Reaction where 2 substituents are removed from a molecule in a 1 or 2 step mechanism
An elimination reaction is a type of organic reaction in which two substituents are removed from a molecule in either a one- or two-step mechanism.[2] The one-step mechanism is known as the E2 reaction, and the two-step mechanism is known as the E1 reaction. The numbers refer not to the number of steps in the mechanism, but rather to the kinetics of the reaction: E2 is bimolecular (second-order) while E1 is unimolecular (first-order). In cases where the molecule is able to stabilize an anion but possesses a poor leaving group, a third type of reaction, E1CB, exists. Finally, the pyrolysis of xanthate and acetate esters proceed through an "internal" elimination mechanism, the Ei mechanism.
^Coleman, G. H.; Johnstone, H. F. (1925). "Cyclohexene". Organic Syntheses. 5: 33. doi:10.15227/orgsyn.005.0033.
^March, Jerry (1985), Advanced Organic Chemistry: Reactions, Mechanisms, and Structure, 3rd edition, New York: Wiley, ISBN 9780471854722, OCLC 642506595
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they too have double-bond character. An addition reaction is the reverse of an eliminationreaction. For instance, the hydration of an alkene to an alcohol...
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methanethiol. The Chugaev elimination is similar in mechanism to other thermal eliminationreactions such as the Cope elimination and ester pyrolysis. Xanthates...
a dehydration reaction is a chemical reaction that involves the loss of water from the reacting molecule or ion. Dehydration reactions are common processes...
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alkene by an Ei elimination mechanism with expulsion of a selenol in a fashion similar to that of the Cope elimination. This reaction takes part in the...
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and obtain an almost instantaneous reaction. The aromatic moiety itself does not participate in eliminationreaction, but it does increase the rigidity...