Talk:Chichibabin reaction
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Substitution pattern confusion
[edit]"The reaction takes place especially in 2 and 5 position of the Pyridine."
By resonance stability rules, I would expect 2 (==6) and 4 to be the pair with similar reactivity, and different than 3 (==5). Is something special going on here?
"As electrophilic addition is only possible in 3 and 5 position of the pyridine ring the 2 and 5 positions became available for further synthesis by the Chichibabin reaction" is confusing. First part contradicts previously quoted sentence (though matches that 3==5 is a consistent set in my comment). But more, what is this whole sentence actually saying? I can't deciper what does happen (normally), what happens when that does not happen, or what prevents the normal from happening. DMacks (talk) 18:50, 30 January 2008 (UTC)
Right! I reworded it and tried to be more precise.--Stone (talk) 21:24, 30 January 2008 (UTC)
I rephrased the sentence once again, because it still looked very confusing to me. I also added a reaction mechanism image from the German article. However it presumably contains a mistake -- the reaction temperature cannot be 100-200 degrees C (unless you apply pressure), as the reaction takes place in liquid ammonia. 217.230.185.68 (talk) 22:02, 5 March 2008 (UTC)