L derivatives

Nitroamlines. Acetyl derivatives (p. 388), Benzoyl derivatives (p. 388). Diamines. Diacet> l derivatives (p. 388), Dibenzoyl derivatives (p. 388). Halogeno-hydrocarbons, a-Naphthyl ethers (from reactive halogen compounds, p. 391, and their Picratcs, p. 394), Nitro-derivatives (p.39i). Carboxylic acid (if oxidisable side chain) (p. 393). 

Sfiim = ) = film thickness wpgj 40p < 20 W L Derived for flat plates, used for tubes if... 

The acetylation of isotripiperideine by means of a ketone in nonpolar media affords a compound which decomposes in acidic media to piperideine and a monoacety.l derivative of the enamine form of tetrahydro-anabasine (195). This monoacetyl derivative is identical with the alkaloid amodendrine (312). A similar acylation with cinnamoylchloride affords the alkaloid orensine (196) (313), the optically active form of which is the natural alkaloid adenocarpine (314). The hydrolysis of alkaloid santiaguine gives a-truxilic acid (314). 

Neutral Pentafluorophenylgold(l) Derivatives with C-Donor Ligands... 

PentqfluorophenYlgold(l) Derivatives 109 Table 3.4 Di and trinuclear pentafluorophenylgold(l) derivatives... 

Acetylenephosphino gold(l) derivatives structure, reactivity and luminescence properties. Journal of the Chemical Society, Dalton Transactions, (18), 3624-3629. 

Bardaji, M., Jones, P.G., Laguna, A., Villacampa, M.D. and Villaverde, N. (2003) Synthesis and structural characterization of luminescent gold(l) derivatives with an... 

Finally, in this account of multiparameter extensions of the Hammett equation, we comment briefly on the origins of the a, scale. This had its beginning around 1956 in the a scale of Roberts and Moreland for substituents X in the reactions of 4-X-bicyclo[2.2.2]octane-l derivatives. However, at that time few values of o were available. A more practical basis for a scale of inductive substituent constants lay in the o values for XCHj groups derived from Taft s analysis of the reactivities of aliphatic esters into polar, steric and resonance effects . For the few o values available it was shown that o for X was related to o for XCHj by the equation o = 0.45 <7. Thereafter the factor 0.45 was used to calculate c, values of X from o values of XCH2 . ... 

Heveker N, Montes M, Germeroth L, et al. Dissociation of the signalling and antiviral properties of SDF-l-derived small peptides. Curr Biol 1998 8(7) 369-376. 

The in vitro trypanocidal and antitumor activities of lfr(cot)L], cot = cyclotetraene, derivatives of dithiocarbamates and xanthates, have been investigated.700 The Ir complexes were characterized by IR spectroscopy, and MO calculations (Hiickel) were performed on the ligands. Similar studies were performed on [Ir(nbr)L], nbr = norbornadiene, L = derivatives of alquil and aryl xanthates 701 and also on [Ir2(cod)2L]X2, where L = 2-hydroxystilbamidine, X = C1, N03, C104, BPh4, and [Ir(cod)L2 ]X, where L = benznidazole, R0-2516, nifurtimox, niridazole. The complex [Ir2(cod)2(2-hydroxystilbami-dine)](BPh4)2 showed the highest activity, as studied by optical microscopy of rats kidneys. 

All of these compounds 151a (Figure 16) have been made from the lithium salt of anionic tridentate phosphino-borate 152 or more conveniently from the thallium(l) derivative 153, available from 152 and T1PF6 in water-methanol media (Scheme 60) <1999CC2379, 1999JA9871, 2001CC2152, 2003IC5074>. 

The three-dimensional probability density that represents the shape of the orbital consists of a pair of distorted ellipsoids, and not two tangent spheres. The shape of the complex orbitals p2p l derives from... 

Acetic acid can be synthesized from methane using an aqueous-phase homogeneous system comprising RhCI as catalyst, CO and 02.17 Side-products included methanol and formic acid, although yields of acetic acid increased upon addition of either Pd/C or iodide ions. The active species is thought to be a CH3-Rh(l) derivative, formed from the C-H activation of methane. The activation of ethane was also achieved, although selectivities were lower, with products including acetic and propionic acids and ethanol (Equation (9)). 

Chiral oxazaborolidines. Enantioselective reduction of ketones with a reagent prepared from BH, and the chiral vic-amino alcohol 1 (12,31) is now known to involve an oxazaborolidine. Thus BH3 and (S)-l, derived from valine, react rapidly in THF to form 2, m.p. 105-110°, which can serve as an efficient catalyst... 

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