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  2. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.

  3. List of organic reactions - Wikipedia

    en.wikipedia.org/wiki/List_of_organic_reactions

    Cadiot–Chodkiewicz coupling; Cadogan-Sundberg indole synthesis; Camps quinoline synthesis; Cannizzaro reaction; Carbohydrate acetalisation; Carbonyl reduction

  4. Ring expansion and contraction - Wikipedia

    en.wikipedia.org/wiki/Ring_expansion_and_contraction

    Ring opening as a means of ring expansion can also be applied to larger systems to give access to even larger ring syscyclization. The Grob fragmentation can be applied as an example of such an expansion. Like the pinacol type migration the Grob fragmentation relies on an electron donating group to promote the bond migration and encourage the ...

  5. Organic redox reaction - Wikipedia

    en.wikipedia.org/wiki/Organic_redox_reaction

    Organic redox reactions: the Birch reduction. Organic reductions or organic oxidations or organic redox reactions are redox reactions that take place with organic compounds.In organic chemistry oxidations and reductions are different from ordinary redox reactions, because many reactions carry the name but do not actually involve electron transfer. [1]

  6. Organic chemistry - Wikipedia

    en.wikipedia.org/wiki/Organic_chemistry

    Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1]

  7. Dehydrogenation - Wikipedia

    en.wikipedia.org/wiki/Dehydrogenation

    In chemistry, dehydrogenation is a chemical reaction that involves the removal of hydrogen, usually from an organic molecule. It is the reverse of hydrogenation. Dehydrogenation is important, both as a useful reaction and a serious problem.

  8. Substitution reaction - Wikipedia

    en.wikipedia.org/wiki/Substitution_reaction

    Substitution reactions in organic chemistry are classified either as electrophilic or nucleophilic depending upon the reagent involved, whether a reactive intermediate involved in the reaction is a carbocation, a carbanion or a free radical, and whether the substrate is aliphatic or aromatic. Detailed understanding of a reaction type helps to ...

  9. Talk:List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/Talk:List_of_unsolved...

    The 'organic chemistry' problems might be to do with carbon-containing molecules, but many of them will be studied and perhaps eventually solved by people who are not organic chemists. Perhaps it is just me, but I would not call several of these unsolved problems in organic chemistry, which is what I came here looking for. Organic chemistry is ...

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