نتایج جستجو برای: buchwald
تعداد نتایج: 260 فیلتر نتایج به سال:
Fe-MIL-101-isatin-Schiff-base-Co was synthesized and applied as a catalyst for Ullmann-type, Buchwald–Hartwig, Hirao, Hiyama Mizoroki–Heck cross-coupling reactions of aryl halides.
Integrating accounts of speech production: the devil is in the representational details Brenda Rapp, Adam Buchwald & Matthew Goldrick a Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA b Department of Communicative Sciences and Disorders, New York University, New York, NY, USA c Department of Linguistics, Northwestern University, Evanston, IL, USA Published online: ...
Simultaneous flow dynamics in small and great thoracic vessels during physiological stress tests and normal breathing using real-time cardiac magnetic-resonance Jan M Sohns, Martin Fasshauer, Johannes T Kowallick, Andreas Schuster, Wieland Staab, Arun Joseph, Shoun Zhang, Dirk Voit, Sebastian Schaetz, Klaus-Dietmar Merboldt, Michael Steinmetz, Christina Unterberg-Buchwald, Jens Frahm, Joachim Lotz
[structure: see text] A new fluorophore, tri(9,9-diethyl-9H-fluorenyl)amine, was synthesized by the Buchwald-Hartwig reaction of 2-aminofluorene, and based on this molecule three more fluorophores were prepared that exhibit a very large intrinsic three-photon absorption in the near-IR region, which scales as a third power of the bridge length.
Continuing efforts to establish a more general "user-friendly" protocol for the palladium-catalysed arylation of amines (Buchwald-Hartwig reaction) are described herein. Significant advances have been made through the use of the versatile (SIPr)Pd(methallyl)Cl complex in conjunction with the reliable base lithium hexamethyldisilazide (LHMDS).
N,N',N''-trimethyltribenzo-1,4,7-triazacyclononatriene has been synthesized via sequential palladium-catalyzed Buchwald-Hartwig N-arylation reactions affording the 9-membered triaza o-cyclophane in 35% overall yield. An X-ray crystal structure shows the new cyclophane to have a C2-symmetric saddle conformation, as compared to the crown conformation exhibited by the related carbocyclic cyclotriv...
a powerful and convenient reaction procedure for the c-n coupling reaction (the buchwald-hartwig reaction), yielding products of n-arylanilines and n-arylamines in both conventional heating and microwave irradiation has been reported. the protocol utilizes a stable and new supper ferromagnetic nanoparticle chelating n-heterocyclic dicarbene palladium(ii) complex (pd-nhc) as catalyst which helps...
Abstract Eine Cyclopentanellierungsstrategie wird für den Zugang zu langen, stabilen Azaarenen vorgestellt. Buchwald–Hartwig‐Kupplung von literaturbekannten di‐ und tetrabromierten cyclopentanelierten N , ′‐Dihydrotetraazapentacenen lieferte stabile Azaarene mit bis 13 linear anellierten Benzolringen einer Länge 3.1 nm. Ihre optoelektronischen halbleitenden Eigenschaften sowie ihre Aromatizität...
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