Electrophilic Aromatic Substitution: Introduction
A key reaction of aromatic compounds is electrophilic aromatic substitution, where a C-H bond is broken and a new C-E bond (E being an electrophilic
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More On 1,2 and 1,4 Additions To Dienes
In the last post we covered 1,2 and 1,4 additions to dienes, specifically the addition of strong acid (e.g. HCl or HBr) to dienes. To
Read moreFree Radical Reactions
With rare exceptions, until now every reaction we’ve discussed (acid-base, substitution, elimination, addition) has involved the formation of bonds between an electron pair donor (Lewis
Read moreIsomers From Free Radical Reactions
Last time we covered a comparatively simple reaction: free-radical chlorination of methane to (CH4) to give chloromethane (CH3Cl) and saw that the reaction proceeds through
Read moreSelectivity In Free Radical Reactions
In the last post we showed some examples of how different isomers might be formed in free-radical halogenation of alkanes. And I left off with
Read moreHalogenation At Tiffany’s
As we discussed in the last post on radicals, bromine radicals are considerably more selective than chlorine radicals in the halogenation of alkanes. For example,
Read moreAlkyne Addition Reactions: The 3-Membered Ring Pathway
Last time we discussed the similarities (and differences) between the carbocation pathway for alkenes and alkynes. In this post, we’ll do the same for the
Read moreBromination of Alkenes: The Mechanism
How does bromination of alkenes work? In the previous post we showed how the mechanism for bromination of alkenes can’t possibly go through a carbocation
Read moreAlkene Addition Pattern #2: The “Three-Membered Ring” Pathway
The “Three-Membered Ring” Pathway In The Mechanisms of Reactions of Alkenes In the last post we walked through a proposal for how the bromination of
Read moreIntroduction to Free Radical Substitution Reactions
The four posts on acid-base, substitution, addition, and elimination covered the 4 main reactions in organic chemistry I. In this second series of posts we go beyond these to introduce a
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