Zobrazeno 1 - 10
of 308
pro vyhledávání: '"K. Peter C. Vollhardt"'
Publikováno v:
Synlett. 33:34-37
The title compound was made by the reaction of the CpCo-complex of 2,3,7,8-tetrakis(trimethylsilyl) linear [3]phenylene, in which the metal coordinates one of the cyclobutadiene rings, with CpCo(C2H4)2. Because of its relative stability, a syn-dicoba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42f9ef52a81ec0f9718e698feef3324f
https://doi.org/10.1055/a-1659-7656
https://doi.org/10.1055/a-1659-7656
Publikováno v:
Synthesis. 53:4279-4289
The mechanisms by which the complexes CpCoL2 (Cp = C5H5; L = CO or CH2=CH2) mediate the cycloisomerizations of α,δ,ω-enynenes containing allylic ether linkages are probed by DFT methods. The outcomes corroborate experimental results and provide en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0655ad4ee116309024dc10016da70f54
https://doi.org/10.1055/a-1645-2632
https://doi.org/10.1055/a-1645-2632
Autor:
Daniel F. Harvey, K. Peter C. Vollhardt, Véronique Colovray-Gotteland, Barry M. Johnson, Christopher S. Ung
Publikováno v:
Synthesis. 53:699-712
1,7-Octadiyne underwent [2+2+2] cycloaddition to acetone in the presence of η5-cyclopentadienylcobalt(L)(L′) complexes to give (η5-cyclopentadienyl)[(1,4,4a,8a-η4)-5,6,7,8-tetrahydro-3,3-dimethyl-3H-2-benzopyran]cobalt, in which the two triple b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a5812c05228ef6f215e46c1b51204c4
https://doi.org/10.1055/s-0040-1707322
https://doi.org/10.1055/s-0040-1707322
Autor:
K. Peter C. Vollhardt, Uwe Dahlmann
Publikováno v:
Synthesis. 52:1287-1300
The title compounds, in which the terminal alkyne functions are adorned with -CH2OCH2CH2OCH2CH2OCH2CH3 or -p-C6H4OCH2CH2 OCH2CH2OCH3 substituents, were synthesized. The strategies for their preparation relied on prior art and involved the use of Sono
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1c31bfc6054f6bdb25329c1b6210193
https://doi.org/10.1055/s-0039-1690050
https://doi.org/10.1055/s-0039-1690050
Publikováno v:
Synthesis. 52:399-416
The complexes CpCoL2 (Cp = C5H5; L = CO or CH2=CH2) mediate the cycloisomerizations of α,δ,ω-enynenes containing allylic ether linkages to 3-(oxacyclopentyl or cycloalkyl)furans via the intermediacy of isolable CpCo-η 4-dienes. A suggested mechan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64b14b7f06954c5f8c1fe94a6a6dac4a
https://doi.org/10.1055/s-0039-1690727
https://doi.org/10.1055/s-0039-1690727
Autor:
Bernd Kayser, Judith Baumgartner, Michael J. West, Yong Kwang Park, Bolin Zhu, Theodore P. Klupinski, Robert G. Bergman, K. Peter C. Vollhardt
Publikováno v:
Synthesis. 51:2409-2429
The fulvalene diiridium platform was scrutinized for its potential to effect double vicinal C–H activation of C6H6 and C6H12, respectively. For this purpose, an improved preparation of Fv[Ir(CO)2]2 was developed, and the syntheses of the new comple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc7c89ce891ecf9ecf83044cd79aa325
https://doi.org/10.1055/s-0037-1611736
https://doi.org/10.1055/s-0037-1611736
Autor:
Ellen David, Cédric Ghellamallah, Kaspar A. Schärer, Robert Zitterbart, Michael J. Malaska, Daniel F. Harvey, Alix de la Houpliere, K. Peter C. Vollhardt, Dolores Pérez, Monika Knopp, David A. Barry, Tobias Aechtner, Brian A. Siesel
Publikováno v:
Synthesis. 50:1053-1089
Exploratory studies of the CpCo-mediated [2+2+2] cycloaddition of alkynes to the 2,3-double bond of benzo[b]furans (and some benzo[b]thiophenes) are presented, with the general aim to access morphinan substructures. The basic feasibility of construct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d75a8a63ed203658d7e02495f11f02c8
https://doi.org/10.1055/s-0036-1589147
https://doi.org/10.1055/s-0036-1589147
Autor:
Marek Kolmer, Diego Peña, Dolores Pérez, Marek Szymonski, Rafal Zuzak, Daniel Sánchez-Portal, Enrique Guitián, K. Peter C. Vollhardt, Szymon Godlewski, Jorge Caeiro, Hiroyo Kawai, Mads Engelund
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Understanding the mechanisms involved in the covalent attachment of organic molecules to surfaces is a major challenge for nanotechnology and surface science. On the basis of classical organic chemistry mechanistic considerations, key issues such as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b3e24196781a613943986abb97b6532
https://hdl.handle.net/10347/16994
https://hdl.handle.net/10347/16994
Publikováno v:
Synthesis. 47:3412-3422
An experimental foray into the potential of oxazoles and thiazoles to enter into CpCo-mediated [2+2+2] cycloadditions is described. α,ω-Diynes failed to engage the heterocycles productively, as illustrated by the behavior of the unique cobaltacyclo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::317c5bfead92497ea64668d7440f8bdb
https://doi.org/10.1055/s-0034-1378820
https://doi.org/10.1055/s-0034-1378820
Autor:
K. Peter C. Vollhardt, Son C. Nguyen, Gaston R. Schaller, Sabine D. Lotz, Sang Yeul Lee, Rachel H. Schmidt-Radde, Daniel Holmes
Publikováno v:
Synthesis. 47:2038-2054
Optimized procedures to [7]heliphene are described that allowed the synthesis of (η6-[7]heliphene)tricarbonylchromium and a preliminary exploration of its chemical behavior. DFT calculations provide structural and energetic information on this compl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d263eb082314cf79f75ebe06ea77669
https://doi.org/10.1055/s-0034-1380535
https://doi.org/10.1055/s-0034-1380535