Friedel-Crafts alkylation reactions fail when used with compounds such as nitrobenzene and other strong deactivating systems.
Is it true that Friedel-Crafts alkylation reactions fail when used with compounds such as nitrobenzene and other strong deactivating systems?
Yes. Friedel-Crafts alkylation reactions generally fail or perform poorly when attempted on strongly deactivated aromatic systems like nitrobenzene due to severe deactivation toward electrophilic attack.
Verdict: SUPPORTED · 3 sources for, 0 against · Last checked
The claim states that Friedel-Crafts alkylations fail with strongly deactivating systems like nitrobenzene. Standard organic chemistry principles and references such as [2], [6], and [9] confirm that strong deactivating groups prevent classical Friedel-Crafts reactions from proceeding unless special activating solvents or conditions are used.
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Price, C. C. (2011). The Alkylation of Aromatic Compounds by the Friedel‐Crafts Method. doi.org. https://doi.org/10.1002/0471264180.or003.01
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MAJ, D., CS, B., TK, M., JJ, R., AJP, W., C, C., & JA, B. (2026). Iron-Catalyzed Friedel-Crafts Reactions of Unactivated 3-Aryl-Oxetanols Exploiting HFIP Stabilization of Carbocations.. doi.org. https://doi.org/10.1021/acs.joc.6c00762
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Noël, F. (n.d.). Hexafluoroisopropanol-assisted Friedel-Crafts alkylation of deactivated alcohols. doi.org. https://doi.org/10.70675/03c61dcdza4afz455fz8348za09b594492c5
What does the evidence say?
The claim states that Friedel-Crafts alkylations fail with strongly deactivating systems like nitrobenzene. Standard organic chemistry principles and references such as [2], [6], and [9] confirm that strong deactivating groups prevent classical Friedel-Crafts reactions from proceeding unless special activating solvents or conditions are used.
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