A Guidebook to Mechanism in Organic Chemistry
Structure, Reactivity and Mechanism 2 3 Bond Order 1 -20 but it will be seen that the relationship is not a linear one and that ...
Bonding in Carbon Compounds In other words, substitution can take place with overall retention of aromaticity, addition cannot ( ...
Structure, Reactivity and Mechanism 0 often being indicated by curved arrows (e.g. (IV) ->-(XII) or (XIII)), the tail of the ...
The Breaking and Forming of Bonds H A H H the p atomic orbitals on C 2 and C 3 are no longer parallel, cannot . therefore overla ...
r Structure, Reactivity and Mechanism » CHA=CH—CH 2 —OH " ^ H 9 X^ © -H.O /^~\ €> ® CH 2 =CH—CH 2 —OH -* [CH 2 ±=CHJ-CH 2 «-» ...
Factors affecting Electron-availability in Bonds FACTORS AFFECTING ELECTRON-AVAILABILITY IN BONDS AND AT INDIVIDUAL ATOMS In the ...
Structure, Reactivity and Mechanism major exception being alkyl groups which are electron-donating.* Though the effect is quanti ...
Factors affecting Electron-availability in Bonds Delocalisation takes place (XX), so that an electron-deficient atom results at ...
Structure, Reactivity and Mechanism CHoO-H CH,Oe ^ H®+! (XXII) In other words, the phenoxide ion (XXI) is stabilised with respec ...
Factors affecting Electron-availability in Bonds Thus the nitro group in nitrobenzene lowers the density of nega tive charge ov ...
Structure, Reactivity and Mechanism electrons that may result either on the close approach of a reagent or, more especially, in ...
Factors affecting Electron-availability in Bonds H—C-r-H H—C H® (XXV) This effect has been called hypercmjugation and has been u ...
Structure, Reactivity and Mechanism compared with isomeric compounds in which it is, i.e. (XXIX) in which there are nine a-hydro ...
^ Steric Effects The 2,6-dimethyl derivative (XXXII) does not couple under these conditions, however, despite the fact that the ...
Structure, Reactivity and Mechanism That this difference is not due to differing electron availability at the nitrogen atom in t ...
Classification of Reagents etc. (XXXVII) will tend to be most readily attacked by positively charged ions such as PbN 2 e,^he di ...
r Structure, Reactivity and Mechanism ^ reagent and substrate on their close approach as when bromine adds to ethylene (p. 137). ...
Types of Reaction Nucleophiles * HO®, RO®, RS®, Hal®, HS0 3 e, QCN, R CfeC®, eCH(COjEt), x / ' (XLI) RMgBr, RLi, LiAlH., *f^\jQ® ...
Structure, Reactivity and Mechanism ^ + ®NO, + H® In nucleophilic substitution reactions, it is often an atom other than hydroge ...
Types of Reaction SOS" SCN slow / HCN \ fast CN y OH eCN CN Elimination reactions are, of course, essentially the reversal ...
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