zirconium(IV) Salts
Autor: John J. Eisch, John N. Gitua, Kun Yu
Publikováno v: European Journal of Organic Chemistry. 2011:3523-3530
In previous studies of transition metal alkyls the 2:1 molar aggregate of n-butyllithium and zirconium(IV) salts has been found to react both with benzylic hydrocarbons and aromatic carbonyl derivatives in diverse and useful ways. In the present stud
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b694fe9595a00bd4df1fb8d054fdc503
https://doi.org/10.1002/ejoc.201100307
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9
Chemical detection of carbon-metal bonds: From distinct sigma-bonding of main-group metals to ambiguous pi-bonding with transition metals
Autor: John J. Eisch
Publikováno v: Inorganica Chimica Acta. 364:3-9
The detection, site of binding and quantification of bonds between carbon and a main-group metal can be readily achieved by a combination of proto- and deuteriodemetallation of such stable organometallics, combined with NMR spectral and mass spectrom
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f69e88e626801b192cdd903428a45105
https://doi.org/10.1016/j.ica.2010.06.038
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10
Novel Alkylidenating Agents of Iron(III) Derivatives by Base-Mediated α,μ-Dehydrohalogenation and Their Chemical Trapping by Cycloaddition
Autor: Edon J. Rabinowitz, John J. Eisch, Jane U. Sohn
Publikováno v: European Journal of Organic Chemistry. 2010:2971-2977
Studies of the reactions between group 4 metal chlorides (M = Ti, Zr, Hf) and methyllithium at –78 °C in toluene can lead to methylidene–metal complexes, H2C=MCl2, by a sequence of monomethylation, α-carbon lithiation and α,μ-elimination of L
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fbdd0b0c2260bd1989545f82b5b140c
https://doi.org/10.1002/ejoc.201000281
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