“…All these bromo derivatives 3a-3d were subjected to cross-coupling reactions with bis(pinacolato)-diboron [22] in the presence of Pd(dppf)Cl 2 and KOAc in dioxane at 80°C to give the series of pinacol boronates 4a-4d in good yields of 60-91 % (Scheme 2, Table 2). Compounds 4a and 4b were new, while known compounds 4c [23] and 4d [21a] were prepared by this method in much higher yields (91 and 81 %, respectively) than alternative methods reported in the literature (30 and 42 %, respectively).…”
Section: Synthesis Of Ligand Building Blocksmentioning
A series of ethynyl-or (4-boronophenyl)bipyridines and -phenanthrolines were prepared as versatile building blocks for attachment of bidentate N-ligands to other molecules via cross-coupling reactions. Their complexation with Ru(bpy) 2 -Cl 2 gave the corresponding Ru II complexes. 9-Benzyladenine derivatives bearing the bipyridine or phenanthroline complexes in position 8, attached via a conjugate acetylene or phenylene linker were prepared by cross-coupling reactions of the ethynyl-or 4-boronophenylbipyridines and -phenanthrolines with 9-benzyl-8-bromoadenine. Their complexation with Ru(bpy) 2 Cl 2 afforded the corresponding Ru complexes as model compounds for electrochemical DNA labeling. The same compounds were also prepared directly by crosscoupling of 9-benzyl-8-bromoadenine with Ru complexes of the alkynes and boronic acids. Both approaches are compared in terms of potential applications for labeling of nucleic
“…All these bromo derivatives 3a-3d were subjected to cross-coupling reactions with bis(pinacolato)-diboron [22] in the presence of Pd(dppf)Cl 2 and KOAc in dioxane at 80°C to give the series of pinacol boronates 4a-4d in good yields of 60-91 % (Scheme 2, Table 2). Compounds 4a and 4b were new, while known compounds 4c [23] and 4d [21a] were prepared by this method in much higher yields (91 and 81 %, respectively) than alternative methods reported in the literature (30 and 42 %, respectively).…”
Section: Synthesis Of Ligand Building Blocksmentioning
A series of ethynyl-or (4-boronophenyl)bipyridines and -phenanthrolines were prepared as versatile building blocks for attachment of bidentate N-ligands to other molecules via cross-coupling reactions. Their complexation with Ru(bpy) 2 -Cl 2 gave the corresponding Ru II complexes. 9-Benzyladenine derivatives bearing the bipyridine or phenanthroline complexes in position 8, attached via a conjugate acetylene or phenylene linker were prepared by cross-coupling reactions of the ethynyl-or 4-boronophenylbipyridines and -phenanthrolines with 9-benzyl-8-bromoadenine. Their complexation with Ru(bpy) 2 Cl 2 afforded the corresponding Ru complexes as model compounds for electrochemical DNA labeling. The same compounds were also prepared directly by crosscoupling of 9-benzyl-8-bromoadenine with Ru complexes of the alkynes and boronic acids. Both approaches are compared in terms of potential applications for labeling of nucleic
“…Sibley et al [38] have also estimated the formation constants for the complexes of C 60 with aniline and the derivatives using BH equation. The most interesting feature of the present investigation is that 1 binds C 70 in preference to C 60 [39]. 2.285 Â 10 5 dm 3 mol À1 and 9.72 Â 10 4 dm 3 mol À1 for C 70 and C 60 , respectively, gives the K C70/C60 selectivity of $2.3 in CHCl 3 .…”
“…At approximately the same time, the groups of Raston and Shinkai, working independently, reported the selective purification of C 60 from fullerene soot by its selective association with p-tert-butylcalix [8]arene [21,22]. Drawing from these seminal investigations, several receptors based on calixarenes-mainly calix [5]arenes-have been described [23][24][25][26][27][28][29][30][31][32][33][34].…”
Section: Historical Notes On the Noncovalent Chemistry Of Fullerenesmentioning
The search for cleaner and more abundant sources of energy is one of the major scientific challenges of the 21 st century. Owing to its privileged position as the central science, chemistry is bound to play a leading role in this quest. Within the search for new materials for organic photovoltaics, some of the work we have carried out concerning the supramolecular chemistry of electron donor and acceptor molecules is presented.
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