King case

Several of these cocaine substitutes contain asymmetric carbon atoms, and King has sho-wn that in the case of benzamine (III) there is no difference in the anaesthetic action of the d- and Z- forms, but that the Z-fonn is twice as toxic as the [Pg.111]

In a special circumstance the rate equation for parallel reactions may be misleading.If two parallel reactions are catalyzed by a common catalyst, and if a significant fraction of the catalyst is tied up in the form of intermediates, then the two reactions are not independent, and the rate equation will not give the transition state composition. King has analyzed this case in terms of enzyme-catalyzed reactions. 

The reaction mechanism has been discussed by several earlier authors more recently, Elderfleld and King proposed that the onol form (79) of the ketone underwent acylation, whereas Balaban and Nenitzescu assumed that the )3,y-unsaturated isomer (80) of the ketone was acylated. Support for the latter view is given by the high concentration of the j8,y-unsaturated isomer (80) in equilibrium with the a,j8-isomer (78). In the case of mesityl... 

The first-order and second-order kinetics of desorption are by far the most common and practically considered cases. Less than first-order desorption kinetics indicates multilayer adsorption or transport limited desorption (101). An actual significance of the third-order kinetics in desorption has been found recently by Goymour and King (102, 103). 

The methanol adduct may arise by photoprotonation of the double bond. A similar photoaddition of methanol has been reported on photolysis of 4973. In a closely related study, King and coworkers74 have shown that photolysis in methanol of the monocyclic unsaturated sulfone (50) gives the methanol adduct (51) and the acyclic sulfonate, CH2= C(Ph)CH—CHCH2S020Me, in 43 and 30% yield, respectively. Formation of the sulfonate ester in this case strongly supports the intermediacy of the sulfene (52) produced on cycloreversion. 

E.29 The king of Zirconia is naturally fond of the element zirconium and has established an independent definition of the mole based on zirconium. The mass of one zirconium-90 atom is 1.4929 X 10 22 g. If zirconium were the standard used for molar mass (instead of carbon-12), 1 mol would be defined as the amount of substance that contains the same number of entities as there are atoms in exactly 90 g of zirconium-90. In that case, what would be (a) the molar mass of carbon-12 (b) the (average) molar mass of gold ... 

DePuy, C.H. King, R.W. Chem. Rev., 1960, 60, 431, have tables showing the product distribution for many cases. 

Chemical variety in the acylsugars known from the family is based upon the capacity of glucose to accommodate up to five acylating acids, while sucrose can accommodate up to six. Detailed chemical information on these compounds from various members of the family can be found in papers by King et al. (1988,1990) and Matsuzaki et al. (1989). In the case of compounds from L. pennellii, the acylating acids... 

The reactivity of chromium(V) and chromium(IV) species is uncertain since there are no reliable thermodynamic data, and not much can be said at present about the structure of these species. With respect to the latter some hints can be obtained from the fact that the changeover from chromium(V) to chromium(IV) or vice versa in all cases was found to be rate determining, which seems to correlate well with the conclusion of Tong and King d that Cr(VI) and Cr(V) have coordination number four, whereas Cr(IV) and Cr(III) have six. 

This regime is characterized by the presence of two continuous fluid phases and an interface which can easily be described. The term separated flows is frequently employed to describe these situations in both horizontal and vertical systems. Some flow patterns in Regime I are advantageous for transferring heat between the tube wall and the fluid mixture or for carrying out two-phase reactions. The special case of laminar-laminar flow is included in this regime, and two studies seem to be of interest, Byers and King (B7) and Bentwich and Sideman (B3). 

For obtaining the value of the rate constant, it is desirable to determine the value of the diffusion coefficient of the metal ions or of one of the reactants (in the case of a redox couple) in the supporting electrolyte at an appropriate temperature. The value of the diffusion coefficient is experimentally determined using a McBain-Dowson cell and the King-Cathard equation, as described earlier.40... 

Flammability means the ease with which a material bums in air (King, 1990). It applies to gases, liquids and solids. Flammability is very important to know for instance in the cases of leaks. The liquid which has a flash point below the processing or storage temperature can give rise to a flammable mixture and is generally considered hazardous. 

King et a/.54,138,155 applied the steady state approximation to both systems. In the case of Fe(CO)5, as shown in Scheme 7b, both C02 and H2 production rates should be the same, and so 2[Fe(CO)5][OH-] = fc4[H2Fe(CO)4]. Reactant concentrations are far from equilibrium, and the reactions are assumed to be driven to the right. 

Constructs of Sup35p (Sup35pN and Sup35pNM) have been investigated by CD spectroscopy and in both cases an increase of /(-structure on filament formation was reported (Glover et al., 1997 King et al., 1997). No attempt was made to quantitate secondary structure. 

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