Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Niloufar Hadei"'
Publikováno v:
European Journal of Organic Chemistry. 2010:4343-4354
An overview of Pd-PEPPSI complexes in the Negishi cross-coupling reaction is presented. Preliminary evaluations of differentially substituted imidazolium salts that generate highly active cross-coupling catalysts in situ provide the foundation for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f5626a544aaa0cbd1ea7269db43015c
https://doi.org/10.1002/ejoc.201000359
https://doi.org/10.1002/ejoc.201000359
Autor:
Eric Assen B. Kantchev, Alan C. Hopkinson, De Cai Fang, Imre G. Csizmadia, Gregory A. Chass, Niloufar Hadei, Christopher J. O'Brien, Michael G. Organ, Wei Hua Mu
Publikováno v:
Chemistry - A European Journal. 15:4281-4288
A novel mechanism is proposed for the Pd-1,3-(2,6-diisopropylphenyl)imidazolyl-2-ylidene (1) catalyzed Negishi reaction. DFT computations supported by atoms-in-molecules (AIM) analyses of non-truncated models show that a "steric wall" created by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2a0f737f8a1e2c73164ad5bc6294aab
https://doi.org/10.1002/chem.200900042
https://doi.org/10.1002/chem.200900042
Autor:
Christopher J. O'Brien, Eric Assen B. Kantchev, Mirvat Abdel‐Hadi, Igor Dubovyk, Michael G. Organ, Cory Valente, Niloufar Hadei, Mahmoud Sayah, Stephanie Avola
Publikováno v:
Chemistry - A European Journal. 14:2443-2452
Pd-N-heterocyclic carbene (NHC)-catalyzed Buchwald-Hartwig amination protocols mediated by Pd-PEPPSI precatalysts is described. These protocols provide access to a range of hindered and functionalized drug-like aryl amines in high yield with both ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef7652085e99df4c5ece7782cf75a251
https://doi.org/10.1002/chem.200701621
https://doi.org/10.1002/chem.200701621
Autor:
Alan C. Hopkinson, Ting-Hua Tang, Niloufar Hadei, Eric Assen B. Kantchev, Christopher J. O'Brien, De-Cai Fang, Michael G. Organ, Gregory A. Chass, David H. Setiadi
Publikováno v:
Tetrahedron. 61:9723-9735
A combined experimental and computational approach towards the development of Pd–NHC catalysts is described. A range of benzimidazolylidinium ligands incorporating electron-rich and electron-poor substituents were prepared and evaluated in the Suzu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e167e0557fb8afd0be5a2c41c2a78c2
https://doi.org/10.1016/j.tet.2005.07.101
https://doi.org/10.1016/j.tet.2005.07.101
Publikováno v:
Organic Letters. 7:1991-1994
Suzuki reactions of aryl chlorides and arylboronic acids with a range of electronically different N-heterocyclic carbene ligands derived from N,N-diadamantylbenzimidazolium salts are reported. Results indicate that an electron-rich NHC ligand enhance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2b9707a88977bea2e4c93f8e9ab1d46
https://doi.org/10.1021/ol050471w
https://doi.org/10.1021/ol050471w
Publikováno v:
Organic Letters. 7:3805-3807
The development of an NHC-based system capable of cross-coupling sp(3)-sp(3) centers in high yield has been a long-standing challenge. This communication describes the use of a Pd-NHC catalytic system that achieves room-temperature Negishi cross-coup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ea6582c3a33b30ac216e2aa5a94ff4e
https://doi.org/10.1021/ol0514909
https://doi.org/10.1021/ol0514909
Publikováno v:
ChemInform. 44
Among various catalysts tested, PES is found to be the most efficient one to couple allylzinc bromides and aryl halides with high selectivity for the branched product (III) in favor of the linear one.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58bcc2b159b3c911232a1a79e9925296
https://doi.org/10.1002/chin.201312035
https://doi.org/10.1002/chin.201312035
Publikováno v:
Angewandte Chemie (International ed. in English). 51(45)
No migration? No problem! A series of new N-heterocyclic carbene based Pd complexes has been created and evaluated in the Negishi cross-coupling of aryl and heteroaryl chlorides, bromides, and triflates with a variety of secondary alkylzinc reagents.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fe69fd6c6a736d53eedf2c8c41e7316
https://pubmed.ncbi.nlm.nih.gov/23038603
https://pubmed.ncbi.nlm.nih.gov/23038603
Autor:
Pascal Patschinski, Niloufar Hadei, George T. Achonduh, Michael G. Organ, Diethard K. Bohme, Stephanie Avola, Howard N. Hunter, Voislav Blagojevic
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 17(28)
Negishi cross-coupling reactions were analyzed in solution by mass spectrometry and NMR spectroscopy to identify both the effect of LiBr as an additive as well as the purpose of 3-dimethyl-2-imidazolidinone (DMI) as a co-solvent. The results suggest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f89091a0015b18e49ee836fb418b5d62
https://pubmed.ncbi.nlm.nih.gov/21656863
https://pubmed.ncbi.nlm.nih.gov/21656863
Publikováno v:
Angewandte Chemie (International ed. in English). 50(17)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::287b598ced3cac004ea7ebdae2ba2b49
https://pubmed.ncbi.nlm.nih.gov/21442712
https://pubmed.ncbi.nlm.nih.gov/21442712