Elimination reactions summary table

MMC surfaces. Some examples of properties that can be influenced are listed in Table 14.7. A number of these approaches require particles of a stoichiometric nature. The properties of these particles can degrade or change if they undergo chemical reaction with the matrix. The short thermal cycle and relatively low temperature during FSP can help to avoid or eliminate reaction products. Table 14.8 provides a summary of various efforts to date (Ref 124-133). The initial results are very encouraging and clearly demonstrate the viability of FSP. 

Table 11.3 Summary of the Reactivity of Alkyl Halides in Elimination Reactions ...

Table 10.5 Summary of the Products Expected in Substitution and Elimination Reactions...

Table 4.7 shows a summary of atom-plus-molecule recombination reactions whose kinetics have been studied in discharge-flow systems the list is not exhaustive only selected data are tabulated. Since these recombination reactions are first-order in [A], only relative concentrations need be measured in order to obtain values for the rate constants. This fact, and the elimination of concurrent atom recombination processes by use of the fixed observation point method, account for the relatively large number of detailed rate studies in the literature. The superficially simple atom + O2 reactions are, for various reasons, more complex than the atom -)- NO reactions. The three reactions H -H NO -f M, O -j- NO -1- M and Cl -1- NO + M possess the following simple mechanism in the 1 torr total pressure region... 

Even without mechanistic information, one can begin to rationalize and, perhaps more importantly, predict various catalytic organopalladium reactions in consultation with Table 3 and Scheme 3. For example, the following four reactions shown in Scheme 5 are representative of the four most important types of Pd-catalyzed C—C bond formation processes discussed in detail in Parts III-VI. It is useful to note that only four patterns in Table 3, that is, (i) carbopalladation, (ii) reductive elimination, (iii) migratory insertion, and (iv) nucleophilic (or electrophilic) attack on ligands, can achieve C—C bond formation. This summary can also be appropriately modified for the formation of other types of bonds, such as C—H, C— M, C— X, and X— X bonds, where M is a metal and X is a heteroatom. 

Several examples of such processes have been noted in Section III and include transhalogenation to the very stable a-metallated compounds 678 or 679, ring opening, and stepwise elimination to nonaryne intermediates which can rearrange or attack the aryne traps which are present. The lower resonance energy of five-membered heterocycles compared to benzenoid compounds makes them much more susceptible to addition reactions, and hence both cine-substitution and Diels-Alder products have been shown to sometimes arise by addition-elimination and not elimination-addition mechanisms. A summary of all the demonstrated nonaryne reactions of five-membered hetaryne precursors discussed in Section III is collected in Table 8. 

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