A Guidebook to Mechanism in Organic Chemistry
Carbanions and Their Reactions H H </ O O -*• I II -> II Me—C C=0 Me—C C==0 Me—C—CH,+ CO, (XL1X) Confirmation of this mode ...
RADICALS AND THEIR REACTIONS MOST of the^ajctions that have been considered to date have in volved the participation, however t ...
Radicals and Their Reactions * The chief characteristics of radical reactions are their rapidity, their initiation by radicals t ...
Long-Lived Radicals A number of contributing structures of this kind can be written, but the stabilisation thereby promoted is n ...
Radicals and Their Reactions * chloride NO, NO, (ID for this is very stable (due to delocalisation of the unpaired electron) and ...
Methods of Formation CH,===CH^-CH, -M- CH,—CH==CH, (i) Methods of formation There are numerous methods by which short-lived radi ...
Radicals and Their Reactions but also by disproportionation: CH,—CHj • + CHj— CH, • -»• CH,—CH,+CHr=CH, The use of lead tetraeth ...
Methods of Formation The decomposition of benzoyl peroxide is discussed in more detail below (p. 240). (c) Oxidation/reduction b ...
Radicals and Their Reactions which has already been encountered in the reaction of aromatic ketones with sodium in the absence o ...
Stereochemistry adding (a) compounds that readily form radicals, e.g. organic perox ides, and (b) compounds known to react read ...
Radicals and Their Reactions For radicals which do not have their configuration thrust upon them in this way, or which are not n ...
Thermal Fission of Benzoyl Peroxide Even at room temperature, and particularly as the temperature is raised, solutions of the pe ...
0 Radicals and Their Reactions * It will be seen that the initiating step, the photochemical fission of a molecule of chlorine, ...
Addition of Halogens i.e. each quantum of energy absorbed did, in fact, lead to the initia tion of two reaction chains. The add ...
Radicals and Their Reactions • A mixture of several of the "eight possible geometrical isomers of hexachlorocyclohexane is obtai ...
Addition of Hydrogen Halide Ra * (ex peroxides)+HBr ->• Ra—H + • Br I Me—CH=CH,+ 'Br -* Me—CH—CH,—Br | JHB, (XVIII> •Br + ...
Radicals and Their Reactions and its subsequent conversion to (XVII), i.e. the steps propagating the chain-reaction, are both ex ...
Vinyl Polymerisation it has been found to proceed very largely trans owing to the much less free rotation about the C—C bond at ...
Radicals and Their Reactions been largely used up in setting the chains going in the first place. It should be emphasised that s ...
Halogenation The reaction may also be initiated in the dark by heating but considerably elevated temperatures are required to ef ...
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