Methyl-1 -butene

Arrange the following alkenes in order of decreasing stability ] 1 pentene (E) 2 pentene (Z) 2 pentene 2 methyl 2 butene J... [Pg.200]

Except for the biochemical example just cited the stractures of all of the alcohols m Section 5 9 (including those m Problem 5 13) were such that each one could give only a single alkene by p elimination What about ehmmahon m alcohols such as 2 methyl 2 butanol m which dehydration can occur in two different directions to give alkenes that are conshtutional iso mers Here a double bond can be generated between C 1 and C 2 or between C 2 and C 3 Both processes occur but not nearly to the same extent Under the usual reachon con dihons 2 methyl 2 butene is the major product and 2 methyl 1 butene the minor one... [Pg.204]

Ethanol 1 1 Dimethylpropyl cation Ethyloxonium ion 2 Methyl 2 butene... [Pg.218]

Arrange the compounds 2 methyl 1 butene 2 methyl 2 butene i and 3 methyl 1 butene m order of decreasing reactivity toward bromine J... [Pg.258]

As a method for the preparation of alkenes a weakness in the acid catalyzed dehydration of alcohols IS that the initially formed alkene (or mixture of alkenes) sometimes isomenzes under the conditions of its formation Write a stepwise mechanism showing how 2 methyl 1 butene might isomenze to 2 methyl 2 butene in the presence of sulfuric acid... [Pg.278]

Methyl 1 butene 2 Methyl 2 butene 3 Methyl 1 butene... [Pg.1207]

Methyl 2 butene (most stable) > ( ) 2 pentene > (Z) 2 pentene > 1 pentene (least stable)... [Pg.1208]

Methyl 2 butene (most reactive) > 2 methyl 1 butene > 3 methyl 1 butene (least reactive)... [Pg.1211]

Dibromo 3 methyl 1 butene 3 4 dibromo 2 methyl 1 butene and 1 4 dibromo 2 methyl 2 butene... [Pg.1217]

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