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P-C dichotomy: divergent iron(-I)-mediated alkyne and phosphaalkyne cycloligomerisations.

Dalton transactions (Cambridge, England : 2003)

Wolf R, Ghavtadze N, Weber K, Schnöckelborg EM, de Bruin B, Ehlers AW, Lammertsma K.
PMID: 20104301
Dalton Trans. 2010 Feb 14;39(6):1453-6. doi: 10.1039/b923663p. Epub 2009 Dec 04.

In contrast to the recently reported cyclodimerisations of phosphaalkynes, alkynes preferably trimerise at the same low-valent iron(-I) centre.

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Wolf R, Ghavtadze N, Weber K, et al. P-C dichotomy: divergent iron(-I)-mediated alkyne and phosphaalkyne cycloligomerisations. Dalton Trans. 2009;39(6):1453-6doi: 10.1039/b923663p.
Wolf, R., Ghavtadze, N., Weber, K., Schnöckelborg, E. M., de Bruin, B., Ehlers, A. W., & Lammertsma, K. (2010). P-C dichotomy: divergent iron(-I)-mediated alkyne and phosphaalkyne cycloligomerisations. Dalton transactions (Cambridge, England : 2003), 39(6), 1453-6. https://doi.org/10.1039/b923663p
Wolf, Robert, et al. "P-C dichotomy: divergent iron(-I)-mediated alkyne and phosphaalkyne cycloligomerisations." Dalton transactions (Cambridge, England : 2003) vol. 39,6 (2010): 1453-6. doi: https://doi.org/10.1039/b923663p
Wolf R, Ghavtadze N, Weber K, Schnöckelborg EM, de Bruin B, Ehlers AW, Lammertsma K. P-C dichotomy: divergent iron(-I)-mediated alkyne and phosphaalkyne cycloligomerisations. Dalton Trans. 2010 Feb 14;39(6):1453-6. doi: 10.1039/b923663p. Epub 2009 Dec 04. PMID: 20104301.
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Acid-mediated electrocyclic domino transformations of 5,5-disubstituted 1-amino-1-azapenta-1,4-dien-3-ones into dihydrospiroindenepyrazole and dihydroindenodiazepine derivatives.

The Journal of organic chemistry

Ghavtadze N, Fröhlich R, Würthwein EU.
PMID: 19459598
J Org Chem. 2009 Jun 19;74(12):4584-91. doi: 10.1021/jo900270e.

Trifluoromethyl-substituted 1-amino-1-azapenta-1,4-dien-3-ones 4, which are accessible in good yield from pyruvates 1 in a three-step procedure, undergo a cascade reaction involving inter alia two electrocyclizations upon treatment with a large excess of trifluoromethanesulfonic acid to give novel dihydrospiroindenepyrazole 5a-o...

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Ghavtadze N, Fröhlich R, Würthwein EU. Acid-mediated electrocyclic domino transformations of 5,5-disubstituted 1-amino-1-azapenta-1,4-dien-3-ones into dihydrospiroindenepyrazole and dihydroindenodiazepine derivatives. J Org Chem. 2009;74(12):4584-91doi: 10.1021/jo900270e.
Ghavtadze, N., Fröhlich, R., & Würthwein, E. U. (2009). Acid-mediated electrocyclic domino transformations of 5,5-disubstituted 1-amino-1-azapenta-1,4-dien-3-ones into dihydrospiroindenepyrazole and dihydroindenodiazepine derivatives. The Journal of organic chemistry, 74(12), 4584-91. https://doi.org/10.1021/jo900270e
Ghavtadze, Nugzar, et al. "Acid-mediated electrocyclic domino transformations of 5,5-disubstituted 1-amino-1-azapenta-1,4-dien-3-ones into dihydrospiroindenepyrazole and dihydroindenodiazepine derivatives." The Journal of organic chemistry vol. 74,12 (2009): 4584-91. doi: https://doi.org/10.1021/jo900270e
Ghavtadze N, Fröhlich R, Würthwein EU. Acid-mediated electrocyclic domino transformations of 5,5-disubstituted 1-amino-1-azapenta-1,4-dien-3-ones into dihydrospiroindenepyrazole and dihydroindenodiazepine derivatives. J Org Chem. 2009 Jun 19;74(12):4584-91. doi: 10.1021/jo900270e. PMID: 19459598.
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The unique decomposition behavior of the dimeric dialkylaluminum hydrazide [(Me3C)2Al-N(H)-N(H)-Me]2-butane versus ammonia elimination.

Inorganic chemistry

Uhl W, Abel T, Hepp A, Nilges T, Rogel F, Würthwein EU, Ghavtadze N.
PMID: 19072532
Inorg Chem. 2009 Jan 19;48(2):752-9. doi: 10.1021/ic8016134.

The hydrazine adducts (Me3C)3E

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Uhl W, Abel T, Hepp A, et al. The unique decomposition behavior of the dimeric dialkylaluminum hydrazide [(Me3C)2Al-N(H)-N(H)-Me]2-butane versus ammonia elimination. Inorg Chem. 2009;48(2):752-9doi: 10.1021/ic8016134.
Uhl, W., Abel, T., Hepp, A., Nilges, T., Rogel, F., Würthwein, E. U., & Ghavtadze, N. (2009). The unique decomposition behavior of the dimeric dialkylaluminum hydrazide [(Me3C)2Al-N(H)-N(H)-Me]2-butane versus ammonia elimination. Inorganic chemistry, 48(2), 752-9. https://doi.org/10.1021/ic8016134
Uhl, Werner, et al. "The unique decomposition behavior of the dimeric dialkylaluminum hydrazide [(Me3C)2Al-N(H)-N(H)-Me]2-butane versus ammonia elimination." Inorganic chemistry vol. 48,2 (2009): 752-9. doi: https://doi.org/10.1021/ic8016134
Uhl W, Abel T, Hepp A, Nilges T, Rogel F, Würthwein EU, Ghavtadze N. The unique decomposition behavior of the dimeric dialkylaluminum hydrazide [(Me3C)2Al-N(H)-N(H)-Me]2-butane versus ammonia elimination. Inorg Chem. 2009 Jan 19;48(2):752-9. doi: 10.1021/ic8016134. PMID: 19072532.
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Experimental and theoretical characterization of the aromatization, epimerization, and fragmentation reactions of bi-2H-azirin-2-yls prepared from 1,4-diazidobuta-1,3-dienes.

Chemistry (Weinheim an der Bergstrasse, Germany)

Banert K, Köhler F, Melzer A, Scharf I, Rheinwald G, Rüffer T, Lang H, Herges R, Hess K, Ghavtadze N, Würthwein EU.
PMID: 21780205
Chemistry. 2011 Aug 29;17(36):10071-80. doi: 10.1002/chem.201101220. Epub 2011 Jul 21.

1,4-Diazidobuta-1,3-dienes (Z,Z)-10, 17, and 21 were photolyzed and thermolyzed to yield the pyridazines 13, 20, and 23, respectively. To explain these aromatic final products, the generation of highly strained bi-2H-azirin-2-yls 12, 19, and 22 and their valence isomerization were...

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Banert K, Köhler F, Melzer A, et al. Experimental and theoretical characterization of the aromatization, epimerization, and fragmentation reactions of bi-2H-azirin-2-yls prepared from 1,4-diazidobuta-1,3-dienes. Chemistry. 2011;17(36):10071-80doi: 10.1002/chem.201101220.
Banert, K., Köhler, F., Melzer, A., Scharf, I., Rheinwald, G., Rüffer, T., Lang, H., Herges, R., Hess, K., Ghavtadze, N., & Würthwein, E. U. (2011). Experimental and theoretical characterization of the aromatization, epimerization, and fragmentation reactions of bi-2H-azirin-2-yls prepared from 1,4-diazidobuta-1,3-dienes. Chemistry (Weinheim an der Bergstrasse, Germany), 17(36), 10071-80. https://doi.org/10.1002/chem.201101220
Banert, Klaus, et al. "Experimental and theoretical characterization of the aromatization, epimerization, and fragmentation reactions of bi-2H-azirin-2-yls prepared from 1,4-diazidobuta-1,3-dienes." Chemistry (Weinheim an der Bergstrasse, Germany) vol. 17,36 (2011): 10071-80. doi: https://doi.org/10.1002/chem.201101220
Banert K, Köhler F, Melzer A, Scharf I, Rheinwald G, Rüffer T, Lang H, Herges R, Hess K, Ghavtadze N, Würthwein EU. Experimental and theoretical characterization of the aromatization, epimerization, and fragmentation reactions of bi-2H-azirin-2-yls prepared from 1,4-diazidobuta-1,3-dienes. Chemistry. 2011 Aug 29;17(36):10071-80. doi: 10.1002/chem.201101220. Epub 2011 Jul 21. PMID: 21780205.
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3-(Hetero)aryl-4-indolylamino-α-tetralones by diastereoselective internal redox cyclization: an "azaenamine" conjugate addition.

The Journal of organic chemistry

Ghavtadze N, Narayan R, Wibbeling B, Würthwein EU.
PMID: 21657793
J Org Chem. 2011 Jul 01;76(13):5185-97. doi: 10.1021/jo200896y. Epub 2011 Jun 10.

(E)-3-(hetero)aryl-1-(2-((E)-(indolin-1-ylimino)methyl)phenyl)prop-2-en-1-ones 1 undergo 6-exo-trig cyclization reactions upon treatment with BF(3)·Me(2)S in dichloromethane at low temperature to give the tetralones 10 in good yield. This cyclization process can be considered to be an intramolecular Michael-type addition which is accompanied by...

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Ghavtadze N, Narayan R, Wibbeling B, et al. 3-(Hetero)aryl-4-indolylamino-α-tetralones by diastereoselective internal redox cyclization: an "azaenamine" conjugate addition. J Org Chem. 2011;76(13):5185-97doi: 10.1021/jo200896y.
Ghavtadze, N., Narayan, R., Wibbeling, B., & Würthwein, E. U. (2011). 3-(Hetero)aryl-4-indolylamino-α-tetralones by diastereoselective internal redox cyclization: an "azaenamine" conjugate addition. The Journal of organic chemistry, 76(13), 5185-97. https://doi.org/10.1021/jo200896y
Ghavtadze, Nugzar, et al. "3-(Hetero)aryl-4-indolylamino-α-tetralones by diastereoselective internal redox cyclization: an "azaenamine" conjugate addition." The Journal of organic chemistry vol. 76,13 (2011): 5185-97. doi: https://doi.org/10.1021/jo200896y
Ghavtadze N, Narayan R, Wibbeling B, Würthwein EU. 3-(Hetero)aryl-4-indolylamino-α-tetralones by diastereoselective internal redox cyclization: an "azaenamine" conjugate addition. J Org Chem. 2011 Jul 01;76(13):5185-97. doi: 10.1021/jo200896y. Epub 2011 Jun 10. PMID: 21657793.
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Synthesis of a GaN cage compound with a hydrazinetetraide fragment, [N-N]4-, stabilised by six gallium atoms.

Chemistry (Weinheim an der Bergstrasse, Germany)

Uhl W, Rezaeirad B, Layh M, Hagemeier E, Würthwein EU, Ghavtadze N, Kuzu I.
PMID: 20853295
Chemistry. 2010 Oct 25;16(40):12195-8. doi: 10.1002/chem.201001589.

Thermolysis of the bicyclic gallium hydrazide [(GaMe(2))(4)(NH-NMe)(NH-NHMe)(2)] (1) yielded the unique cage compound [(GaMe)(4)(GaMe(2))(4)(N(2))(NH-NMe)(4)] (2). Compound 2 contains a remarkable hydrazinetetraide moiety, [N-N](4-), as the central structural motif which is stabilised by coordination to six gallium atoms.

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Uhl W, Rezaeirad B, Layh M, et al. Synthesis of a GaN cage compound with a hydrazinetetraide fragment, [N-N]4-, stabilised by six gallium atoms. Chemistry. 2010;16(40):12195-8doi: 10.1002/chem.201001589.
Uhl, W., Rezaeirad, B., Layh, M., Hagemeier, E., Würthwein, E. U., Ghavtadze, N., & Kuzu, I. (2010). Synthesis of a GaN cage compound with a hydrazinetetraide fragment, [N-N]4-, stabilised by six gallium atoms. Chemistry (Weinheim an der Bergstrasse, Germany), 16(40), 12195-8. https://doi.org/10.1002/chem.201001589
Uhl, Werner, et al. "Synthesis of a GaN cage compound with a hydrazinetetraide fragment, [N-N]4-, stabilised by six gallium atoms." Chemistry (Weinheim an der Bergstrasse, Germany) vol. 16,40 (2010): 12195-8. doi: https://doi.org/10.1002/chem.201001589
Uhl W, Rezaeirad B, Layh M, Hagemeier E, Würthwein EU, Ghavtadze N, Kuzu I. Synthesis of a GaN cage compound with a hydrazinetetraide fragment, [N-N]4-, stabilised by six gallium atoms. Chemistry. 2010 Oct 25;16(40):12195-8. doi: 10.1002/chem.201001589. PMID: 20853295.
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Showing 1 to 6 of 6 entries