Search results for "Nap"
showing 10 items of 2226 documents
CCDC 1428734: Experimental Crystal Structure Determination
2015
Related Article: Nora M. Kaluza, Dieter Schollmeyer, Udo Nubbemeyer|2016|Eur.J.Org.Chem.|2016|357|doi:10.1002/ejoc.201501341
CCDC 250963: Experimental Crystal Structure Determination
2005
Related Article: J.F.Schneider, M.Nieger, K.Nattinen, B.Lewall, E.Niecke, K.H.Dotz|2005|Eur.J.Org.Chem.|2005|1541|doi:10.1002/ejoc.200400800
CCDC 173987: Experimental Crystal Structure Determination
2003
Related Article: K.H.Dotz, N.Szesni, M.Nieger, K.Nattinen|2003|J.Organomet.Chem.|671|58|doi:10.1016/S0022-328X(03)00045-7
CCDC 261600: Experimental Crystal Structure Determination
2005
Related Article: F.Lauterwasser, M.Nieger, H.Mansikkamaki, K.Nattinen, S.Brase|2005|Chem.-Eur.J.|11|4509|doi:10.1002/chem.200500146
CCDC 941095: Experimental Crystal Structure Determination
2013
Related Article: Christoph Gütz, Rainer Hovorka, Caroline Stobe, Niklas Struch, Filip Topić, Gregor Schnakenburg, Kari Rissanen, Arne Lützen|2014|Eur.J.Org.Chem.|2014|206|doi:10.1002/ejoc.201301314
Due note etimologiche circostanziali circa il Ms.II.D.54 (BNN) attribuito a Baffi
2019
Within the investigations on the attribution of some manuscripts to the famous philologist P. Baffi and now kept at the National Library of Naples (BNN), this brief contribution investigates in detail some of the passages contained in Ms.II.D.54 (f. 234r et f. 325r), in order to understand its meaning and to evaluate and validate its attributing hypotheses.
Enantioselective synthesis of 4H-pyranonaphthoquinones via sequential squaramide and silver catalysis
2015
Chemical communications 52(8), 1669-1672(2016). doi:10.1039/C5CC09592A
Practical Syntheses of Terrylene Chromophores from Naphthalene and Perylene Building Blocks
2017
A facile and efficient method to synthesize terrylene imides, a unique class of chromophores, and their derivatives from commercially available naphthalene and perylene building blocks is reported. We developed an extremely efficient Suzuki/C-H-arylation coupling cascade with Pd2(dba)3/PCy3 (dba = dibenzylidenacetone, Cy = cyclohexyl) as the catalyst and highly soluble naphthalene derivatives as starting materials. This efficiency allows purification via precipitation and crystallization, avoiding time-consuming column chromatography. For the first time, the highly soluble 3,4,11,12-terrylene tetraester was prepared in gram scale with yields up to 75 % which thus becomes a versatile startin…
Synthesis of 1,3-bis(trimethylcyclam) and 1,3-bis(trimethylcyclen) substituted benzenes
2009
Pd-catalyzed amination of 1,3-dibromobenzene with N,N',N''-trimethylcyclam and N,N',N''-trimethylcyclen provided corresponding 1,3-bis(tetraazamacrocyclic) derivatives of benzene in 25-32% yields. The dependence of the products yields on the phosphine ligand applied (BINAP, DavePHOS) as well as on the stoichiometry of starting compounds was established. Scope and limitations for the synthesis of N-phenyl and N-(3-bromophenyl) derivatives of trimethylcyclam and trimethylcyclen were demonstrated.
6-Polyamino-substituted quinolines: synthesis and multiple metal (CuII, HgIIand ZnII) monitoring in aqueous media
2019
Chemoselective palladium-catalyzed arylation of polyamines with 6-bromoquinoline has been explored to prepare chelators for the detection of metal cations in aqueous media. The introduction of a single aromatic moiety into non-protected polyamine molecules was achieved using the commercially available Pd(dba)2/BINAP precatalyst to afford nitrogen chelators, in which the aromatic signalling unit is directly attached to the polyamine residue. Water-soluble receptors were then synthesized using N-alkylation of these polyamines by hydrophilic coordinating residues. By combining rich photophysical properties of the 6-aminoquinoline unit with a high coordination affinity of chelating polyamines a…