Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Bidens

Ti in [Ti(> 2-Cl04)4] and Ni" in [Ni(>j -C104)L2] where L is a chiral bidenlate organic ligand.Sometimes both and modes occur in the same compound. The biden-latc bridging mode occurs in the silver complex [Ag /x,>j -00(0)20- (m-xylene)2]- The structure of appropriate segments of some of these compounds arc in Fig. 17.23. The distinction between coordinated and non-coordinaied ( ionic ) perchlorate is sometimes hard to make and there is an almost continuous... [Pg.869]

From Bidens species 5-metbyl 5 -butadienyl-2 -bithienyl (245) has been isolated, the constitution of which was eonfirmed synthetically. Another 2,2 -bithienyl derivative has been isolated as an additional nematodicidal principal of the roots of Tagetes, for which strueture (246) has been suggested. On the other hand Sorensen et aL have isolated from the thistles, Berkheya macrocepkala and Echinops spareocephalm, a compound with very similar UV and IR spectra as (246) for which they suggested structure (247), based on... [Pg.118]

Influence the Reactivity of Solids, with Special Emphasis on the Control of the Chemical FYocesses in Relation to Practical Applications by V.V. Boldyrev, M. Bidens and B. Ddmon... [Pg.887]

The results of studies of secondary metabolites of Hawaiian endemics are primarily useful in assessing levels of variation within taxa, but some generalizations relating to relationships with likely ancestors can be made. We start our survey with a genus well known to North Americans, Bidens, commonly called beggars ticks. [Pg.251]

Fig. 6.3 Compounds 525-535, a thiophene derivative and flavonoids from Hawaiian Bidens... Fig. 6.3 Compounds 525-535, a thiophene derivative and flavonoids from Hawaiian Bidens...
Berbee, M. and Pirseyedi, M. 2000. ITS Base sequence phylogeny in Bidens (Astera-... [Pg.312]

Bohm, B. A. and S. P. McCormick. 1990. Flavonoid variation in Hawaiian Bidens. Syst. [Pg.312]

Scheme 5-12 Platinum-catalyzed hydrophosphination of ethyl acrylate as a route to biden-tate diphosphines (Eq. 1). Stoichiometric reac-... Scheme 5-12 Platinum-catalyzed hydrophosphination of ethyl acrylate as a route to biden-tate diphosphines (Eq. 1). Stoichiometric reac-...
The structures of both [Tp]AuMe2 and [pzTp]AuMe2 have been determined by x-ray diffraction. In each case the [TpRR] ligands are biden-... [Pg.322]

Switching the roles of the zinc porphyrin template and N-donor adapter provides an alternative mode for the supramolecular construction of biden-tate ligands (Scheme 32). Complex 26 derived from mixing three equivalents of template 24 with two equivalents of monodentate phosphite ligands 23 furnished a rhodium catalyst which displayed good regioselectivity toward... [Pg.173]

Die Blatter von Bidens leucanthus L. enthalten auBerdem das bereits von S5rensen und Sorensen (203) isolierte Phenylheptatriin LVI. [t)ber die Polyine aus Bidens ferulaefolia Dc. und Bidens radiata Thuill. vergleiche auch (146). ]... [Pg.178]

Auch das NMR-Spektrum stimmt mit dieser Annahme gut iiberein. Jensen und Sorensen (146) haben aus Bidens.-Arten eine Schwefel-verbindung isoliert, der sie auf Grand der spektralen Daten und der chemischen Reaktionen die Straktur CCCXVII zuordnen ... [Pg.220]

Acetylene Compounds. XXIX. Preliminary Investigations in the Genus Bidens I. Bidens radiata Thuill and Bidens ferulaefolia (Jacq.) DC. Acta Chem. Scand. 15, 1885 (1961). [Pg.270]

An example of Asteraceae reported to inhibit COX is Cichorium intybus L., or chicory (17). In Asia, Chrysanthemum sinense Sab. (Chrysanthemum morifolium Ramat) and Bidens bipinnata L. are used as anti-inflammatories on account of their likely ability to inhibit COX. [Pg.34]

FIGURE 5. Common configurations of diorganotin compounds with bidenate ligand (a) mononuclear and (b) SnOSnO four-membered ring dimer... [Pg.127]

See other pages where Bidens is mentioned: [Pg.869]    [Pg.730]    [Pg.576]    [Pg.236]    [Pg.52]    [Pg.56]    [Pg.26]    [Pg.251]    [Pg.251]    [Pg.251]    [Pg.257]    [Pg.312]    [Pg.312]    [Pg.321]    [Pg.255]    [Pg.48]    [Pg.58]    [Pg.308]    [Pg.173]    [Pg.67]    [Pg.176]    [Pg.177]    [Pg.178]    [Pg.183]    [Pg.265]    [Pg.35]    [Pg.205]    [Pg.52]    [Pg.206]   
See also in sourсe #XX -- [ Pg.18 ]

See also in sourсe #XX -- [ Pg.50 , Pg.55 ]

See also in sourсe #XX -- [ Pg.47 ]

See also in sourсe #XX -- [ Pg.217 ]

See also in sourсe #XX -- [ Pg.22 ]

See also in sourсe #XX -- [ Pg.47 ]



SEARCH



Bidens (Asteraceae)

Bidens andicola

Bidens aurea

Bidens bipinnata

Bidens connatus

Bidens dahlioides

Bidens frondosa

Bidens parviflora

Bidens pilosa

Bidens radiata

Bidens species

Bidens tripartita

From Bidens campyltheca Schult

© 2024 chempedia.info