Die Chlorformylierung von α‐Pyrrolonen

Schulte, K. E.; Reisch, J.; Stoess, U.

doi:10.1002/ange.19650772417

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Pocl 3 Naoh1

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2004

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“…Under the influence of the Vilsmeier complex the N-unsubstituted 3,4-dimethylpyrrol-2-one 20 gives a good yield of the immonium salt 20a, the alkaline hydrolysis of which gives 2-formyl-5-chloropyrrole 21 [59][60][61]. N-Substituted pyrrol-2-ones dimerize with N-R-pyrrolid-2-ones during the action of protic and aprotic acids with yields of up to 79% [63].…”

Section: Pocl 3 Naohmentioning

confidence: 98%

Reactivity of pyrrol-2-ones. (review)

Egorova

Timofeeva

2004

Chem Heterocycl Compd

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Published data on the chemical transformations of pyrrol-2-ones are reviewed and analyzed. The extensive synthetic possibilities of compounds containing a pyrrolone ring in the synthesis of various heterocyclic compounds with complex structures are demonstrated. The reactions are arranged according to the reaction centers of the pyrrol-2-ones: The methylene unit, the C=C double bond, the electron-deficient carbon atom of the carbonyl group.

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