Porphyrin, 5,15-diphenyl

N4C32H22, Porphyrin, 5,15-diphenyl-, 33 60 N4CI2O8RUC24H16, Ruthenium(ll), dichloro-bis(4,4 -dicarboxy-2,2 -bipyridine)-, cis-, 33 185... 

The synthesis of [3]- (figuratively shown as 7) and a [5]rotaxane (8) with one central and two terminal porphyrins in the open configuration has been reported <96AG(E)906> also a rotaxane with two Ru(terpy>2 stoppers has appeared <96CC1915>. A pseudorotaxane comprised of a macroring of 2,9-diphenyl-1,10-phenanthroline unit and a molecular string... 

Bacteriochlorins, 851 Barbituric acid metal complexes, 798 Barium alkoxides synthesis, 336 Barium complexes phthalocyanines, 863 porphyrins, 820 Becium homblei copper accumulation, 964 Benzaldehyde, 2-amino-self-condensation aza macrocycles from, 900 Benzamide, o-mercapto-metal complexes, 655 Benzamide oximes metal complexes, 274 Benzamidine, /V, V -diphenyl-metal complexes. 275 Benzene, 1,2-diamino-reactions with dicarbonyl compounds aza macrocycles from, 902 Benzene, 4 methylthionitroso-metal complexes, 804 Benzenedithiolates metal complexes, 605... 

Diederich et al. had postulated that the highly reactive iron-oxo species, arising from oxygen transfer from the oxidant to the Fem site [87], should be greatly stabilised by enclosure within a dendritic superstructure. The catalytic potential of the dendrimers 6 a-c was determined in the epoxidation of alkenes [83 a, 88] (1-octene and cyclooctene) and the oxidation of sulphides [83 a] ((methylsulphanyl)benzene and diphenyl sulphide) to sulphoxides - in dichloro-methane with iodosylbenzene as oxidising agent. Compared to the known metal-porphyrin catalysts, 6a-c exhibit only low TON (7 and 28, respectively, for... 

Ru(bipy)i Ru(II)-tris-2,2,bipyridiyne Ru(phen) Ru(II)-tris-l,10-phenanthroline Ru(dpp) Ru(II)-tris(4,7-diphenyl)-l,10-phenanthroline PtOEP platinum(II)-octaethylporphyrin PdOEP palladium(II)-octaethylporphyrin PdTPFFP palladium(II)-tetra(pentafluoro-phenyl)porphyrin L 2,4,7,9-tetraphenyl-l,10-phenanthroline py pyridine MP 3-methyl-pentane... 

Functionalization of 5,15-dibromo, 10,20-diphenyl-porphyrins and 2-bromotetraphenyl-porphyrins via metal-mediated cross-coupling methodology has led to a variety... 

A medium-polarity stationary phase based on fluor-alkyl-phenyl substitution, which is thermally stable up to 400°C, was reported [12], and a CHjO-terminated polydimethyl sUoxane, diphenyl-substituted stationary phase made possible the analysis of complex high-molecular-mass mixtures such as free-base porphyrins and triglycerides using narrow-bore capillary columns 2 [5]. Since these developments, a variety of stationary... 

A regular incorporation of the phenolic units into calix[4]arenes has been observed, if 2-or 6-hydroxymethyl derivatives of 3,4-disubstituted phenols (including cyclic compounds like S-naphthol) are condensed under these conditions (Scheme 5). The resulting calix[4]arenes 8 assume an inherently chiral, C4-symmetrical cone conformation which can be fixed by O-alkylation (see below). In an analogous manner a 2-hydroxymethyl phenol substituted at the 4-position with a porphyrin moiety has been converted to the corresponding calix[4]arene 9 in 60% yield by treatment with NaOH in refluxing diphenyl ether. ... 

The ms-tetraphenyl derivatives behave differently here the formation of a dication does not only lead to a reduction of the four-band neutral base spectrum, but also to a 50-nm bathochromic shift and a broadening of these bands, which are not found in any of the porphyrins with only partly substituted or nonsubstituted methine bridges. Even an ms-diphenyl porphyrin does not produce this effect [Treibs (77(5)]. The explanation is simple and straigthforward in the neutral form the phenyl rings lie almost perpendicular to the porphyrin plane, whereas in the highly distorted structure of the dication (arising from van der Waals and Coulomb repulsions) they rotate towards a more parallel position, which allows the overlap of n orbitals from the porphyrin and phenyl rings. This has also been shown by X-ray analysis of the dications [Fleischer ((55)]. Already the monocation is probably far from planarity, as is indicated by the immediate further protonation of this species. This extreme flexibility of the porphyrin plane has so far been demonstrated for TPP derivatives but not for ETIO-type porphyrins. 

The metal-free condensation of fr(2-formylphenyl)telluride with a series of diamines afforded the macrocyclic tellurium Schiff base macrocycles attempted complexation with Pt(II) and Hg(II) afforded transmetalated products <04JOM1452>. Reduction of the Schiff base components of these chalcogenaza macrocycles gave rise to more robust and flexible macrocycles, which form the desired Pd(II) Tie,iV,jV, Tie-complex <04CC322>. The related Se-derivatives are also therein reported. 5,10-Diphenyl-15,20-di(4-methoxyphenyl)-21-tellura-porphyrin was prepared (18%) by the acid-catalyzed condensation of 2,5-6w(l-phenyl-l-hydroxymethyl)tellurophene, pyrrole, and 4-methoxybenzaldehyde, followed by oxidation with /j-chloranil <04OM4513>. 

Similar triads C-P-QCOO of an electroneutral carotene C, a porphyrin P, and a carboxylated naphthoquinone QCOO dissolve in an asymmetrical manner in a vesicle membrane QCOO is on the outside of the membrane, P-C spans it. Water-insoluble 2,5-diphenyl-benzoquinone dissolved in the mem-... 

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